test: migrate stage1 compile error tests to updated test manifest

675 files changed, 2170 insertions, 649 deletions

diff --git a/test/compile_errors/stage1/exe/main_missing_name.zig b/test/compile_errors/stage1/exe/main_missing_name.zig
index c029665367..1a53e43cfb 100644
--- a/test/compile_errors/stage1/exe/main_missing_name.zig
+++ b/test/compile_errors/stage1/exe/main_missing_name.zig
@@ -1,5 +1,8 @@
 pub fn (main) void {}
 
-// main missing name
+// error
+// backend=stage1
+// target=native
+// output_mode=Exe
 //
 // tmp.zig:1:5: error: missing function name
diff --git a/test/compile_errors/stage1/exe/missing_main_fn_in_executable.zig b/test/compile_errors/stage1/exe/missing_main_fn_in_executable.zig
index eb9ab469fd..65813abac3 100644
--- a/test/compile_errors/stage1/exe/missing_main_fn_in_executable.zig
+++ b/test/compile_errors/stage1/exe/missing_main_fn_in_executable.zig
@@ -1,5 +1,8 @@
 
 
-// missing main fn in executable
+// error
+// backend=stage1
+// target=native
+// output_mode=Exe
 //
 // error: root source file has no member called 'main'
diff --git a/test/compile_errors/stage1/exe/private_main_fn.zig b/test/compile_errors/stage1/exe/private_main_fn.zig
index da617899a5..5a178389e8 100644
--- a/test/compile_errors/stage1/exe/private_main_fn.zig
+++ b/test/compile_errors/stage1/exe/private_main_fn.zig
@@ -1,6 +1,9 @@
 fn main() void {}
 
-// private main fn
+// error
+// backend=stage1
+// target=native
+// output_mode=Exe
 //
 // error: 'main' is private
 // tmp.zig:1:1: note: declared here
diff --git a/test/compile_errors/stage1/obj/C_pointer_pointing_to_non_C_ABI_compatible_type_or_has_align_attr.zig b/test/compile_errors/stage1/obj/C_pointer_pointing_to_non_C_ABI_compatible_type_or_has_align_attr.zig
index 24fd0d1b9f..72c58adbd6 100644
--- a/test/compile_errors/stage1/obj/C_pointer_pointing_to_non_C_ABI_compatible_type_or_has_align_attr.zig
+++ b/test/compile_errors/stage1/obj/C_pointer_pointing_to_non_C_ABI_compatible_type_or_has_align_attr.zig
@@ -5,6 +5,8 @@ export fn a() void {
     _ = t;
 }
 
-// C pointer pointing to non C ABI compatible type or has align attr
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:19: error: C pointers cannot point to non-C-ABI-compatible type 'Foo'
diff --git a/test/compile_errors/stage1/obj/C_pointer_to_anyopaque.zig b/test/compile_errors/stage1/obj/C_pointer_to_anyopaque.zig
index 3012996145..36c9789d20 100644
--- a/test/compile_errors/stage1/obj/C_pointer_to_anyopaque.zig
+++ b/test/compile_errors/stage1/obj/C_pointer_to_anyopaque.zig
@@ -4,6 +4,8 @@ export fn a() void {
     _ = y;
 }
 
-// C pointer to anyopaque
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:16: error: C pointers cannot point to opaque types
diff --git a/test/compile_errors/stage1/obj/Frame_of_generic_function.zig b/test/compile_errors/stage1/obj/Frame_of_generic_function.zig
index b9b2280dd7..d90e53eb46 100644
--- a/test/compile_errors/stage1/obj/Frame_of_generic_function.zig
+++ b/test/compile_errors/stage1/obj/Frame_of_generic_function.zig
@@ -7,6 +7,8 @@ fn func(comptime T: type) void {
     _ = x;
 }
 
-// @Frame() of generic function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:16: error: @Frame() of generic function
diff --git a/test/compile_errors/stage1/obj/Issue_5586_Make_unary_minus_for_unsigned_types_a_compile_error.zig b/test/compile_errors/stage1/obj/Issue_5586_Make_unary_minus_for_unsigned_types_a_compile_error.zig
index d01e68e4eb..e1d498e65f 100644
--- a/test/compile_errors/stage1/obj/Issue_5586_Make_unary_minus_for_unsigned_types_a_compile_error.zig
+++ b/test/compile_errors/stage1/obj/Issue_5586_Make_unary_minus_for_unsigned_types_a_compile_error.zig
@@ -8,7 +8,9 @@ export fn f2(x: V(4, u32)) V(4, u32) {
     return -y;
 }
 
-// Issue #5586: Make unary minus for unsigned types a compile error
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:12: error: negation of type 'u32'
 // tmp.zig:8:12: error: negation of type 'u32'
diff --git a/test/compile_errors/stage1/obj/Issue_6823_dont_allow_._to_be_followed_by_.zig b/test/compile_errors/stage1/obj/Issue_6823_dont_allow_._to_be_followed_by_.zig
index c21df43362..1aa0996ba4 100644
--- a/test/compile_errors/stage1/obj/Issue_6823_dont_allow_._to_be_followed_by_.zig
+++ b/test/compile_errors/stage1/obj/Issue_6823_dont_allow_._to_be_followed_by_.zig
@@ -3,6 +3,8 @@ fn foo() void {
     _ = sequence;
 }
 
-// Issue #6823: don't allow .* to be followed by **
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:28: error: '.*' cannot be followed by '*'. Are you missing a space?
diff --git a/test/compile_errors/stage1/obj/Issue_9165_windows_tcp_server_compilation_error.zig b/test/compile_errors/stage1/obj/Issue_9165_windows_tcp_server_compilation_error.zig
index e3b9d4b009..3d150693f5 100644
--- a/test/compile_errors/stage1/obj/Issue_9165_windows_tcp_server_compilation_error.zig
+++ b/test/compile_errors/stage1/obj/Issue_9165_windows_tcp_server_compilation_error.zig
@@ -9,6 +9,8 @@ pub fn main() !void {
     }
 }
 
-// Issue #9165: windows tcp server compilation error
+// error
+// backend=stage1
+// target=native
 //
 // error: Unsupported OS
diff --git a/test/compile_errors/stage1/obj/access_non-existent_member_of_error_set.zig b/test/compile_errors/stage1/obj/access_non-existent_member_of_error_set.zig
index 42a54b08cd..caddf36a84 100644
--- a/test/compile_errors/stage1/obj/access_non-existent_member_of_error_set.zig
+++ b/test/compile_errors/stage1/obj/access_non-existent_member_of_error_set.zig
@@ -4,6 +4,8 @@ comptime {
     _ = z;
 }
 
-// access non-existent member of error set
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:18: error: no error named 'Bar' in 'Foo'
diff --git a/test/compile_errors/stage1/obj/accessing_runtime_parameter_from_outer_function.zig b/test/compile_errors/stage1/obj/accessing_runtime_parameter_from_outer_function.zig
index 68b23c6a43..73a9e94d44 100644
--- a/test/compile_errors/stage1/obj/accessing_runtime_parameter_from_outer_function.zig
+++ b/test/compile_errors/stage1/obj/accessing_runtime_parameter_from_outer_function.zig
@@ -12,7 +12,9 @@ export fn entry() void {
     _ = x;
 }
 
-// accessing runtime parameter from outer function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:24: error: 'y' not accessible from inner function
 // tmp.zig:3:28: note: crossed function definition here
diff --git a/test/compile_errors/stage1/obj/add_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/add_assign_on_undefined_value.zig
index 0076cf1bab..38e4fef81b 100644
--- a/test/compile_errors/stage1/obj/add_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/add_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a += a;
 }
 
-// add assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/add_on_undefined_value.zig b/test/compile_errors/stage1/obj/add_on_undefined_value.zig
index 5f64c6999b..4a66f9c102 100644
--- a/test/compile_errors/stage1/obj/add_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/add_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a + a;
 }
 
-// add on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/add_overflow_in_function_evaluation.zig b/test/compile_errors/stage1/obj/add_overflow_in_function_evaluation.zig
index b01e005a04..d4fa312482 100644
--- a/test/compile_errors/stage1/obj/add_overflow_in_function_evaluation.zig
+++ b/test/compile_errors/stage1/obj/add_overflow_in_function_evaluation.zig
@@ -5,6 +5,8 @@ fn add(a: u16, b: u16) u16 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(y)); }
 
-// add overflow in function evaluation
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:14: error: operation caused overflow
diff --git a/test/compile_errors/stage1/obj/add_wrap_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/add_wrap_assign_on_undefined_value.zig
index 37dbf9106f..5f9a4c61fc 100644
--- a/test/compile_errors/stage1/obj/add_wrap_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/add_wrap_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a +%= a;
 }
 
-// add wrap assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/add_wrap_on_undefined_value.zig b/test/compile_errors/stage1/obj/add_wrap_on_undefined_value.zig
index 3ba9bd11c6..582b8ec1cf 100644
--- a/test/compile_errors/stage1/obj/add_wrap_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/add_wrap_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a +% a;
 }
 
-// add wrap on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/addition_with_non_numbers.zig b/test/compile_errors/stage1/obj/addition_with_non_numbers.zig
index 296b9f4103..8f343926f2 100644
--- a/test/compile_errors/stage1/obj/addition_with_non_numbers.zig
+++ b/test/compile_errors/stage1/obj/addition_with_non_numbers.zig
@@ -5,6 +5,8 @@ const x = Foo {.field = 1} + Foo {.field = 2};
 
 export fn entry() usize { return @sizeOf(@TypeOf(x)); }
 
-// addition with non numbers
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:28: error: invalid operands to binary expression: 'Foo' and 'Foo'
diff --git a/test/compile_errors/stage1/obj/address_of_number_literal.zig b/test/compile_errors/stage1/obj/address_of_number_literal.zig
index ee61f2180f..76d321929d 100644
--- a/test/compile_errors/stage1/obj/address_of_number_literal.zig
+++ b/test/compile_errors/stage1/obj/address_of_number_literal.zig
@@ -3,6 +3,8 @@ const y = &x;
 fn foo() *const i32 { return y; }
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// address of number literal
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:30: error: expected type '*const i32', found '*const comptime_int'
diff --git a/test/compile_errors/stage1/obj/alignCast_expects_pointer_or_slice.zig b/test/compile_errors/stage1/obj/alignCast_expects_pointer_or_slice.zig
index 91b269cef4..9f76d3ca4f 100644
--- a/test/compile_errors/stage1/obj/alignCast_expects_pointer_or_slice.zig
+++ b/test/compile_errors/stage1/obj/alignCast_expects_pointer_or_slice.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     @alignCast(4, @as(u32, 3));
 }
 
-// @alignCast expects pointer or slice
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:19: error: expected pointer or slice, found 'u32'
diff --git a/test/compile_errors/stage1/obj/align_n_expr_function_pointers_is_a_compile_error.zig b/test/compile_errors/stage1/obj/align_n_expr_function_pointers_is_a_compile_error.zig
new file mode 100644
index 0000000000..bd41b3e657
--- /dev/null
+++ b/test/compile_errors/stage1/obj/align_n_expr_function_pointers_is_a_compile_error.zig
@@ -0,0 +1,9 @@
+export fn foo() align(1) void {
+    return;
+}
+
+// error
+// backend=stage1
+// target=wasm32-freestanding-none
+//
+// tmp.zig:1:23: error: align(N) expr is not allowed on function prototypes in wasm32/wasm64
diff --git a/test/compile_errors/stage1/obj/aligned_variable_of_zero-bit_type.zig b/test/compile_errors/stage1/obj/aligned_variable_of_zero-bit_type.zig
index 90e690056d..f09f92aca7 100644
--- a/test/compile_errors/stage1/obj/aligned_variable_of_zero-bit_type.zig
+++ b/test/compile_errors/stage1/obj/aligned_variable_of_zero-bit_type.zig
@@ -3,6 +3,8 @@ export fn f() void {
     _ = s;
 }
 
-// aligned variable of zero-bit type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: variable 's' of zero-bit type 'struct:2:12' has no in-memory representation, it cannot be aligned
diff --git a/test/compile_errors/stage1/obj/alignment_of_enum_field_specified.zig b/test/compile_errors/stage1/obj/alignment_of_enum_field_specified.zig
index cf5cdfd213..9b6f1e452d 100644
--- a/test/compile_errors/stage1/obj/alignment_of_enum_field_specified.zig
+++ b/test/compile_errors/stage1/obj/alignment_of_enum_field_specified.zig
@@ -7,6 +7,8 @@ export fn entry1() void {
     _ = x;
 }
 
-// alignment of enum field specified
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:7: error: expected ',' after field
diff --git a/test/compile_errors/stage1/obj/ambiguous_decl_reference.zig b/test/compile_errors/stage1/obj/ambiguous_decl_reference.zig
index 421c41d2c2..82e6a0a24c 100644
--- a/test/compile_errors/stage1/obj/ambiguous_decl_reference.zig
+++ b/test/compile_errors/stage1/obj/ambiguous_decl_reference.zig
@@ -12,7 +12,9 @@ export fn entry() void {
     bar();
 }
 
-// ambiguous decl reference
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:13: error: ambiguous reference
 // tmp.zig:7:9: note: declared here
diff --git a/test/compile_errors/stage1/obj/and_on_undefined_value.zig b/test/compile_errors/stage1/obj/and_on_undefined_value.zig
index 82363848f3..6071d81062 100644
--- a/test/compile_errors/stage1/obj/and_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/and_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a and a;
 }
 
-// and on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/array_access_of_non_array.zig b/test/compile_errors/stage1/obj/array_access_of_non_array.zig
index e4420debcd..7045f2fdbd 100644
--- a/test/compile_errors/stage1/obj/array_access_of_non_array.zig
+++ b/test/compile_errors/stage1/obj/array_access_of_non_array.zig
@@ -7,7 +7,9 @@ export fn g() void {
     _ = bad[0];
 }
 
-// array access of non array
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:8: error: array access of non-array type 'bool'
 // tmp.zig:7:12: error: array access of non-array type 'bool'
diff --git a/test/compile_errors/stage1/obj/array_access_of_type.zig b/test/compile_errors/stage1/obj/array_access_of_type.zig
index 82708eed6c..c0029f2492 100644
--- a/test/compile_errors/stage1/obj/array_access_of_type.zig
+++ b/test/compile_errors/stage1/obj/array_access_of_type.zig
@@ -3,6 +3,8 @@ export fn foo() void {
     _ = b;
 }
 
-// array access of type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:14: error: array access of non-array type 'type'
diff --git a/test/compile_errors/stage1/obj/array_access_of_undeclared_identifier.zig b/test/compile_errors/stage1/obj/array_access_of_undeclared_identifier.zig
index 193a7bf5de..7d16a0d60e 100644
--- a/test/compile_errors/stage1/obj/array_access_of_undeclared_identifier.zig
+++ b/test/compile_errors/stage1/obj/array_access_of_undeclared_identifier.zig
@@ -2,6 +2,8 @@ export fn f() void {
     i[i] = i[i];
 }
 
-// array access of undeclared identifier
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: use of undeclared identifier 'i'
diff --git a/test/compile_errors/stage1/obj/array_access_with_non_integer_index.zig b/test/compile_errors/stage1/obj/array_access_with_non_integer_index.zig
index 1a3e17d896..de0a58656c 100644
--- a/test/compile_errors/stage1/obj/array_access_with_non_integer_index.zig
+++ b/test/compile_errors/stage1/obj/array_access_with_non_integer_index.zig
@@ -9,7 +9,9 @@ export fn g() void {
     _ = array[bad];
 }
 
-// array access with non integer index
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:11: error: expected type 'usize', found 'bool'
 // tmp.zig:9:15: error: expected type 'usize', found 'bool'
diff --git a/test/compile_errors/stage1/obj/array_concatenation_with_wrong_type.zig b/test/compile_errors/stage1/obj/array_concatenation_with_wrong_type.zig
index 91036e5f25..ccddc7efbd 100644
--- a/test/compile_errors/stage1/obj/array_concatenation_with_wrong_type.zig
+++ b/test/compile_errors/stage1/obj/array_concatenation_with_wrong_type.zig
@@ -4,6 +4,8 @@ const a = derp ++ "foo";
 
 export fn entry() usize { return @sizeOf(@TypeOf(a)); }
 
-// array concatenation with wrong type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:11: error: expected array, found 'usize'
diff --git a/test/compile_errors/stage1/obj/array_in_c_exported_function.zig b/test/compile_errors/stage1/obj/array_in_c_exported_function.zig
index fe03d220b1..5137755474 100644
--- a/test/compile_errors/stage1/obj/array_in_c_exported_function.zig
+++ b/test/compile_errors/stage1/obj/array_in_c_exported_function.zig
@@ -6,7 +6,9 @@ export fn zig_return_array() [10]u8 {
     return "1234567890".*;
 }
 
-// array in c exported function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:24: error: parameter of type '[10]u8' not allowed in function with calling convention 'C'
 // tmp.zig:5:30: error: return type '[10]u8' not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/asm_at_compile_time.zig b/test/compile_errors/stage1/obj/asm_at_compile_time.zig
index e08b500c6e..fcfd5e7da6 100644
--- a/test/compile_errors/stage1/obj/asm_at_compile_time.zig
+++ b/test/compile_errors/stage1/obj/asm_at_compile_time.zig
@@ -10,6 +10,8 @@ fn doSomeAsm() void {
     );
 }
 
-// asm at compile time
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:5: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/assign_inline_fn_to_non-comptime_var.zig b/test/compile_errors/stage1/obj/assign_inline_fn_to_non-comptime_var.zig
index aa7bb91d1b..7714bb7282 100644
--- a/test/compile_errors/stage1/obj/assign_inline_fn_to_non-comptime_var.zig
+++ b/test/compile_errors/stage1/obj/assign_inline_fn_to_non-comptime_var.zig
@@ -4,7 +4,9 @@ export fn entry() void {
 }
 fn b() callconv(.Inline) void { }
 
-// assign inline fn to non-comptime var
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: functions marked inline must be stored in const or comptime var
 // tmp.zig:5:1: note: declared here
diff --git a/test/compile_errors/stage1/obj/assign_null_to_non-optional_pointer.zig b/test/compile_errors/stage1/obj/assign_null_to_non-optional_pointer.zig
index 9c1aaf5031..110d6c2629 100644
--- a/test/compile_errors/stage1/obj/assign_null_to_non-optional_pointer.zig
+++ b/test/compile_errors/stage1/obj/assign_null_to_non-optional_pointer.zig
@@ -2,6 +2,8 @@ const a: *u8 = null;
 
 export fn entry() usize { return @sizeOf(@TypeOf(a)); }
 
-// assign null to non-optional pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:16: error: expected type '*u8', found '@Type(.Null)'
diff --git a/test/compile_errors/stage1/obj/assign_through_constant_pointer.zig b/test/compile_errors/stage1/obj/assign_through_constant_pointer.zig
index 452e3ea617..69ba383843 100644
--- a/test/compile_errors/stage1/obj/assign_through_constant_pointer.zig
+++ b/test/compile_errors/stage1/obj/assign_through_constant_pointer.zig
@@ -3,6 +3,8 @@ export fn f() void {
   cstr[0] = 'W';
 }
 
-// assign through constant pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:13: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/assign_through_constant_slice.zig b/test/compile_errors/stage1/obj/assign_through_constant_slice.zig
index e36991897b..55d2e7e7c7 100644
--- a/test/compile_errors/stage1/obj/assign_through_constant_slice.zig
+++ b/test/compile_errors/stage1/obj/assign_through_constant_slice.zig
@@ -3,6 +3,8 @@ export fn f() void {
   cstr[0] = 'W';
 }
 
-// assign through constant slice
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:13: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/assign_to_constant_field.zig b/test/compile_errors/stage1/obj/assign_to_constant_field.zig
index f371655fb5..610818118a 100644
--- a/test/compile_errors/stage1/obj/assign_to_constant_field.zig
+++ b/test/compile_errors/stage1/obj/assign_to_constant_field.zig
@@ -6,6 +6,8 @@ export fn derp() void {
     f.field = 0;
 }
 
-// assign to constant field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:15: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/assign_to_constant_variable.zig b/test/compile_errors/stage1/obj/assign_to_constant_variable.zig
index 1e8dd6c06f..531f669c1a 100644
--- a/test/compile_errors/stage1/obj/assign_to_constant_variable.zig
+++ b/test/compile_errors/stage1/obj/assign_to_constant_variable.zig
@@ -3,6 +3,8 @@ export fn f() void {
     a = 4;
 }
 
-// assign to constant variable
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/assign_to_invalid_dereference.zig b/test/compile_errors/stage1/obj/assign_to_invalid_dereference.zig
index 6466f7afc8..7fef5db83c 100644
--- a/test/compile_errors/stage1/obj/assign_to_invalid_dereference.zig
+++ b/test/compile_errors/stage1/obj/assign_to_invalid_dereference.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     'a'.* = 1;
 }
 
-// assign to invalid dereference
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:8: error: attempt to dereference non-pointer type 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/assign_too_big_number_to_u16.zig b/test/compile_errors/stage1/obj/assign_too_big_number_to_u16.zig
index 13b5280588..3138ed5faf 100644
--- a/test/compile_errors/stage1/obj/assign_too_big_number_to_u16.zig
+++ b/test/compile_errors/stage1/obj/assign_too_big_number_to_u16.zig
@@ -3,6 +3,8 @@ export fn foo() void {
     _ = vga_mem;
 }
 
-// assign too big number to u16
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:24: error: integer value 753664 cannot be coerced to type 'u16'
diff --git a/test/compile_errors/stage1/obj/assign_unreachable.zig b/test/compile_errors/stage1/obj/assign_unreachable.zig
index 78e2305abc..f87adcd994 100644
--- a/test/compile_errors/stage1/obj/assign_unreachable.zig
+++ b/test/compile_errors/stage1/obj/assign_unreachable.zig
@@ -2,7 +2,9 @@ export fn f() void {
     const a = return;
 }
 
-// assign unreachable
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: unreachable code
 // tmp.zig:2:15: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/assigning_to_struct_or_union_fields_that_are_not_optionals_with_a_function_that_returns_an_optional.zig b/test/compile_errors/stage1/obj/assigning_to_struct_or_union_fields_that_are_not_optionals_with_a_function_that_returns_an_optional.zig
index f93650821b..8285991c05 100644
--- a/test/compile_errors/stage1/obj/assigning_to_struct_or_union_fields_that_are_not_optionals_with_a_function_that_returns_an_optional.zig
+++ b/test/compile_errors/stage1/obj/assigning_to_struct_or_union_fields_that_are_not_optionals_with_a_function_that_returns_an_optional.zig
@@ -14,6 +14,8 @@ export fn entry() void {
     _ = s;
 }
 
-// assigning to struct or union fields that are not optionals with a function that returns an optional
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:11:27: error: cannot convert optional to payload type. consider using `.?`, `orelse`, or `if`. expected type 'u8', found '?u8'
diff --git a/test/compile_errors/stage1/obj/async_function_depends_on_its_own_frame.zig b/test/compile_errors/stage1/obj/async_function_depends_on_its_own_frame.zig
index 0d1cd7f77e..4dde5860ba 100644
--- a/test/compile_errors/stage1/obj/async_function_depends_on_its_own_frame.zig
+++ b/test/compile_errors/stage1/obj/async_function_depends_on_its_own_frame.zig
@@ -6,6 +6,8 @@ fn amain() callconv(.Async) void {
     _ = x;
 }
 
-// async function depends on its own frame
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:1: error: cannot resolve '@Frame(amain)': function not fully analyzed yet
diff --git a/test/compile_errors/stage1/obj/async_function_indirectly_depends_on_its_own_frame.zig b/test/compile_errors/stage1/obj/async_function_indirectly_depends_on_its_own_frame.zig
index 809409f524..4dac0d4fa3 100644
--- a/test/compile_errors/stage1/obj/async_function_indirectly_depends_on_its_own_frame.zig
+++ b/test/compile_errors/stage1/obj/async_function_indirectly_depends_on_its_own_frame.zig
@@ -9,7 +9,9 @@ fn other() void {
     _ = x;
 }
 
-// async function indirectly depends on its own frame
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:1: error: unable to determine async function frame of 'amain'
 // tmp.zig:5:10: note: analysis of function 'other' depends on the frame
diff --git a/test/compile_errors/stage1/obj/atomic_orderings_of_atomicStore_Acquire_or_AcqRel.zig b/test/compile_errors/stage1/obj/atomic_orderings_of_atomicStore_Acquire_or_AcqRel.zig
index 7d97c2813e..dfc7ff5036 100644
--- a/test/compile_errors/stage1/obj/atomic_orderings_of_atomicStore_Acquire_or_AcqRel.zig
+++ b/test/compile_errors/stage1/obj/atomic_orderings_of_atomicStore_Acquire_or_AcqRel.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     @atomicStore(u32, &x, 1, .Acquire);
 }
 
-// atomic orderings of atomicStore Acquire or AcqRel
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:30: error: @atomicStore atomic ordering must not be Acquire or AcqRel
diff --git a/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-failure_stricter_than_success.zig b/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-failure_stricter_than_success.zig
index d6d9ab478b..929950e754 100644
--- a/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-failure_stricter_than_success.zig
+++ b/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-failure_stricter_than_success.zig
@@ -4,6 +4,8 @@ export fn f() void {
     while (!@cmpxchgWeak(i32, &x, 1234, 5678, AtomicOrder.Monotonic, AtomicOrder.SeqCst)) {}
 }
 
-// atomic orderings of cmpxchg - failure stricter than success
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:81: error: failure atomic ordering must be no stricter than success
diff --git a/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-success_Monotonic_or_stricter.zig b/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-success_Monotonic_or_stricter.zig
index 770c08f3fe..fe3344e536 100644
--- a/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-success_Monotonic_or_stricter.zig
+++ b/test/compile_errors/stage1/obj/atomic_orderings_of_cmpxchg-success_Monotonic_or_stricter.zig
@@ -4,6 +4,8 @@ export fn f() void {
     while (!@cmpxchgWeak(i32, &x, 1234, 5678, AtomicOrder.Unordered, AtomicOrder.Unordered)) {}
 }
 
-// atomic orderings of cmpxchg - success Monotonic or stricter
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:58: error: success atomic ordering must be Monotonic or stricter
diff --git a/test/compile_errors/stage1/obj/atomic_orderings_of_fence_Acquire_or_stricter.zig b/test/compile_errors/stage1/obj/atomic_orderings_of_fence_Acquire_or_stricter.zig
index 34ee200eeb..8a01871a80 100644
--- a/test/compile_errors/stage1/obj/atomic_orderings_of_fence_Acquire_or_stricter.zig
+++ b/test/compile_errors/stage1/obj/atomic_orderings_of_fence_Acquire_or_stricter.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     @fence(.Monotonic);
 }
 
-// atomic orderings of fence Acquire or stricter
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:12: error: atomic ordering must be Acquire or stricter
diff --git a/test/compile_errors/stage1/obj/atomicrmw_with_bool_op_not_.Xchg.zig b/test/compile_errors/stage1/obj/atomicrmw_with_bool_op_not_.Xchg.zig
index 03309737cf..0b5b0cd3c1 100644
--- a/test/compile_errors/stage1/obj/atomicrmw_with_bool_op_not_.Xchg.zig
+++ b/test/compile_errors/stage1/obj/atomicrmw_with_bool_op_not_.Xchg.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = @atomicRmw(bool, &x, .Add, true, .SeqCst);
 }
 
-// atomicrmw with bool op not .Xchg
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:30: error: @atomicRmw with bool only allowed with .Xchg
diff --git a/test/compile_errors/stage1/obj/atomicrmw_with_enum_op_not_.Xchg.zig b/test/compile_errors/stage1/obj/atomicrmw_with_enum_op_not_.Xchg.zig
index 95e6a7d95d..adbf4ca45e 100644
--- a/test/compile_errors/stage1/obj/atomicrmw_with_enum_op_not_.Xchg.zig
+++ b/test/compile_errors/stage1/obj/atomicrmw_with_enum_op_not_.Xchg.zig
@@ -9,6 +9,8 @@ export fn entry() void {
     _ = @atomicRmw(E, &x, .Add, .b, .SeqCst);
 }
 
-// atomicrmw with enum op not .Xchg
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:9:27: error: @atomicRmw with enum only allowed with .Xchg
diff --git a/test/compile_errors/stage1/obj/atomicrmw_with_float_op_not_.Xchg_.Add_or_.Sub.zig b/test/compile_errors/stage1/obj/atomicrmw_with_float_op_not_.Xchg_.Add_or_.Sub.zig
index a7359dbf32..4f3ebfcef6 100644
--- a/test/compile_errors/stage1/obj/atomicrmw_with_float_op_not_.Xchg_.Add_or_.Sub.zig
+++ b/test/compile_errors/stage1/obj/atomicrmw_with_float_op_not_.Xchg_.Add_or_.Sub.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = @atomicRmw(f32, &x, .And, 2, .SeqCst);
 }
 
-// atomicrmw with float op not .Xchg, .Add or .Sub
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:29: error: @atomicRmw with float only allowed with .Xchg, .Add and .Sub
diff --git a/test/compile_errors/stage1/obj/attempt_to_cast_enum_literal_to_error.zig b/test/compile_errors/stage1/obj/attempt_to_cast_enum_literal_to_error.zig
index fd120af3eb..f1c30815fc 100644
--- a/test/compile_errors/stage1/obj/attempt_to_cast_enum_literal_to_error.zig
+++ b/test/compile_errors/stage1/obj/attempt_to_cast_enum_literal_to_error.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     }
 }
 
-// attempt to cast enum literal to error
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: expected type 'error{Hi}', found '@Type(.EnumLiteral)'
diff --git a/test/compile_errors/stage1/obj/attempt_to_close_over_comptime_variable_from_outer_scope.zig b/test/compile_errors/stage1/obj/attempt_to_close_over_comptime_variable_from_outer_scope.zig
index 5eb5db3dc8..58eb9d19d2 100644
--- a/test/compile_errors/stage1/obj/attempt_to_close_over_comptime_variable_from_outer_scope.zig
+++ b/test/compile_errors/stage1/obj/attempt_to_close_over_comptime_variable_from_outer_scope.zig
@@ -5,7 +5,9 @@ fn SimpleList(comptime L: usize) type {
     };
 }
 
-// attempt to close over comptime variable from outer scope
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:19: error: mutable 'T' not accessible from here
 // tmp.zig:2:9: note: declared mutable here
diff --git a/test/compile_errors/stage1/obj/attempt_to_create_17_bit_float_type.zig b/test/compile_errors/stage1/obj/attempt_to_create_17_bit_float_type.zig
index bdea578696..ba7393fcb7 100644
--- a/test/compile_errors/stage1/obj/attempt_to_create_17_bit_float_type.zig
+++ b/test/compile_errors/stage1/obj/attempt_to_create_17_bit_float_type.zig
@@ -3,6 +3,8 @@ comptime {
     _ = @Type(.{ .Float = .{ .bits = 17 } });
 }
 
-// attempt to create 17 bit float type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:16: error: 17-bit float unsupported
diff --git a/test/compile_errors/stage1/obj/attempt_to_negate_a_non-integer_non-float_or_non-vector_type.zig b/test/compile_errors/stage1/obj/attempt_to_negate_a_non-integer_non-float_or_non-vector_type.zig
index 00ee26033d..e9bbf921ab 100644
--- a/test/compile_errors/stage1/obj/attempt_to_negate_a_non-integer_non-float_or_non-vector_type.zig
+++ b/test/compile_errors/stage1/obj/attempt_to_negate_a_non-integer_non-float_or_non-vector_type.zig
@@ -7,6 +7,8 @@ export fn entry() void {
     _ = x;
 }
 
-// attempt to negate a non-integer, non-float or non-vector type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:15: error: negation of type 'anyerror!u32'
diff --git a/test/compile_errors/stage1/obj/attempt_to_use_0_bit_type_in_extern_fn.zig b/test/compile_errors/stage1/obj/attempt_to_use_0_bit_type_in_extern_fn.zig
index d7767e25e9..021cd97f19 100644
--- a/test/compile_errors/stage1/obj/attempt_to_use_0_bit_type_in_extern_fn.zig
+++ b/test/compile_errors/stage1/obj/attempt_to_use_0_bit_type_in_extern_fn.zig
@@ -9,7 +9,9 @@ export fn entry2() void {
     bar(&{});
 }
 
-// attempt to use 0 bit type in extern fn
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:23: error: parameter of type '*void' has 0 bits; not allowed in function with calling convention 'C'
 // tmp.zig:7:11: error: parameter of type '*void' has 0 bits; not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/attempted_double_ampersand.zig b/test/compile_errors/stage1/obj/attempted_double_ampersand.zig
index cc92bc2fae..c749b172c6 100644
--- a/test/compile_errors/stage1/obj/attempted_double_ampersand.zig
+++ b/test/compile_errors/stage1/obj/attempted_double_ampersand.zig
@@ -5,6 +5,8 @@ export fn entry(a: bool, b: bool) i32 {
     return 5678;
 }
 
-// attempted `&&`
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:11: error: ambiguous use of '&&'; use 'and' for logical AND, or change whitespace to ' & &' for bitwise AND
diff --git a/test/compile_errors/stage1/obj/attempted_double_pipe_on_boolean_values.zig b/test/compile_errors/stage1/obj/attempted_double_pipe_on_boolean_values.zig
index 8e67b4950d..b991b1b61b 100644
--- a/test/compile_errors/stage1/obj/attempted_double_pipe_on_boolean_values.zig
+++ b/test/compile_errors/stage1/obj/attempted_double_pipe_on_boolean_values.zig
@@ -5,7 +5,9 @@ export fn entry(a: bool, b: bool) i32 {
     return 5678;
 }
 
-// attempted `||` on boolean values
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:9: error: expected error set type, found 'bool'
 // tmp.zig:2:11: note: `||` merges error sets; `or` performs boolean OR
diff --git a/test/compile_errors/stage1/obj/attempted_implicit_cast_from_T_to_slice_const_T.zig b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_T_to_slice_const_T.zig
index 4776104928..c3b0847129 100644
--- a/test/compile_errors/stage1/obj/attempted_implicit_cast_from_T_to_slice_const_T.zig
+++ b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_T_to_slice_const_T.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// attempted implicit cast from T to [*]const T
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:30: error: expected type '[*]const bool', found 'bool'
diff --git a/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_array_len_1_T.zig b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_array_len_1_T.zig
index d389c572ca..760866dd65 100644
--- a/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_array_len_1_T.zig
+++ b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_array_len_1_T.zig
@@ -6,7 +6,9 @@ export fn entry(byte: u8) void {
     _ = byte;
 }
 
-// attempted implicit cast from *const T to *[1]T
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:22: error: expected type '*[1]i32', found '*const i32'
 // tmp.zig:4:22: note: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_sliceT.zig b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_sliceT.zig
index 70d1cbece2..3ff9937983 100644
--- a/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_sliceT.zig
+++ b/test/compile_errors/stage1/obj/attempted_implicit_cast_from_const_T_to_sliceT.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     _ = x;
 }
 
-// attempted implicit cast from *const T to []T
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:23: error: expected type '[]u32', found '*const u32'
diff --git a/test/compile_errors/stage1/obj/bad_alignCast_at_comptime.zig b/test/compile_errors/stage1/obj/bad_alignCast_at_comptime.zig
index 7396dfc4dd..f1ed25e191 100644
--- a/test/compile_errors/stage1/obj/bad_alignCast_at_comptime.zig
+++ b/test/compile_errors/stage1/obj/bad_alignCast_at_comptime.zig
@@ -4,6 +4,8 @@ comptime {
     _ = aligned;
 }
 
-// bad @alignCast at comptime
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:35: error: pointer address 0x1 is not aligned to 4 bytes
diff --git a/test/compile_errors/stage1/obj/bad_alignment_in_asynccall.zig b/test/compile_errors/stage1/obj/bad_alignment_in_asynccall.zig
new file mode 100644
index 0000000000..3999140009
--- /dev/null
+++ b/test/compile_errors/stage1/obj/bad_alignment_in_asynccall.zig
@@ -0,0 +1,12 @@
+export fn entry() void {
+    var ptr: fn () callconv(.Async) void = func;
+    var bytes: [64]u8 = undefined;
+    _ = @asyncCall(&bytes, {}, ptr, .{});
+}
+fn func() callconv(.Async) void {}
+
+// error
+// backend=stage1
+// target=aarch64-linux-none
+//
+// tmp.zig:4:21: error: expected type '[]align(8) u8', found '*[64]u8'
diff --git a/test/compile_errors/stage1/obj/bad_alignment_in_implicit_cast_from_array_pointer_to_slice.zig b/test/compile_errors/stage1/obj/bad_alignment_in_implicit_cast_from_array_pointer_to_slice.zig
index ecfc5523d0..12064bd9ab 100644
--- a/test/compile_errors/stage1/obj/bad_alignment_in_implicit_cast_from_array_pointer_to_slice.zig
+++ b/test/compile_errors/stage1/obj/bad_alignment_in_implicit_cast_from_array_pointer_to_slice.zig
@@ -4,6 +4,8 @@ export fn a() void {
     _ = y;
 }
 
-// bad alignment in implicit cast from array pointer to slice
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:30: error: expected type '[]align(16) u8', found '*[10]u8'
diff --git a/test/compile_errors/stage1/obj/bad_alignment_type.zig b/test/compile_errors/stage1/obj/bad_alignment_type.zig
index 902ffc79d6..a4d8b7d68f 100644
--- a/test/compile_errors/stage1/obj/bad_alignment_type.zig
+++ b/test/compile_errors/stage1/obj/bad_alignment_type.zig
@@ -7,7 +7,9 @@ export fn entry2() void {
     _ = x;
 }
 
-// bad alignment type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:20: error: expected type 'u29', found 'bool'
 // tmp.zig:6:19: error: fractional component prevents float value 12.340000 from being casted to type 'u29'
diff --git a/test/compile_errors/stage1/obj/bad_identifier_in_function_with_struct_defined_inside_function_which_references_local_const.zig b/test/compile_errors/stage1/obj/bad_identifier_in_function_with_struct_defined_inside_function_which_references_local_const.zig
index f32301f9ff..7e44ad5057 100644
--- a/test/compile_errors/stage1/obj/bad_identifier_in_function_with_struct_defined_inside_function_which_references_local_const.zig
+++ b/test/compile_errors/stage1/obj/bad_identifier_in_function_with_struct_defined_inside_function_which_references_local_const.zig
@@ -10,6 +10,8 @@ export fn entry() void {
     _ = Block;
 }
 
-// bad identifier in function with struct defined inside function which references local const
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:8:5: error: use of undeclared identifier 'bogus'
diff --git a/test/compile_errors/stage1/obj/bad_import.zig b/test/compile_errors/stage1/obj/bad_import.zig
index f6e93559b2..1a7ab5f00b 100644
--- a/test/compile_errors/stage1/obj/bad_import.zig
+++ b/test/compile_errors/stage1/obj/bad_import.zig
@@ -1,5 +1,7 @@
 const bogus = @import("bogus-does-not-exist.zig",);
 
-// bad import
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:23: error: unable to load '${DIR}bogus-does-not-exist.zig': FileNotFound
diff --git a/test/compile_errors/stage1/obj/bad_usage_of_call.zig b/test/compile_errors/stage1/obj/bad_usage_of_call.zig
index 928c39b5a8..c77ccf1a52 100644
--- a/test/compile_errors/stage1/obj/bad_usage_of_call.zig
+++ b/test/compile_errors/stage1/obj/bad_usage_of_call.zig
@@ -19,7 +19,9 @@ fn bar() callconv(.Inline) void {}
 fn baz1() void {}
 fn baz2() void {}
 
-// bad usage of @call
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected tuple or struct, found 'void'
 // tmp.zig:5:14: error: unable to perform 'never_inline' call at compile-time
diff --git a/test/compile_errors/stage1/obj/bin_and_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_and_assign_on_undefined_value.zig
index d9dbdea741..1076f9abdb 100644
--- a/test/compile_errors/stage1/obj/bin_and_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/bin_and_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a &= a;
 }
 
-// bin and assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_and_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_and_on_undefined_value.zig
index 6775cd56ea..a53d9a10ac 100644
--- a/test/compile_errors/stage1/obj/bin_and_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/bin_and_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a & a;
 }
 
-// bin and on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_not_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_not_on_undefined_value.zig
index 0e543c4f00..7e0f554f0b 100644
--- a/test/compile_errors/stage1/obj/bin_not_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/bin_not_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = ~a;
 }
 
-// bin not on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:10: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_or_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_or_assign_on_undefined_value.zig
index bfbeb7ce3e..cc61fc03e1 100644
--- a/test/compile_errors/stage1/obj/bin_or_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/bin_or_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a |= a;
 }
 
-// bin or assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_or_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_or_on_undefined_value.zig
index 7a62ace9dd..7ac30bcb4e 100644
--- a/test/compile_errors/stage1/obj/bin_or_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/bin_or_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a | a;
 }
 
-// bin or on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_xor_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_xor_assign_on_undefined_value.zig
index bea5e1e089..37e3eae321 100644
--- a/test/compile_errors/stage1/obj/bin_xor_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/bin_xor_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a ^= a;
 }
 
-// bin xor assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/bin_xor_on_undefined_value.zig b/test/compile_errors/stage1/obj/bin_xor_on_undefined_value.zig
index f6ddb24521..f1656b6013 100644
--- a/test/compile_errors/stage1/obj/bin_xor_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/bin_xor_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a ^ a;
 }
 
-// bin xor on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/binary_not_on_number_literal.zig b/test/compile_errors/stage1/obj/binary_not_on_number_literal.zig
index 12f5953f16..34ddf9adfa 100644
--- a/test/compile_errors/stage1/obj/binary_not_on_number_literal.zig
+++ b/test/compile_errors/stage1/obj/binary_not_on_number_literal.zig
@@ -4,6 +4,8 @@ var block_aligned_stuff: usize = (4 + TINY_QUANTUM_SIZE) & ~(TINY_QUANTUM_SIZE -
 
 export fn entry() usize { return @sizeOf(@TypeOf(block_aligned_stuff)); }
 
-// binary not on number literal
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:60: error: unable to perform binary not operation on type 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/bitCast_same_size_but_bit_count_mismatch.zig b/test/compile_errors/stage1/obj/bitCast_same_size_but_bit_count_mismatch.zig
index e4945a1194..9150dc3285 100644
--- a/test/compile_errors/stage1/obj/bitCast_same_size_but_bit_count_mismatch.zig
+++ b/test/compile_errors/stage1/obj/bitCast_same_size_but_bit_count_mismatch.zig
@@ -3,6 +3,8 @@ export fn entry(byte: u8) void {
     _ = oops;
 }
 
-// @bitCast same size but bit count mismatch
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:25: error: destination type 'u7' has 7 bits but source type 'u8' has 8 bits
diff --git a/test/compile_errors/stage1/obj/bitCast_to_enum_type.zig b/test/compile_errors/stage1/obj/bitCast_to_enum_type.zig
index dbb73eba18..4d63ab9e01 100644
--- a/test/compile_errors/stage1/obj/bitCast_to_enum_type.zig
+++ b/test/compile_errors/stage1/obj/bitCast_to_enum_type.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = y;
 }
 
-// bitCast to enum type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:24: error: cannot cast a value of type 'y'
diff --git a/test/compile_errors/stage1/obj/bitCast_with_different_sizes_inside_an_expression.zig b/test/compile_errors/stage1/obj/bitCast_with_different_sizes_inside_an_expression.zig
index bb5c0c5936..64caef7cd0 100644
--- a/test/compile_errors/stage1/obj/bitCast_with_different_sizes_inside_an_expression.zig
+++ b/test/compile_errors/stage1/obj/bitCast_with_different_sizes_inside_an_expression.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = foo;
 }
 
-// @bitCast with different sizes inside an expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:25: error: destination type 'u8' has size 1 but source type 'f32' has size 4
diff --git a/test/compile_errors/stage1/obj/bit_shifting_only_works_on_integer_types.zig b/test/compile_errors/stage1/obj/bit_shifting_only_works_on_integer_types.zig
index 98fa3128aa..7d1c5873a1 100644
--- a/test/compile_errors/stage1/obj/bit_shifting_only_works_on_integer_types.zig
+++ b/test/compile_errors/stage1/obj/bit_shifting_only_works_on_integer_types.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// bit shifting only works on integer types
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:16: error: bit shifting operation expected integer type, found '*const u8'
diff --git a/test/compile_errors/stage1/obj/bogus_compile_var.zig b/test/compile_errors/stage1/obj/bogus_compile_var.zig
index 05777b9ecd..845d943c7d 100644
--- a/test/compile_errors/stage1/obj/bogus_compile_var.zig
+++ b/test/compile_errors/stage1/obj/bogus_compile_var.zig
@@ -1,6 +1,8 @@
 const x = @import("builtin").bogus;
 export fn entry() usize { return @sizeOf(@TypeOf(x)); }
 
-// bogus compile var
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:29: error: container 'builtin' has no member called 'bogus'
diff --git a/test/compile_errors/stage1/obj/bogus_method_call_on_slice.zig b/test/compile_errors/stage1/obj/bogus_method_call_on_slice.zig
index 8d34a09817..3ede578b34 100644
--- a/test/compile_errors/stage1/obj/bogus_method_call_on_slice.zig
+++ b/test/compile_errors/stage1/obj/bogus_method_call_on_slice.zig
@@ -4,6 +4,8 @@ fn f(m: []const u8) void {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(f)); }
 
-// bogus method call on slice
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:6: error: no member named 'copy' in '[]const u8'
diff --git a/test/compile_errors/stage1/obj/bool_not_on_undefined_value.zig b/test/compile_errors/stage1/obj/bool_not_on_undefined_value.zig
index 71ea7d5e96..5c99a9739b 100644
--- a/test/compile_errors/stage1/obj/bool_not_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/bool_not_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = !a;
 }
 
-// bool not on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:10: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/branch_on_undefined_value.zig b/test/compile_errors/stage1/obj/branch_on_undefined_value.zig
index d02ac22a2a..f4b922a332 100644
--- a/test/compile_errors/stage1/obj/branch_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/branch_on_undefined_value.zig
@@ -2,6 +2,8 @@ const x = if (undefined) true else false;
 
 export fn entry() usize { return @sizeOf(@TypeOf(x)); }
 
-// branch on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:15: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/cImport_with_bogus_include.zig b/test/compile_errors/stage1/obj/cImport_with_bogus_include.zig
index 89627b354f..141f21cb9a 100644
--- a/test/compile_errors/stage1/obj/cImport_with_bogus_include.zig
+++ b/test/compile_errors/stage1/obj/cImport_with_bogus_include.zig
@@ -1,7 +1,9 @@
 const c = @cImport(@cInclude("bogus.h"));
 export fn entry() usize { return @sizeOf(@TypeOf(c.bogo)); }
 
-// @cImport with bogus include
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:11: error: C import failed
 // .h:1:10: note: 'bogus.h' file not found
diff --git a/test/compile_errors/stage1/obj/call_assigned_to_constant.zig b/test/compile_errors/stage1/obj/call_assigned_to_constant.zig
index fb2febadb2..ca4e8b67cd 100644
--- a/test/compile_errors/stage1/obj/call_assigned_to_constant.zig
+++ b/test/compile_errors/stage1/obj/call_assigned_to_constant.zig
@@ -16,7 +16,9 @@ export fn entry1() void {
     baz = bar(42);
 }
 
-// call assigned to constant
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:12:14: error: cannot assign to constant
 // tmp.zig:16:14: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/call_with_new_stack_on_unsupported_target.zig b/test/compile_errors/stage1/obj/call_with_new_stack_on_unsupported_target.zig
new file mode 100644
index 0000000000..7cb504a3f9
--- /dev/null
+++ b/test/compile_errors/stage1/obj/call_with_new_stack_on_unsupported_target.zig
@@ -0,0 +1,11 @@
+var buf: [10]u8 align(16) = undefined;
+export fn entry() void {
+    @call(.{ .stack = &buf }, foo, .{});
+}
+fn foo() void {}
+
+// error
+// backend=stage1
+// target=wasm32-wasi-none
+//
+// tmp.zig:3:5: error: target arch 'wasm32' does not support calling with a new stack
diff --git a/test/compile_errors/stage1/obj/callconv_apcs_aapcs_aapcsvfp_on_unsupported_platform.zig b/test/compile_errors/stage1/obj/callconv_apcs_aapcs_aapcsvfp_on_unsupported_platform.zig
new file mode 100644
index 0000000000..fa06287803
--- /dev/null
+++ b/test/compile_errors/stage1/obj/callconv_apcs_aapcs_aapcsvfp_on_unsupported_platform.zig
@@ -0,0 +1,11 @@
+export fn entry1() callconv(.APCS) void {}
+export fn entry2() callconv(.AAPCS) void {}
+export fn entry3() callconv(.AAPCSVFP) void {}
+
+// error
+// backend=stage1
+// target=x86_64-linux-none
+//
+// tmp.zig:1:29: error: callconv 'APCS' is only available on ARM, not x86_64
+// tmp.zig:2:29: error: callconv 'AAPCS' is only available on ARM, not x86_64
+// tmp.zig:3:29: error: callconv 'AAPCSVFP' is only available on ARM, not x86_64
diff --git a/test/compile_errors/stage1/obj/callconv_interrupt_on_unsupported_platform.zig b/test/compile_errors/stage1/obj/callconv_interrupt_on_unsupported_platform.zig
new file mode 100644
index 0000000000..8304fb90c1
--- /dev/null
+++ b/test/compile_errors/stage1/obj/callconv_interrupt_on_unsupported_platform.zig
@@ -0,0 +1,7 @@
+export fn entry() callconv(.Interrupt) void {}
+
+// error
+// backend=stage1
+// target=aarch64-linux-none
+//
+// tmp.zig:1:28: error: callconv 'Interrupt' is only available on x86, x86_64, AVR, and MSP430, not aarch64
diff --git a/test/compile_errors/stage1/obj/callconv_signal_on_unsupported_platform.zig b/test/compile_errors/stage1/obj/callconv_signal_on_unsupported_platform.zig
new file mode 100644
index 0000000000..4b19b188fd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/callconv_signal_on_unsupported_platform.zig
@@ -0,0 +1,7 @@
+export fn entry() callconv(.Signal) void {}
+
+// error
+// backend=stage1
+// target=x86_64-linux-none
+//
+// tmp.zig:1:28: error: callconv 'Signal' is only available on AVR, not x86_64
diff --git a/test/compile_errors/stage1/obj/callconv_stdcall_fastcall_thiscall_on_unsupported_platform-0.zig b/test/compile_errors/stage1/obj/callconv_stdcall_fastcall_thiscall_on_unsupported_platform-0.zig
new file mode 100644
index 0000000000..f4994107cd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/callconv_stdcall_fastcall_thiscall_on_unsupported_platform-0.zig
@@ -0,0 +1,23 @@
+const F1 = fn () callconv(.Stdcall) void;
+const F2 = fn () callconv(.Fastcall) void;
+const F3 = fn () callconv(.Thiscall) void;
+export fn entry1() void {
+    var a: F1 = undefined;
+    _ = a;
+}
+export fn entry2() void {
+    var a: F2 = undefined;
+    _ = a;
+}
+export fn entry3() void {
+    var a: F3 = undefined;
+    _ = a;
+}
+
+// error
+// backend=stage1
+// target=x86_64-linux-none
+//
+// tmp.zig:1:27: error: callconv 'Stdcall' is only available on x86, not x86_64
+// tmp.zig:2:27: error: callconv 'Fastcall' is only available on x86, not x86_64
+// tmp.zig:3:27: error: callconv 'Thiscall' is only available on x86, not x86_64
diff --git a/test/compile_errors/stage1/obj/callconv_stdcall_fastcall_thiscall_on_unsupported_platform-1.zig b/test/compile_errors/stage1/obj/callconv_stdcall_fastcall_thiscall_on_unsupported_platform-1.zig
new file mode 100644
index 0000000000..aa23f9ae51
--- /dev/null
+++ b/test/compile_errors/stage1/obj/callconv_stdcall_fastcall_thiscall_on_unsupported_platform-1.zig
@@ -0,0 +1,11 @@
+export fn entry1() callconv(.Stdcall) void {}
+export fn entry2() callconv(.Fastcall) void {}
+export fn entry3() callconv(.Thiscall) void {}
+
+// error
+// backend=stage1
+// target=x86_64-linux-none
+//
+// tmp.zig:1:29: error: callconv 'Stdcall' is only available on x86, not x86_64
+// tmp.zig:2:29: error: callconv 'Fastcall' is only available on x86, not x86_64
+// tmp.zig:3:29: error: callconv 'Thiscall' is only available on x86, not x86_64
diff --git a/test/compile_errors/stage1/obj/callconv_vectorcall_on_unsupported_platform.zig b/test/compile_errors/stage1/obj/callconv_vectorcall_on_unsupported_platform.zig
new file mode 100644
index 0000000000..e60e6ab42c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/callconv_vectorcall_on_unsupported_platform.zig
@@ -0,0 +1,7 @@
+export fn entry() callconv(.Vectorcall) void {}
+
+// error
+// backend=stage1
+// target=x86_64-linux-none
+//
+// tmp.zig:1:28: error: callconv 'Vectorcall' is only available on x86 and AArch64, not x86_64
diff --git a/test/compile_errors/stage1/obj/calling_a_generic_function_only_known_at_runtime.zig b/test/compile_errors/stage1/obj/calling_a_generic_function_only_known_at_runtime.zig
index c31b18bb6f..3081f0f1e1 100644
--- a/test/compile_errors/stage1/obj/calling_a_generic_function_only_known_at_runtime.zig
+++ b/test/compile_errors/stage1/obj/calling_a_generic_function_only_known_at_runtime.zig
@@ -7,6 +7,8 @@ pub fn main() !void {
     foos[0](true);
 }
 
-// calling a generic function only known at runtime
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:9: error: calling a generic function requires compile-time known function value
diff --git a/test/compile_errors/stage1/obj/calling_function_with_naked_calling_convention.zig b/test/compile_errors/stage1/obj/calling_function_with_naked_calling_convention.zig
index c99e5b7831..401f84e687 100644
--- a/test/compile_errors/stage1/obj/calling_function_with_naked_calling_convention.zig
+++ b/test/compile_errors/stage1/obj/calling_function_with_naked_calling_convention.zig
@@ -3,7 +3,9 @@ export fn entry() void {
 }
 fn foo() callconv(.Naked) void { }
 
-// calling function with naked calling convention
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: unable to call function with naked calling convention
 // tmp.zig:4:1: note: declared here
diff --git a/test/compile_errors/stage1/obj/calling_var_args_extern_function_passing_array_instead_of_pointer.zig b/test/compile_errors/stage1/obj/calling_var_args_extern_function_passing_array_instead_of_pointer.zig
index e3cc4425db..a71ab051f2 100644
--- a/test/compile_errors/stage1/obj/calling_var_args_extern_function_passing_array_instead_of_pointer.zig
+++ b/test/compile_errors/stage1/obj/calling_var_args_extern_function_passing_array_instead_of_pointer.zig
@@ -3,6 +3,8 @@ export fn entry() void {
 }
 pub extern fn foo(format: *const u8, ...) void;
 
-// calling var args extern function, passing array instead of pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:16: error: expected type '*const u8', found '[5:0]u8'
diff --git a/test/compile_errors/stage1/obj/cannot_break_out_of_defer_expression.zig b/test/compile_errors/stage1/obj/cannot_break_out_of_defer_expression.zig
index 002a7717d3..3c7ae4fa2f 100644
--- a/test/compile_errors/stage1/obj/cannot_break_out_of_defer_expression.zig
+++ b/test/compile_errors/stage1/obj/cannot_break_out_of_defer_expression.zig
@@ -6,6 +6,8 @@ export fn foo() void {
     }
 }
 
-// cannot break out of defer expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:13: error: cannot break out of defer expression
diff --git a/test/compile_errors/stage1/obj/cannot_continue_out_of_defer_expression.zig b/test/compile_errors/stage1/obj/cannot_continue_out_of_defer_expression.zig
index 8adb7eafd6..56b8ced05b 100644
--- a/test/compile_errors/stage1/obj/cannot_continue_out_of_defer_expression.zig
+++ b/test/compile_errors/stage1/obj/cannot_continue_out_of_defer_expression.zig
@@ -6,6 +6,8 @@ export fn foo() void {
     }
 }
 
-// cannot continue out of defer expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:13: error: cannot continue out of defer expression
diff --git a/test/compile_errors/stage1/obj/capture_group_on_switch_prong_with_incompatible_payload_types.zig b/test/compile_errors/stage1/obj/capture_group_on_switch_prong_with_incompatible_payload_types.zig
index 8a4c94f503..ce2068d6c7 100644
--- a/test/compile_errors/stage1/obj/capture_group_on_switch_prong_with_incompatible_payload_types.zig
+++ b/test/compile_errors/stage1/obj/capture_group_on_switch_prong_with_incompatible_payload_types.zig
@@ -12,7 +12,9 @@ comptime {
     }
 }
 
-// capture group on switch prong with incompatible payload types
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:8:20: error: capture group with incompatible types
 // tmp.zig:8:9: note: type 'usize' here
diff --git a/test/compile_errors/stage1/obj/cast_enum_literal_to_enum_but_it_doesnt_match.zig b/test/compile_errors/stage1/obj/cast_enum_literal_to_enum_but_it_doesnt_match.zig
index 10717ff392..ba53646efc 100644
--- a/test/compile_errors/stage1/obj/cast_enum_literal_to_enum_but_it_doesnt_match.zig
+++ b/test/compile_errors/stage1/obj/cast_enum_literal_to_enum_but_it_doesnt_match.zig
@@ -7,7 +7,9 @@ export fn entry() void {
     _ = x;
 }
 
-// cast enum literal to enum but it doesn't match
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:20: error: enum 'Foo' has no field named 'c'
 // tmp.zig:1:13: note: 'Foo' declared here
diff --git a/test/compile_errors/stage1/obj/cast_error_union_of_global_error_set_to_error_union_of_smaller_error_set.zig b/test/compile_errors/stage1/obj/cast_error_union_of_global_error_set_to_error_union_of_smaller_error_set.zig
index fbb68c30c8..08962afc85 100644
--- a/test/compile_errors/stage1/obj/cast_error_union_of_global_error_set_to_error_union_of_smaller_error_set.zig
+++ b/test/compile_errors/stage1/obj/cast_error_union_of_global_error_set_to_error_union_of_smaller_error_set.zig
@@ -7,7 +7,9 @@ fn foo() anyerror!i32 {
     return error.B;
 }
 
-// cast error union of global error set to error union of smaller error set
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:35: error: expected type 'SmallErrorSet!i32', found 'anyerror!i32'
 // tmp.zig:3:35: note: error set 'anyerror' cannot cast into error set 'SmallErrorSet'
diff --git a/test/compile_errors/stage1/obj/cast_global_error_set_to_error_set.zig b/test/compile_errors/stage1/obj/cast_global_error_set_to_error_set.zig
index f37ffce229..be9487cc5a 100644
--- a/test/compile_errors/stage1/obj/cast_global_error_set_to_error_set.zig
+++ b/test/compile_errors/stage1/obj/cast_global_error_set_to_error_set.zig
@@ -7,7 +7,9 @@ fn foo() anyerror {
     return error.B;
 }
 
-// cast global error set to error set
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:31: error: expected type 'SmallErrorSet', found 'anyerror'
 // tmp.zig:3:31: note: cannot cast global error set into smaller set
diff --git a/test/compile_errors/stage1/obj/cast_negative_integer_literal_to_usize.zig b/test/compile_errors/stage1/obj/cast_negative_integer_literal_to_usize.zig
index 37e42c062c..763e0c8a23 100644
--- a/test/compile_errors/stage1/obj/cast_negative_integer_literal_to_usize.zig
+++ b/test/compile_errors/stage1/obj/cast_negative_integer_literal_to_usize.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// cast negative integer literal to usize
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:26: error: cannot cast negative value -10 to unsigned integer type 'usize'
diff --git a/test/compile_errors/stage1/obj/cast_negative_value_to_unsigned_integer.zig b/test/compile_errors/stage1/obj/cast_negative_value_to_unsigned_integer.zig
index e740d406f6..d2e3187140 100644
--- a/test/compile_errors/stage1/obj/cast_negative_value_to_unsigned_integer.zig
+++ b/test/compile_errors/stage1/obj/cast_negative_value_to_unsigned_integer.zig
@@ -9,7 +9,9 @@ export fn entry1() void {
     _ = unsigned;
 }
 
-// cast negative value to unsigned integer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:22: error: attempt to cast negative value to unsigned integer
 // tmp.zig:8:27: error: cannot cast negative value -1 to unsigned integer type 'u32'
diff --git a/test/compile_errors/stage1/obj/cast_unreachable.zig b/test/compile_errors/stage1/obj/cast_unreachable.zig
index 94fa121770..b043108737 100644
--- a/test/compile_errors/stage1/obj/cast_unreachable.zig
+++ b/test/compile_errors/stage1/obj/cast_unreachable.zig
@@ -3,7 +3,9 @@ fn f() i32 {
 }
 export fn entry() void { _ = f(); }
 
-// cast unreachable
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:12: error: unreachable code
 // tmp.zig:2:21: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/casting_bit_offset_pointer_to_regular_pointer.zig b/test/compile_errors/stage1/obj/casting_bit_offset_pointer_to_regular_pointer.zig
index 9b6c5ea0e6..f109cdf295 100644
--- a/test/compile_errors/stage1/obj/casting_bit_offset_pointer_to_regular_pointer.zig
+++ b/test/compile_errors/stage1/obj/casting_bit_offset_pointer_to_regular_pointer.zig
@@ -14,6 +14,8 @@ fn bar(x: *const u3) u3 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// casting bit offset pointer to regular pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:8:26: error: expected type '*const u3', found '*align(:3:1) const u3'
diff --git a/test/compile_errors/stage1/obj/catch_on_undefined_value.zig b/test/compile_errors/stage1/obj/catch_on_undefined_value.zig
index 9d22d07219..53a5f1c2a9 100644
--- a/test/compile_errors/stage1/obj/catch_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/catch_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a catch false;
 }
 
-// catch on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:11: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/chained_comparison_operators.zig b/test/compile_errors/stage1/obj/chained_comparison_operators.zig
index 89e1ea1e75..1e4ed8d82e 100644
--- a/test/compile_errors/stage1/obj/chained_comparison_operators.zig
+++ b/test/compile_errors/stage1/obj/chained_comparison_operators.zig
@@ -2,6 +2,8 @@ export fn a(value: u32) bool {
     return 1 < value < 1000;
 }
 
-// chained comparison operators
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:22: error: comparison operators cannot be chained
diff --git a/test/compile_errors/stage1/obj/cmpxchg_with_float.zig b/test/compile_errors/stage1/obj/cmpxchg_with_float.zig
index 8926ffc36b..11f2dc21c3 100644
--- a/test/compile_errors/stage1/obj/cmpxchg_with_float.zig
+++ b/test/compile_errors/stage1/obj/cmpxchg_with_float.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = @cmpxchgWeak(f32, &x, 1, 2, .SeqCst, .SeqCst);
 }
 
-// cmpxchg with float
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:22: error: expected bool, integer, enum or pointer type, found 'f32'
diff --git a/test/compile_errors/stage1/obj/colliding_invalid_top_level_functions.zig b/test/compile_errors/stage1/obj/colliding_invalid_top_level_functions.zig
index f4e5d24c46..344edbaa9f 100644
--- a/test/compile_errors/stage1/obj/colliding_invalid_top_level_functions.zig
+++ b/test/compile_errors/stage1/obj/colliding_invalid_top_level_functions.zig
@@ -2,7 +2,9 @@ fn func() bogus {}
 fn func() bogus {}
 export fn entry() usize { return @sizeOf(@TypeOf(func)); }
 
-// colliding invalid top level functions
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:1: error: redeclaration of 'func'
 // tmp.zig:1:1: note: other declaration here
diff --git a/test/compile_errors/stage1/obj/compare_optional_to_non-optional_with_invalid_types.zig b/test/compile_errors/stage1/obj/compare_optional_to_non-optional_with_invalid_types.zig
index 8713cf4501..32e1fe9b24 100644
--- a/test/compile_errors/stage1/obj/compare_optional_to_non-optional_with_invalid_types.zig
+++ b/test/compile_errors/stage1/obj/compare_optional_to_non-optional_with_invalid_types.zig
@@ -22,7 +22,9 @@ export fn invalidChildType() void {
     _ = (x == y);
 }
 
-// compare optional to non-optional with invalid types
+// error
+// backend=stage1
+// target=native
 //
 // :4:12: error: cannot compare types '?i32' and 'comptime_int'
 // :4:12: note: optional child type 'i32' must be the same as non-optional type 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/comparing_a_non-optional_pointer_against_null.zig b/test/compile_errors/stage1/obj/comparing_a_non-optional_pointer_against_null.zig
index 69a5120135..62b5708034 100644
--- a/test/compile_errors/stage1/obj/comparing_a_non-optional_pointer_against_null.zig
+++ b/test/compile_errors/stage1/obj/comparing_a_non-optional_pointer_against_null.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = &x == null;
 }
 
-// comparing a non-optional pointer against null
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:12: error: comparison of '*i32' with null
diff --git a/test/compile_errors/stage1/obj/comparing_against_undefined_produces_undefined_value.zig b/test/compile_errors/stage1/obj/comparing_against_undefined_produces_undefined_value.zig
index c329f51ef7..8bad61e6d1 100644
--- a/test/compile_errors/stage1/obj/comparing_against_undefined_produces_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/comparing_against_undefined_produces_undefined_value.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     if (2 == undefined) {}
 }
 
-// comparing against undefined produces undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:11: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/comparison_operators_with_undefined_value.zig b/test/compile_errors/stage1/obj/comparison_operators_with_undefined_value.zig
index 6021382fd4..818a575fc8 100644
--- a/test/compile_errors/stage1/obj/comparison_operators_with_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/comparison_operators_with_undefined_value.zig
@@ -35,7 +35,9 @@ comptime {
     if (a <= a) x += 1;
 }
 
-// comparison operators with undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:11: error: use of undefined value here causes undefined behavior
 // tmp.zig:11:11: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/comparison_with_error_union_and_error_value.zig b/test/compile_errors/stage1/obj/comparison_with_error_union_and_error_value.zig
index 260ccc6f01..16f3b21c3d 100644
--- a/test/compile_errors/stage1/obj/comparison_with_error_union_and_error_value.zig
+++ b/test/compile_errors/stage1/obj/comparison_with_error_union_and_error_value.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = number_or_error == error.SomethingAwful;
 }
 
-// comparison with error union and error value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:25: error: operator not allowed for type 'anyerror!i32'
diff --git a/test/compile_errors/stage1/obj/compile-time_division_by_zero.zig b/test/compile_errors/stage1/obj/compile-time_division_by_zero.zig
index 578dbc7b4a..e16f5f8cf4 100644
--- a/test/compile_errors/stage1/obj/compile-time_division_by_zero.zig
+++ b/test/compile_errors/stage1/obj/compile-time_division_by_zero.zig
@@ -5,6 +5,8 @@ comptime {
     _ = c;
 }
 
-// compile-time division by zero
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:17: error: division by zero
diff --git a/test/compile_errors/stage1/obj/compile-time_remainder_division_by_zero.zig b/test/compile_errors/stage1/obj/compile-time_remainder_division_by_zero.zig
index 015d229110..63f0def52c 100644
--- a/test/compile_errors/stage1/obj/compile-time_remainder_division_by_zero.zig
+++ b/test/compile_errors/stage1/obj/compile-time_remainder_division_by_zero.zig
@@ -5,6 +5,8 @@ comptime {
     _ = c;
 }
 
-// compile-time remainder division by zero
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:17: error: division by zero
diff --git a/test/compile_errors/stage1/obj/compileError_shows_traceback_of_references_that_caused_it.zig b/test/compile_errors/stage1/obj/compileError_shows_traceback_of_references_that_caused_it.zig
index 4273741ad2..c58e9b7768 100644
--- a/test/compile_errors/stage1/obj/compileError_shows_traceback_of_references_that_caused_it.zig
+++ b/test/compile_errors/stage1/obj/compileError_shows_traceback_of_references_that_caused_it.zig
@@ -7,6 +7,8 @@ export fn entry() i32 {
     return bar;
 }
 
-// @compileError shows traceback of references that caused it
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:13: error: aoeu
diff --git a/test/compile_errors/stage1/obj/compileLog_of_tagged_enum_doesnt_crash_the_compiler.zig b/test/compile_errors/stage1/obj/compileLog_of_tagged_enum_doesnt_crash_the_compiler.zig
index 0770b3b6a4..36e1ee1118 100644
--- a/test/compile_errors/stage1/obj/compileLog_of_tagged_enum_doesnt_crash_the_compiler.zig
+++ b/test/compile_errors/stage1/obj/compileLog_of_tagged_enum_doesnt_crash_the_compiler.zig
@@ -10,6 +10,8 @@ pub fn main () void {
     comptime testCompileLog(Bar{.X = 123});
 }
 
-// compileLog of tagged enum doesn't crash the compiler
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:5: error: found compile log statement
diff --git a/test/compile_errors/stage1/obj/compile_error_in_struct_init_expression.zig b/test/compile_errors/stage1/obj/compile_error_in_struct_init_expression.zig
index 6215c9ad76..041d09b002 100644
--- a/test/compile_errors/stage1/obj/compile_error_in_struct_init_expression.zig
+++ b/test/compile_errors/stage1/obj/compile_error_in_struct_init_expression.zig
@@ -9,6 +9,8 @@ export fn entry() void {
     _ = x;
 }
 
-// compile error in struct init expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:14: error: use of undeclared identifier 'crap'
diff --git a/test/compile_errors/stage1/obj/compile_error_when_evaluating_return_type_of_inferred_error_set.zig b/test/compile_errors/stage1/obj/compile_error_when_evaluating_return_type_of_inferred_error_set.zig
index 44d5b6a389..7b1d11b0a4 100644
--- a/test/compile_errors/stage1/obj/compile_error_when_evaluating_return_type_of_inferred_error_set.zig
+++ b/test/compile_errors/stage1/obj/compile_error_when_evaluating_return_type_of_inferred_error_set.zig
@@ -7,6 +7,8 @@ export fn entry() void {
     _ = car;
 }
 
-// compile error when evaluating return type of inferred error set
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:11: error: use of undeclared identifier 'SymbolThatDoesNotExist'
diff --git a/test/compile_errors/stage1/obj/compile_log.zig b/test/compile_errors/stage1/obj/compile_log.zig
index ef1cba4502..7f5d522407 100644
--- a/test/compile_errors/stage1/obj/compile_log.zig
+++ b/test/compile_errors/stage1/obj/compile_log.zig
@@ -7,7 +7,9 @@ fn bar(a: i32, b: []const u8) void {
     @compileLog("end",);
 }
 
-// compile log
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:5: error: found compile log statement
 // tmp.zig:6:5: error: found compile log statement
diff --git a/test/compile_errors/stage1/obj/compile_log_a_pointer_to_an_opaque_value.zig b/test/compile_errors/stage1/obj/compile_log_a_pointer_to_an_opaque_value.zig
index 15b7825a91..d585712b8a 100644
--- a/test/compile_errors/stage1/obj/compile_log_a_pointer_to_an_opaque_value.zig
+++ b/test/compile_errors/stage1/obj/compile_log_a_pointer_to_an_opaque_value.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     @compileLog(@ptrCast(*const anyopaque, &entry));
 }
 
-// compile log a pointer to an opaque value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: found compile log statement
diff --git a/test/compile_errors/stage1/obj/compile_log_statement_inside_function_which_must_be_comptime_evaluated.zig b/test/compile_errors/stage1/obj/compile_log_statement_inside_function_which_must_be_comptime_evaluated.zig
index f848ed7c7c..19b96048cb 100644
--- a/test/compile_errors/stage1/obj/compile_log_statement_inside_function_which_must_be_comptime_evaluated.zig
+++ b/test/compile_errors/stage1/obj/compile_log_statement_inside_function_which_must_be_comptime_evaluated.zig
@@ -7,6 +7,8 @@ export fn entry() void {
     _ = @typeName(Foo(i32));
 }
 
-// compile log statement inside function which must be comptime evaluated
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: found compile log statement
diff --git a/test/compile_errors/stage1/obj/compile_log_statement_warning_deduplication_in_generic_fn.zig b/test/compile_errors/stage1/obj/compile_log_statement_warning_deduplication_in_generic_fn.zig
index 05ac76724c..991021932d 100644
--- a/test/compile_errors/stage1/obj/compile_log_statement_warning_deduplication_in_generic_fn.zig
+++ b/test/compile_errors/stage1/obj/compile_log_statement_warning_deduplication_in_generic_fn.zig
@@ -7,6 +7,8 @@ fn inner(comptime n: usize) void {
     inline while (i < n) : (i += 1) { @compileLog("!@#$"); }
 }
 
-// compile log statement warning deduplication in generic fn
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:39: error: found compile log statement
diff --git a/test/compile_errors/stage1/obj/compile_time_division_by_zero.zig b/test/compile_errors/stage1/obj/compile_time_division_by_zero.zig
index 17187c47bf..7f7e168f02 100644
--- a/test/compile_errors/stage1/obj/compile_time_division_by_zero.zig
+++ b/test/compile_errors/stage1/obj/compile_time_division_by_zero.zig
@@ -5,6 +5,8 @@ fn foo(x: u32) u32 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(y)); }
 
-// compile time division by zero
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:14: error: division by zero
diff --git a/test/compile_errors/stage1/obj/comptime_cast_enum_to_union_but_field_has_payload.zig b/test/compile_errors/stage1/obj/comptime_cast_enum_to_union_but_field_has_payload.zig
index 36a2079a01..c3cf9e76e5 100644
--- a/test/compile_errors/stage1/obj/comptime_cast_enum_to_union_but_field_has_payload.zig
+++ b/test/compile_errors/stage1/obj/comptime_cast_enum_to_union_but_field_has_payload.zig
@@ -9,7 +9,9 @@ export fn entry() void {
     _ = x;
 }
 
-// comptime cast enum to union but field has payload
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:8:26: error: cast to union 'Value' must initialize 'i32' field 'A'
 // tmp.zig:3:5: note: field 'A' declared here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_catch.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_catch.zig
index 18c78c858c..7eefeb80b4 100644
--- a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_catch.zig
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_catch.zig
@@ -8,7 +8,9 @@ fn bad() !void {
     return error.Bad;
 }
 
-// comptime continue inside runtime catch
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:21: error: comptime control flow inside runtime block
 // tmp.zig:4:15: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_bool.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_bool.zig
index f6ec1b98b1..9ace5ddceb 100644
--- a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_bool.zig
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_bool.zig
@@ -7,7 +7,9 @@ export fn entry() void {
     }
 }
 
-// comptime continue inside runtime if bool
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:22: error: comptime control flow inside runtime block
 // tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_error.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_error.zig
index 556a8769a5..554ba3c43e 100644
--- a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_error.zig
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_error.zig
@@ -7,7 +7,9 @@ export fn entry() void {
     }
 }
 
-// comptime continue inside runtime if error
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:20: error: comptime control flow inside runtime block
 // tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_optional.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_optional.zig
index 4f35398a2b..32c71e5c77 100644
--- a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_optional.zig
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_if_optional.zig
@@ -7,7 +7,9 @@ export fn entry() void {
     }
 }
 
-// comptime continue inside runtime if optional
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:20: error: comptime control flow inside runtime block
 // tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_switch.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_switch.zig
index 259cbd602e..d145897b41 100644
--- a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_switch.zig
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_switch.zig
@@ -10,7 +10,9 @@ export fn entry() void {
     }
 }
 
-// comptime continue inside runtime switch
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:19: error: comptime control flow inside runtime block
 // tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_bool.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_bool.zig
index 5d86394815..8e57854728 100644
--- a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_bool.zig
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_bool.zig
@@ -7,7 +7,9 @@ export fn entry() void {
     }
 }
 
-// comptime continue inside runtime while bool
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:25: error: comptime control flow inside runtime block
 // tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_error.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_error.zig
index 0ba49cb3ca..818455c354 100644
--- a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_error.zig
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_error.zig
@@ -9,7 +9,9 @@ export fn entry() void {
     }
 }
 
-// comptime continue inside runtime while error
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:13: error: comptime control flow inside runtime block
 // tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_optional.zig b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_optional.zig
index b2cfd2f69d..ed22cc2cac 100644
--- a/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_optional.zig
+++ b/test/compile_errors/stage1/obj/comptime_continue_inside_runtime_while_optional.zig
@@ -7,7 +7,9 @@ export fn entry() void {
     }
 }
 
-// comptime continue inside runtime while optional
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:23: error: comptime control flow inside runtime block
 // tmp.zig:5:9: note: runtime block created here
diff --git a/test/compile_errors/stage1/obj/comptime_float_in_asm_input.zig b/test/compile_errors/stage1/obj/comptime_float_in_asm_input.zig
index c2333586b4..92ffadc4f7 100644
--- a/test/compile_errors/stage1/obj/comptime_float_in_asm_input.zig
+++ b/test/compile_errors/stage1/obj/comptime_float_in_asm_input.zig
@@ -2,6 +2,8 @@ export fn foo() void {
     asm volatile ("" : : [bar]"r"(3.17) : "");
 }
 
-// comptime_float in asm input
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:35: error: expected sized integer or sized float, found comptime_float
diff --git a/test/compile_errors/stage1/obj/comptime_implicit_cast_f64_to_f32.zig b/test/compile_errors/stage1/obj/comptime_implicit_cast_f64_to_f32.zig
index f98c45a348..af5d49c7cb 100644
--- a/test/compile_errors/stage1/obj/comptime_implicit_cast_f64_to_f32.zig
+++ b/test/compile_errors/stage1/obj/comptime_implicit_cast_f64_to_f32.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     _ = y;
 }
 
-// comptime implicit cast f64 to f32
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:20: error: cast of value 16777217.000000 to type 'f32' loses information
diff --git a/test/compile_errors/stage1/obj/comptime_int_in_asm_input.zig b/test/compile_errors/stage1/obj/comptime_int_in_asm_input.zig
index 5a587e5a77..3e3ccf8c27 100644
--- a/test/compile_errors/stage1/obj/comptime_int_in_asm_input.zig
+++ b/test/compile_errors/stage1/obj/comptime_int_in_asm_input.zig
@@ -2,6 +2,8 @@ export fn foo() void {
     asm volatile ("" : : [bar]"r"(3) : "");
 }
 
-// comptime_int in asm input
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:35: error: expected sized integer or sized float, found comptime_int
diff --git a/test/compile_errors/stage1/obj/comptime_ptrcast_of_zero-sized_type.zig b/test/compile_errors/stage1/obj/comptime_ptrcast_of_zero-sized_type.zig
index 1d3f91fe91..231e735cfa 100644
--- a/test/compile_errors/stage1/obj/comptime_ptrcast_of_zero-sized_type.zig
+++ b/test/compile_errors/stage1/obj/comptime_ptrcast_of_zero-sized_type.zig
@@ -5,6 +5,8 @@ fn foo() void {
 }
 comptime { foo(); }
 
-// comptime ptrcast of zero-sized type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:21: error: '*const struct:2:17' and '[*]const u8' do not have the same in-memory representation
diff --git a/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_terminated.zig b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_terminated.zig
index 622e0cf76b..598d23a305 100644
--- a/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_terminated.zig
+++ b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_terminated.zig
@@ -54,7 +54,9 @@ export fn foo_slice() void {
     }
 }
 
-// comptime slice-sentinel does not match memory at target index (terminated)
+// error
+// backend=stage1
+// target=native
 //
 // :4:29: error: slice-sentinel does not match memory at target index
 // :12:29: error: slice-sentinel does not match memory at target index
diff --git a/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_unterminated.zig b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_unterminated.zig
index e9451cf9aa..d6b469aaf1 100644
--- a/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_unterminated.zig
+++ b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_memory_at_target_index_unterminated.zig
@@ -54,7 +54,9 @@ export fn foo_slice() void {
     }
 }
 
-// comptime slice-sentinel does not match memory at target index (unterminated)
+// error
+// backend=stage1
+// target=native
 //
 // :4:29: error: slice-sentinel does not match memory at target index
 // :12:29: error: slice-sentinel does not match memory at target index
diff --git a/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_target-sentinel.zig b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_target-sentinel.zig
index 597a493705..b204cfc684 100644
--- a/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_target-sentinel.zig
+++ b/test/compile_errors/stage1/obj/comptime_slice-sentinel_does_not_match_target-sentinel.zig
@@ -54,7 +54,9 @@ export fn foo_slice() void {
     }
 }
 
-// comptime slice-sentinel does not match target-sentinel
+// error
+// backend=stage1
+// target=native
 //
 // :4:29: error: slice-sentinel does not match target-sentinel
 // :12:29: error: slice-sentinel does not match target-sentinel
diff --git a/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_terminated.zig b/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_terminated.zig
index d5fc64ea84..82c19126c0 100644
--- a/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_terminated.zig
+++ b/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_terminated.zig
@@ -54,7 +54,9 @@ export fn foo_slice() void {
     }
 }
 
-// comptime slice-sentinel is out of bounds (terminated)
+// error
+// backend=stage1
+// target=native
 //
 // :4:29: error: out of bounds slice
 // :12:29: error: out of bounds slice
diff --git a/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_unterminated.zig b/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_unterminated.zig
index 05a499ca8a..952b17600a 100644
--- a/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_unterminated.zig
+++ b/test/compile_errors/stage1/obj/comptime_slice-sentinel_is_out_of_bounds_unterminated.zig
@@ -54,7 +54,9 @@ export fn foo_slice() void {
     }
 }
 
-// comptime slice-sentinel is out of bounds (unterminated)
+// error
+// backend=stage1
+// target=native
 //
 // :4:29: error: slice-sentinel is out of bounds
 // :12:29: error: slice-sentinel is out of bounds
diff --git a/test/compile_errors/stage1/obj/comptime_slice_of_an_undefined_slice.zig b/test/compile_errors/stage1/obj/comptime_slice_of_an_undefined_slice.zig
index b56feddc02..4aa519f41e 100644
--- a/test/compile_errors/stage1/obj/comptime_slice_of_an_undefined_slice.zig
+++ b/test/compile_errors/stage1/obj/comptime_slice_of_an_undefined_slice.zig
@@ -4,6 +4,8 @@ comptime {
     _ = b;
 }
 
-// comptime slice of an undefined slice
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:14: error: slice of undefined
diff --git a/test/compile_errors/stage1/obj/comptime_slice_of_undefined_pointer_non-zero_len.zig b/test/compile_errors/stage1/obj/comptime_slice_of_undefined_pointer_non-zero_len.zig
index bcddd1d866..ec7fbdc6e2 100644
--- a/test/compile_errors/stage1/obj/comptime_slice_of_undefined_pointer_non-zero_len.zig
+++ b/test/compile_errors/stage1/obj/comptime_slice_of_undefined_pointer_non-zero_len.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = slice;
 }
 
-// comptime slice of undefined pointer non-zero len
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:41: error: non-zero length slice of undefined pointer
diff --git a/test/compile_errors/stage1/obj/comptime_struct_field_no_init_value.zig b/test/compile_errors/stage1/obj/comptime_struct_field_no_init_value.zig
index c3de76a794..b889911a4d 100644
--- a/test/compile_errors/stage1/obj/comptime_struct_field_no_init_value.zig
+++ b/test/compile_errors/stage1/obj/comptime_struct_field_no_init_value.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     _ = f;
 }
 
-// comptime struct field, no init value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: comptime field without default initialization value
diff --git a/test/compile_errors/stage1/obj/const_frame_cast_to_anyframe.zig b/test/compile_errors/stage1/obj/const_frame_cast_to_anyframe.zig
index 1e6cdba507..affdb953d7 100644
--- a/test/compile_errors/stage1/obj/const_frame_cast_to_anyframe.zig
+++ b/test/compile_errors/stage1/obj/const_frame_cast_to_anyframe.zig
@@ -11,7 +11,9 @@ fn func() void {
     suspend {}
 }
 
-// const frame cast to anyframe
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:12: error: expected type 'anyframe', found '*const @Frame(func)'
 // tmp.zig:7:24: error: expected type 'anyframe', found '*const @Frame(func)'
diff --git a/test/compile_errors/stage1/obj/const_is_a_statement_not_an_expression.zig b/test/compile_errors/stage1/obj/const_is_a_statement_not_an_expression.zig
index 4396407dd1..b90878abeb 100644
--- a/test/compile_errors/stage1/obj/const_is_a_statement_not_an_expression.zig
+++ b/test/compile_errors/stage1/obj/const_is_a_statement_not_an_expression.zig
@@ -2,6 +2,8 @@ export fn f() void {
     (const a = 0);
 }
 
-// const is a statement, not an expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:6: error: expected expression, found 'const'
diff --git a/test/compile_errors/stage1/obj/container_init_with_non-type.zig b/test/compile_errors/stage1/obj/container_init_with_non-type.zig
index 6464555df5..3364b2f5b6 100644
--- a/test/compile_errors/stage1/obj/container_init_with_non-type.zig
+++ b/test/compile_errors/stage1/obj/container_init_with_non-type.zig
@@ -3,6 +3,8 @@ const a = zero{1};
 
 export fn entry() usize { return @sizeOf(@TypeOf(a)); }
 
-// container init with non-type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:11: error: expected type 'type', found 'i32'
diff --git a/test/compile_errors/stage1/obj/control_flow_uses_comptime_var_at_runtime.zig b/test/compile_errors/stage1/obj/control_flow_uses_comptime_var_at_runtime.zig
index ee2c0234c3..cb2c3e9f6e 100644
--- a/test/compile_errors/stage1/obj/control_flow_uses_comptime_var_at_runtime.zig
+++ b/test/compile_errors/stage1/obj/control_flow_uses_comptime_var_at_runtime.zig
@@ -7,7 +7,9 @@ export fn foo() void {
 
 fn bar() void { }
 
-// control flow uses comptime var at runtime
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: control flow attempts to use compile-time variable at runtime
 // tmp.zig:3:24: note: compile-time variable assigned here
diff --git a/test/compile_errors/stage1/obj/control_reaches_end_of_non-void_function.zig b/test/compile_errors/stage1/obj/control_reaches_end_of_non-void_function.zig
index 13d2876823..e15c1bd40b 100644
--- a/test/compile_errors/stage1/obj/control_reaches_end_of_non-void_function.zig
+++ b/test/compile_errors/stage1/obj/control_reaches_end_of_non-void_function.zig
@@ -1,6 +1,8 @@
 fn a() i32 {}
 export fn entry() void { _ = a(); }
 
-// control reaches end of non-void function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:12: error: expected type 'i32', found 'void'
diff --git a/test/compile_errors/stage1/obj/declaration_between_fields.zig b/test/compile_errors/stage1/obj/declaration_between_fields.zig
index 6e6b60f2e4..25a1ff5abc 100644
--- a/test/compile_errors/stage1/obj/declaration_between_fields.zig
+++ b/test/compile_errors/stage1/obj/declaration_between_fields.zig
@@ -15,7 +15,9 @@ comptime {
     _ = S;
 }
 
-// declaration between fields
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:9:5: error: declarations are not allowed between container fields
 // tmp.zig:5:5: note: field before declarations here
diff --git a/test/compile_errors/stage1/obj/declaration_with_same_name_as_primitive_must_use_special_syntax.zig b/test/compile_errors/stage1/obj/declaration_with_same_name_as_primitive_must_use_special_syntax.zig
index c10f397da4..46b0257ed5 100644
--- a/test/compile_errors/stage1/obj/declaration_with_same_name_as_primitive_must_use_special_syntax.zig
+++ b/test/compile_errors/stage1/obj/declaration_with_same_name_as_primitive_must_use_special_syntax.zig
@@ -4,7 +4,9 @@ export fn entry() void {
     _ = a;
 }
 
-// declaration with same name as primitive must use special syntax
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:7: error: name shadows primitive 'u8'
 // tmp.zig:1:7: note: consider using @"u8" to disambiguate
diff --git a/test/compile_errors/stage1/obj/deduplicate_undeclared_identifier.zig b/test/compile_errors/stage1/obj/deduplicate_undeclared_identifier.zig
index 1c9d6c3d31..1e3b3bf6db 100644
--- a/test/compile_errors/stage1/obj/deduplicate_undeclared_identifier.zig
+++ b/test/compile_errors/stage1/obj/deduplicate_undeclared_identifier.zig
@@ -5,6 +5,8 @@ export fn b() void {
     x += 1;
 }
 
-// deduplicate undeclared identifier
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: use of undeclared identifier 'x'
diff --git a/test/compile_errors/stage1/obj/deref_on_undefined_value.zig b/test/compile_errors/stage1/obj/deref_on_undefined_value.zig
index 607f6ea5e0..f64d567a26 100644
--- a/test/compile_errors/stage1/obj/deref_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/deref_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a.*;
 }
 
-// deref on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: attempt to dereference undefined value
diff --git a/test/compile_errors/stage1/obj/deref_slice_and_get_len_field.zig b/test/compile_errors/stage1/obj/deref_slice_and_get_len_field.zig
index 2fa5ff6133..98097597cc 100644
--- a/test/compile_errors/stage1/obj/deref_slice_and_get_len_field.zig
+++ b/test/compile_errors/stage1/obj/deref_slice_and_get_len_field.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = a.*.len;
 }
 
-// deref slice and get len field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:10: error: attempt to dereference non-pointer type '[]u8'
diff --git a/test/compile_errors/stage1/obj/dereference_an_array.zig b/test/compile_errors/stage1/obj/dereference_an_array.zig
index 713c655784..0dd91f70e5 100644
--- a/test/compile_errors/stage1/obj/dereference_an_array.zig
+++ b/test/compile_errors/stage1/obj/dereference_an_array.zig
@@ -7,6 +7,8 @@ pub fn pass(in: []u8) []u8 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(pass)); }
 
-// dereference an array
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:10: error: attempt to dereference non-pointer type '[10]u8'
diff --git a/test/compile_errors/stage1/obj/dereference_unknown_length_pointer.zig b/test/compile_errors/stage1/obj/dereference_unknown_length_pointer.zig
index 22ad181fb2..c305e4bc98 100644
--- a/test/compile_errors/stage1/obj/dereference_unknown_length_pointer.zig
+++ b/test/compile_errors/stage1/obj/dereference_unknown_length_pointer.zig
@@ -2,6 +2,8 @@ export fn entry(x: [*]i32) i32 {
     return x.*;
 }
 
-// dereference unknown length pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:13: error: index syntax required for unknown-length pointer type '[*]i32'
diff --git a/test/compile_errors/stage1/obj/direct_struct_loop.zig b/test/compile_errors/stage1/obj/direct_struct_loop.zig
index 25b3c724c3..3062e617d6 100644
--- a/test/compile_errors/stage1/obj/direct_struct_loop.zig
+++ b/test/compile_errors/stage1/obj/direct_struct_loop.zig
@@ -1,6 +1,8 @@
 const A = struct { a : A, };
 export fn entry() usize { return @sizeOf(A); }
 
-// direct struct loop
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:11: error: struct 'A' depends on itself
diff --git a/test/compile_errors/stage1/obj/directly_embedding_opaque_type_in_struct_and_union.zig b/test/compile_errors/stage1/obj/directly_embedding_opaque_type_in_struct_and_union.zig
index 811fc00f50..8b8d84ad2a 100644
--- a/test/compile_errors/stage1/obj/directly_embedding_opaque_type_in_struct_and_union.zig
+++ b/test/compile_errors/stage1/obj/directly_embedding_opaque_type_in_struct_and_union.zig
@@ -20,7 +20,9 @@ export fn c() void {
     _ = qux;
 }
 
-// directly embedding opaque type in struct and union
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: opaque types have unknown size and therefore cannot be directly embedded in structs
 // tmp.zig:7:5: error: opaque types have unknown size and therefore cannot be directly embedded in unions
diff --git a/test/compile_errors/stage1/obj/disallow_coercion_from_non-null-terminated_pointer_to_null-terminated_pointer.zig b/test/compile_errors/stage1/obj/disallow_coercion_from_non-null-terminated_pointer_to_null-terminated_pointer.zig
index a8467ddc87..1d0a6216dd 100644
--- a/test/compile_errors/stage1/obj/disallow_coercion_from_non-null-terminated_pointer_to_null-terminated_pointer.zig
+++ b/test/compile_errors/stage1/obj/disallow_coercion_from_non-null-terminated_pointer_to_null-terminated_pointer.zig
@@ -5,6 +5,8 @@ pub fn main() void {
     _ = puts(no_zero_ptr);
 }
 
-// disallow coercion from non-null-terminated pointer to null-terminated pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:14: error: expected type '[*:0]const u8', found '[*]const u8'
diff --git a/test/compile_errors/stage1/obj/discarding_error_value.zig b/test/compile_errors/stage1/obj/discarding_error_value.zig
index 966a43a47c..dcfa22e8cb 100644
--- a/test/compile_errors/stage1/obj/discarding_error_value.zig
+++ b/test/compile_errors/stage1/obj/discarding_error_value.zig
@@ -5,6 +5,8 @@ fn foo() !void {
     return error.OutOfMemory;
 }
 
-// discarding error value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:12: error: error is discarded. consider using `try`, `catch`, or `if`
diff --git a/test/compile_errors/stage1/obj/div_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/div_assign_on_undefined_value.zig
index 40c31649fb..5f18e6286a 100644
--- a/test/compile_errors/stage1/obj/div_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/div_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a /= a;
 }
 
-// div assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/div_on_undefined_value.zig b/test/compile_errors/stage1/obj/div_on_undefined_value.zig
index 17af3fa221..9857b1c779 100644
--- a/test/compile_errors/stage1/obj/div_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/div_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a / a;
 }
 
-// div on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/division_by_zero.zig b/test/compile_errors/stage1/obj/division_by_zero.zig
index 178d1d935b..3023f0c6f3 100644
--- a/test/compile_errors/stage1/obj/division_by_zero.zig
+++ b/test/compile_errors/stage1/obj/division_by_zero.zig
@@ -8,7 +8,9 @@ export fn entry2() usize { return @sizeOf(@TypeOf(lit_float_x)); }
 export fn entry3() usize { return @sizeOf(@TypeOf(int_x)); }
 export fn entry4() usize { return @sizeOf(@TypeOf(float_x)); }
 
-// division by zero
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:21: error: division by zero
 // tmp.zig:2:25: error: division by zero
diff --git a/test/compile_errors/stage1/obj/dont_implicit_cast_double_pointer_to_anyopaque.zig b/test/compile_errors/stage1/obj/dont_implicit_cast_double_pointer_to_anyopaque.zig
index 5894103f1c..f61dec2ee0 100644
--- a/test/compile_errors/stage1/obj/dont_implicit_cast_double_pointer_to_anyopaque.zig
+++ b/test/compile_errors/stage1/obj/dont_implicit_cast_double_pointer_to_anyopaque.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     _ = ptr2;
 }
 
-// don't implicit cast double pointer to *anyopaque
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:29: error: expected type '*anyopaque', found '**u32'
diff --git a/test/compile_errors/stage1/obj/double_optional_on_main_return_value.zig b/test/compile_errors/stage1/obj/double_optional_on_main_return_value.zig
index c85706bc87..c61ac400ba 100644
--- a/test/compile_errors/stage1/obj/double_optional_on_main_return_value.zig
+++ b/test/compile_errors/stage1/obj/double_optional_on_main_return_value.zig
@@ -1,6 +1,8 @@
 pub fn main() ??void {
 }
 
-// double ?? on main return value
+// error
+// backend=stage1
+// target=native
 //
 // error: expected return type of main to be 'void', '!void', 'noreturn', 'u8', or '!u8'
diff --git a/test/compile_errors/stage1/obj/duplicate_boolean_switch_value.zig b/test/compile_errors/stage1/obj/duplicate_boolean_switch_value.zig
index 8c496d5e19..5b85c0a2eb 100644
--- a/test/compile_errors/stage1/obj/duplicate_boolean_switch_value.zig
+++ b/test/compile_errors/stage1/obj/duplicate_boolean_switch_value.zig
@@ -15,7 +15,9 @@ comptime {
     _ = x;
 }
 
-// duplicate boolean switch value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:9: error: duplicate switch value
 // tmp.zig:13:9: error: duplicate switch value
diff --git a/test/compile_errors/stage1/obj/duplicate_enum_field.zig b/test/compile_errors/stage1/obj/duplicate_enum_field.zig
index 2aee3cc2dc..cd024270bd 100644
--- a/test/compile_errors/stage1/obj/duplicate_enum_field.zig
+++ b/test/compile_errors/stage1/obj/duplicate_enum_field.zig
@@ -8,7 +8,9 @@ export fn entry() void {
     _ = a;
 }
 
-// duplicate enum field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: duplicate enum field: 'Bar'
 // tmp.zig:2:5: note: other field here
diff --git a/test/compile_errors/stage1/obj/duplicate_error_in_switch.zig b/test/compile_errors/stage1/obj/duplicate_error_in_switch.zig
index bca59056c3..140a14ec81 100644
--- a/test/compile_errors/stage1/obj/duplicate_error_in_switch.zig
+++ b/test/compile_errors/stage1/obj/duplicate_error_in_switch.zig
@@ -14,7 +14,9 @@ fn foo(x: i32) !void {
     }
 }
 
-// duplicate error in switch
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:14: error: duplicate switch value: '@typeInfo(@typeInfo(@TypeOf(foo)).Fn.return_type.?).ErrorUnion.error_set.Foo'
 // tmp.zig:3:14: note: other value here
diff --git a/test/compile_errors/stage1/obj/duplicate_error_value_in_error_set.zig b/test/compile_errors/stage1/obj/duplicate_error_value_in_error_set.zig
index 90457562b2..30d3bee8ab 100644
--- a/test/compile_errors/stage1/obj/duplicate_error_value_in_error_set.zig
+++ b/test/compile_errors/stage1/obj/duplicate_error_value_in_error_set.zig
@@ -7,7 +7,9 @@ export fn entry() void {
     _ = a;
 }
 
-// duplicate error value in error set
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: duplicate error set field 'Bar'
 // tmp.zig:2:5: note: previous declaration here
diff --git a/test/compile_errors/stage1/obj/duplicate_field_in_struct_value_expression.zig b/test/compile_errors/stage1/obj/duplicate_field_in_struct_value_expression.zig
index 6df71430d9..1c0bac75e2 100644
--- a/test/compile_errors/stage1/obj/duplicate_field_in_struct_value_expression.zig
+++ b/test/compile_errors/stage1/obj/duplicate_field_in_struct_value_expression.zig
@@ -13,6 +13,8 @@ export fn f() void {
     _ = a;
 }
 
-// duplicate field in struct value expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:11:9: error: duplicate field
diff --git a/test/compile_errors/stage1/obj/duplicate_struct_field.zig b/test/compile_errors/stage1/obj/duplicate_struct_field.zig
index d1fd05aacc..93afdef70e 100644
--- a/test/compile_errors/stage1/obj/duplicate_struct_field.zig
+++ b/test/compile_errors/stage1/obj/duplicate_struct_field.zig
@@ -7,7 +7,9 @@ export fn entry() void {
     _ = a;
 }
 
-// duplicate struct field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: duplicate struct field: 'Bar'
 // tmp.zig:2:5: note: other field here
diff --git a/test/compile_errors/stage1/obj/duplicate_union_field.zig b/test/compile_errors/stage1/obj/duplicate_union_field.zig
index a8bff106c6..5cbdcb7820 100644
--- a/test/compile_errors/stage1/obj/duplicate_union_field.zig
+++ b/test/compile_errors/stage1/obj/duplicate_union_field.zig
@@ -7,7 +7,9 @@ export fn entry() void {
     _ = a;
 }
 
-// duplicate union field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: duplicate union field: 'Bar'
 // tmp.zig:2:5: note: other field here
diff --git a/test/compile_errors/stage1/obj/embedFile_with_bogus_file.zig b/test/compile_errors/stage1/obj/embedFile_with_bogus_file.zig
index e50e091909..a03949b40a 100644
--- a/test/compile_errors/stage1/obj/embedFile_with_bogus_file.zig
+++ b/test/compile_errors/stage1/obj/embedFile_with_bogus_file.zig
@@ -2,6 +2,8 @@ const resource = @embedFile("bogus.txt",);
 
 export fn entry() usize { return @sizeOf(@TypeOf(resource)); }
 
-// @embedFile with bogus file
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:29: error: unable to find '
diff --git a/test/compile_errors/stage1/obj/empty_for_loop_body.zig b/test/compile_errors/stage1/obj/empty_for_loop_body.zig
index 6e042f71e4..b824c93131 100644
--- a/test/compile_errors/stage1/obj/empty_for_loop_body.zig
+++ b/test/compile_errors/stage1/obj/empty_for_loop_body.zig
@@ -2,6 +2,8 @@ export fn a() void {
     for(undefined) |x|;
 }
 
-// empty for loop body
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:23: error: expected block or assignment, found ';'
diff --git a/test/compile_errors/stage1/obj/empty_if_body.zig b/test/compile_errors/stage1/obj/empty_if_body.zig
index a81973396f..0a7b5b1b8b 100644
--- a/test/compile_errors/stage1/obj/empty_if_body.zig
+++ b/test/compile_errors/stage1/obj/empty_if_body.zig
@@ -2,6 +2,8 @@ export fn a() void {
     if(true);
 }
 
-// empty if body
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:13: error: expected block or assignment, found ';'
diff --git a/test/compile_errors/stage1/obj/empty_switch_on_an_integer.zig b/test/compile_errors/stage1/obj/empty_switch_on_an_integer.zig
index eb0bdbab19..a7b8e2a81b 100644
--- a/test/compile_errors/stage1/obj/empty_switch_on_an_integer.zig
+++ b/test/compile_errors/stage1/obj/empty_switch_on_an_integer.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     switch(x) {}
 }
 
-// empty switch on an integer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: switch must handle all possibilities
diff --git a/test/compile_errors/stage1/obj/empty_while_loop_body.zig b/test/compile_errors/stage1/obj/empty_while_loop_body.zig
index 3a186f1a2b..01b2132518 100644
--- a/test/compile_errors/stage1/obj/empty_while_loop_body.zig
+++ b/test/compile_errors/stage1/obj/empty_while_loop_body.zig
@@ -2,6 +2,8 @@ export fn a() void {
     while(true);
 }
 
-// empty while loop body
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:16: error: expected block or assignment, found ';'
diff --git a/test/compile_errors/stage1/obj/endless_loop_in_function_evaluation.zig b/test/compile_errors/stage1/obj/endless_loop_in_function_evaluation.zig
index fa422ba588..302ee242e0 100644
--- a/test/compile_errors/stage1/obj/endless_loop_in_function_evaluation.zig
+++ b/test/compile_errors/stage1/obj/endless_loop_in_function_evaluation.zig
@@ -5,6 +5,8 @@ fn fibonacci(x: i32) i32 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(seventh_fib_number)); }
 
-// endless loop in function evaluation
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:21: error: evaluation exceeded 1000 backwards branches
diff --git a/test/compile_errors/stage1/obj/enum_field_value_references_enum.zig b/test/compile_errors/stage1/obj/enum_field_value_references_enum.zig
index 02dcfc1f9d..ebf32db5e0 100644
--- a/test/compile_errors/stage1/obj/enum_field_value_references_enum.zig
+++ b/test/compile_errors/stage1/obj/enum_field_value_references_enum.zig
@@ -8,6 +8,8 @@ export fn entry() void {
 }
 const D = 1;
 
-// enum field value references enum
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:17: error: enum 'Foo' depends on itself
diff --git a/test/compile_errors/stage1/obj/enum_in_field_count_range_but_not_matching_tag.zig b/test/compile_errors/stage1/obj/enum_in_field_count_range_but_not_matching_tag.zig
index dc90c467df..e783cbee52 100644
--- a/test/compile_errors/stage1/obj/enum_in_field_count_range_but_not_matching_tag.zig
+++ b/test/compile_errors/stage1/obj/enum_in_field_count_range_but_not_matching_tag.zig
@@ -7,7 +7,9 @@ export fn entry() void {
     _ = x;
 }
 
-// enum in field count range but not matching tag
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:13: error: enum 'Foo' has no tag matching integer value 0
 // tmp.zig:1:13: note: 'Foo' declared here
diff --git a/test/compile_errors/stage1/obj/enum_value_already_taken.zig b/test/compile_errors/stage1/obj/enum_value_already_taken.zig
index 9939553c41..60e88f0062 100644
--- a/test/compile_errors/stage1/obj/enum_value_already_taken.zig
+++ b/test/compile_errors/stage1/obj/enum_value_already_taken.zig
@@ -10,7 +10,9 @@ export fn entry() void {
     _ = x;
 }
 
-// enum value already taken
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:5: error: enum tag value 60 already taken
 // tmp.zig:4:5: note: other occurrence here
diff --git a/test/compile_errors/stage1/obj/enum_with_0_fields.zig b/test/compile_errors/stage1/obj/enum_with_0_fields.zig
index 10559d15b3..9ee18f51ca 100644
--- a/test/compile_errors/stage1/obj/enum_with_0_fields.zig
+++ b/test/compile_errors/stage1/obj/enum_with_0_fields.zig
@@ -1,5 +1,7 @@
 const Foo = enum {};
 
-// enum with 0 fields
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:13: error: enum declarations must have at least one tag
diff --git a/test/compile_errors/stage1/obj/enum_with_declarations_unavailable_for_reify_type.zig b/test/compile_errors/stage1/obj/enum_with_declarations_unavailable_for_reify_type.zig
index 4a27caab3d..ffe9a2a78a 100644
--- a/test/compile_errors/stage1/obj/enum_with_declarations_unavailable_for_reify_type.zig
+++ b/test/compile_errors/stage1/obj/enum_with_declarations_unavailable_for_reify_type.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     _ = @Type(@typeInfo(enum { foo, const bar = 1; }));
 }
 
-// enum with declarations unavailable for @Type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: Type.Enum.decls must be empty for @Type
diff --git a/test/compile_errors/stage1/obj/error_equality_but_sets_have_no_common_members.zig b/test/compile_errors/stage1/obj/error_equality_but_sets_have_no_common_members.zig
index 433f6d50e3..d42169b503 100644
--- a/test/compile_errors/stage1/obj/error_equality_but_sets_have_no_common_members.zig
+++ b/test/compile_errors/stage1/obj/error_equality_but_sets_have_no_common_members.zig
@@ -9,6 +9,8 @@ fn foo(x: Set1) void {
     }
 }
 
-// error equality but sets have no common members
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:11: error: error sets 'Set1' and 'Set2' have no common errors
diff --git a/test/compile_errors/stage1/obj/error_not_handled_in_switch.zig b/test/compile_errors/stage1/obj/error_not_handled_in_switch.zig
index a69c538eac..12ee35daef 100644
--- a/test/compile_errors/stage1/obj/error_not_handled_in_switch.zig
+++ b/test/compile_errors/stage1/obj/error_not_handled_in_switch.zig
@@ -12,7 +12,9 @@ fn foo(x: i32) !void {
     }
 }
 
-// error not handled in switch
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:26: error: error.Baz not handled in switch
 // tmp.zig:2:26: error: error.Bar not handled in switch
diff --git a/test/compile_errors/stage1/obj/error_note_for_function_parameter_incompatibility.zig b/test/compile_errors/stage1/obj/error_note_for_function_parameter_incompatibility.zig
index 5014d01a3d..edc421d8f4 100644
--- a/test/compile_errors/stage1/obj/error_note_for_function_parameter_incompatibility.zig
+++ b/test/compile_errors/stage1/obj/error_note_for_function_parameter_incompatibility.zig
@@ -4,7 +4,9 @@ export fn entry() void {
     do_the_thing(bar);
 }
 
-// error note for function parameter incompatibility
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:18: error: expected type 'fn(i32) void', found 'fn(bool) void
 // tmp.zig:4:18: note: parameter 0: 'bool' cannot cast into 'i32'
diff --git a/test/compile_errors/stage1/obj/error_union_operator_with_non_error_set_LHS.zig b/test/compile_errors/stage1/obj/error_union_operator_with_non_error_set_LHS.zig
index 40b5872fc8..785e42fb9b 100644
--- a/test/compile_errors/stage1/obj/error_union_operator_with_non_error_set_LHS.zig
+++ b/test/compile_errors/stage1/obj/error_union_operator_with_non_error_set_LHS.zig
@@ -4,6 +4,8 @@ comptime {
     _ = x;
 }
 
-// error union operator with non error set LHS
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: expected error set type, found type 'i32'
diff --git a/test/compile_errors/stage1/obj/error_when_evaluating_return_type.zig b/test/compile_errors/stage1/obj/error_when_evaluating_return_type.zig
index 60baa1c5b4..60731740b7 100644
--- a/test/compile_errors/stage1/obj/error_when_evaluating_return_type.zig
+++ b/test/compile_errors/stage1/obj/error_when_evaluating_return_type.zig
@@ -10,6 +10,8 @@ export fn entry() void {
     _ = rule_set;
 }
 
-// error when evaluating return type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:19: error: expected type 'i32', found 'type'
diff --git a/test/compile_errors/stage1/obj/exceeded_maximum_bit_width_of_integer.zig b/test/compile_errors/stage1/obj/exceeded_maximum_bit_width_of_integer.zig
index e1784de63e..2a3c795f81 100644
--- a/test/compile_errors/stage1/obj/exceeded_maximum_bit_width_of_integer.zig
+++ b/test/compile_errors/stage1/obj/exceeded_maximum_bit_width_of_integer.zig
@@ -7,7 +7,9 @@ export fn entry2() void {
     _ = x;
 }
 
-// exceeded maximum bit width of integer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: primitive integer type 'u65536' exceeds maximum bit width of 65535
 // tmp.zig:6:12: error: primitive integer type 'i65536' exceeds maximum bit width of 65535
diff --git a/test/compile_errors/stage1/obj/explicit_cast_float_literal_to_integer_when_there_is_a_fraction_component.zig b/test/compile_errors/stage1/obj/explicit_cast_float_literal_to_integer_when_there_is_a_fraction_component.zig
index eaa2be84c7..696fef57fa 100644
--- a/test/compile_errors/stage1/obj/explicit_cast_float_literal_to_integer_when_there_is_a_fraction_component.zig
+++ b/test/compile_errors/stage1/obj/explicit_cast_float_literal_to_integer_when_there_is_a_fraction_component.zig
@@ -2,6 +2,8 @@ export fn entry() i32 {
     return @as(i32, 12.34);
 }
 
-// explicit cast float literal to integer when there is a fraction component
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: fractional component prevents float value 12.340000 from being casted to type 'i32'
diff --git a/test/compile_errors/stage1/obj/explicit_error_set_cast_known_at_comptime_violates_error_sets.zig b/test/compile_errors/stage1/obj/explicit_error_set_cast_known_at_comptime_violates_error_sets.zig
index 68d78e0f92..4a41920107 100644
--- a/test/compile_errors/stage1/obj/explicit_error_set_cast_known_at_comptime_violates_error_sets.zig
+++ b/test/compile_errors/stage1/obj/explicit_error_set_cast_known_at_comptime_violates_error_sets.zig
@@ -6,6 +6,8 @@ comptime {
     _ = y;
 }
 
-// explicit error set cast known at comptime violates error sets
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:13: error: error.B not a member of error set 'Set2'
diff --git a/test/compile_errors/stage1/obj/explicitly_casting_non_tag_type_to_enum.zig b/test/compile_errors/stage1/obj/explicitly_casting_non_tag_type_to_enum.zig
index e7c4d5f5d9..1999fd70a7 100644
--- a/test/compile_errors/stage1/obj/explicitly_casting_non_tag_type_to_enum.zig
+++ b/test/compile_errors/stage1/obj/explicitly_casting_non_tag_type_to_enum.zig
@@ -11,6 +11,8 @@ export fn entry() void {
     _ = x;
 }
 
-// explicitly casting non tag type to enum
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:10:31: error: expected integer type, found 'f32'
diff --git a/test/compile_errors/stage1/obj/export_function_with_comptime_parameter.zig b/test/compile_errors/stage1/obj/export_function_with_comptime_parameter.zig
index 0f300f324b..ccfda1ba67 100644
--- a/test/compile_errors/stage1/obj/export_function_with_comptime_parameter.zig
+++ b/test/compile_errors/stage1/obj/export_function_with_comptime_parameter.zig
@@ -2,6 +2,8 @@ export fn foo(comptime x: i32, y: i32) i32{
     return x + y;
 }
 
-// export function with comptime parameter
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:15: error: comptime parameter not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/export_generic_function.zig b/test/compile_errors/stage1/obj/export_generic_function.zig
index 3fb4375ed4..9f6bcd4cf4 100644
--- a/test/compile_errors/stage1/obj/export_generic_function.zig
+++ b/test/compile_errors/stage1/obj/export_generic_function.zig
@@ -3,6 +3,8 @@ export fn foo(num: anytype) i32 {
     return 0;
 }
 
-// export generic function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:15: error: parameter of type 'anytype' not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/exported_async_function.zig b/test/compile_errors/stage1/obj/exported_async_function.zig
index 296a5950e9..b9ac591227 100644
--- a/test/compile_errors/stage1/obj/exported_async_function.zig
+++ b/test/compile_errors/stage1/obj/exported_async_function.zig
@@ -1,5 +1,7 @@
 export fn foo() callconv(.Async) void {}
 
-// exported async function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:1: error: exported function cannot be async
diff --git a/test/compile_errors/stage1/obj/exported_enum_without_explicit_integer_tag_type.zig b/test/compile_errors/stage1/obj/exported_enum_without_explicit_integer_tag_type.zig
index 3d6e63db43..c432bedd6b 100644
--- a/test/compile_errors/stage1/obj/exported_enum_without_explicit_integer_tag_type.zig
+++ b/test/compile_errors/stage1/obj/exported_enum_without_explicit_integer_tag_type.zig
@@ -7,7 +7,9 @@ comptime {
     @export(e, .{ .name = "e" });
 }
 
-// exported enum without explicit integer tag type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:13: error: exported enum without explicit integer tag type
 // tmp.zig:7:13: error: exported enum value without explicit integer tag type
diff --git a/test/compile_errors/stage1/obj/extern_function_pointer_mismatch.zig b/test/compile_errors/stage1/obj/extern_function_pointer_mismatch.zig
index f93a24db34..888b59a626 100644
--- a/test/compile_errors/stage1/obj/extern_function_pointer_mismatch.zig
+++ b/test/compile_errors/stage1/obj/extern_function_pointer_mismatch.zig
@@ -5,6 +5,8 @@ export fn c(x: i32) i32 {return x + 2;}
 
 export fn entry() usize { return @sizeOf(@TypeOf(fns)); }
 
-// extern function pointer mismatch
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:37: error: expected type 'fn(i32) i32', found 'fn(i32) callconv(.C) i32'
diff --git a/test/compile_errors/stage1/obj/extern_function_with_comptime_parameter.zig b/test/compile_errors/stage1/obj/extern_function_with_comptime_parameter.zig
index 3dfdfe663e..93e26b9543 100644
--- a/test/compile_errors/stage1/obj/extern_function_with_comptime_parameter.zig
+++ b/test/compile_errors/stage1/obj/extern_function_with_comptime_parameter.zig
@@ -4,6 +4,8 @@ fn f() i32 {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(f)); }
 
-// extern function with comptime parameter
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:15: error: comptime parameter not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/extern_struct_with_extern-compatible_but_inferred_integer_tag_type.zig b/test/compile_errors/stage1/obj/extern_struct_with_extern-compatible_but_inferred_integer_tag_type.zig
index e65c438da3..8f45a0e5dc 100644
--- a/test/compile_errors/stage1/obj/extern_struct_with_extern-compatible_but_inferred_integer_tag_type.zig
+++ b/test/compile_errors/stage1/obj/extern_struct_with_extern-compatible_but_inferred_integer_tag_type.zig
@@ -36,6 +36,8 @@ export fn entry() void {
     _ = s;
 }
 
-// extern struct with extern-compatible but inferred integer tag type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:31:5: error: extern structs cannot contain fields of type 'E'
diff --git a/test/compile_errors/stage1/obj/extern_struct_with_non-extern-compatible_integer_tag_type.zig b/test/compile_errors/stage1/obj/extern_struct_with_non-extern-compatible_integer_tag_type.zig
index 6d698ce8e3..aa508056a1 100644
--- a/test/compile_errors/stage1/obj/extern_struct_with_non-extern-compatible_integer_tag_type.zig
+++ b/test/compile_errors/stage1/obj/extern_struct_with_non-extern-compatible_integer_tag_type.zig
@@ -7,6 +7,8 @@ export fn entry() void {
     _ = s;
 }
 
-// extern struct with non-extern-compatible integer tag type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: extern structs cannot contain fields of type 'E'
diff --git a/test/compile_errors/stage1/obj/extern_union_field_missing_type.zig b/test/compile_errors/stage1/obj/extern_union_field_missing_type.zig
index 1287ce0159..9d8532f8a1 100644
--- a/test/compile_errors/stage1/obj/extern_union_field_missing_type.zig
+++ b/test/compile_errors/stage1/obj/extern_union_field_missing_type.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     _ = a;
 }
 
-// extern union field missing type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: union field missing type
diff --git a/test/compile_errors/stage1/obj/extern_union_given_enum_tag_type.zig b/test/compile_errors/stage1/obj/extern_union_given_enum_tag_type.zig
index 5b38d77eb6..86ac42cccf 100644
--- a/test/compile_errors/stage1/obj/extern_union_given_enum_tag_type.zig
+++ b/test/compile_errors/stage1/obj/extern_union_given_enum_tag_type.zig
@@ -13,6 +13,8 @@ export fn entry() void {
     _ = a;
 }
 
-// extern union given enum tag type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:30: error: extern union does not support enum tag type
diff --git a/test/compile_errors/stage1/obj/extern_variable_has_no_type.zig b/test/compile_errors/stage1/obj/extern_variable_has_no_type.zig
index f9d3952275..58d67f14e1 100644
--- a/test/compile_errors/stage1/obj/extern_variable_has_no_type.zig
+++ b/test/compile_errors/stage1/obj/extern_variable_has_no_type.zig
@@ -3,6 +3,8 @@ pub export fn entry() void {
     foo;
 }
 
-// extern variable has no type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:8: error: unable to infer variable type
diff --git a/test/compile_errors/stage1/obj/fieldParentPtr-bad_field_name.zig b/test/compile_errors/stage1/obj/fieldParentPtr-bad_field_name.zig
index 8c40641113..73022167f5 100644
--- a/test/compile_errors/stage1/obj/fieldParentPtr-bad_field_name.zig
+++ b/test/compile_errors/stage1/obj/fieldParentPtr-bad_field_name.zig
@@ -5,6 +5,8 @@ export fn foo(a: *i32) *Foo {
     return @fieldParentPtr(Foo, "a", a);
 }
 
-// @fieldParentPtr - bad field name
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:33: error: struct 'Foo' has no field 'a'
diff --git a/test/compile_errors/stage1/obj/fieldParentPtr-comptime_field_ptr_not_based_on_struct.zig b/test/compile_errors/stage1/obj/fieldParentPtr-comptime_field_ptr_not_based_on_struct.zig
index a8a5431352..9375f4639a 100644
--- a/test/compile_errors/stage1/obj/fieldParentPtr-comptime_field_ptr_not_based_on_struct.zig
+++ b/test/compile_errors/stage1/obj/fieldParentPtr-comptime_field_ptr_not_based_on_struct.zig
@@ -10,6 +10,8 @@ comptime {
     _ = another_foo_ptr;
 }
 
-// @fieldParentPtr - comptime field ptr not based on struct
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:9:55: error: pointer value not based on parent struct
diff --git a/test/compile_errors/stage1/obj/fieldParentPtr-comptime_wrong_field_index.zig b/test/compile_errors/stage1/obj/fieldParentPtr-comptime_wrong_field_index.zig
index 11bb7282fc..c322543dc0 100644
--- a/test/compile_errors/stage1/obj/fieldParentPtr-comptime_wrong_field_index.zig
+++ b/test/compile_errors/stage1/obj/fieldParentPtr-comptime_wrong_field_index.zig
@@ -9,6 +9,8 @@ comptime {
     _ = another_foo_ptr;
 }
 
-// @fieldParentPtr - comptime wrong field index
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:8:29: error: field 'b' has index 1 but pointer value is index 0 of struct 'Foo'
diff --git a/test/compile_errors/stage1/obj/fieldParentPtr-field_pointer_is_not_pointer.zig b/test/compile_errors/stage1/obj/fieldParentPtr-field_pointer_is_not_pointer.zig
index 8db9075b7b..71360e5681 100644
--- a/test/compile_errors/stage1/obj/fieldParentPtr-field_pointer_is_not_pointer.zig
+++ b/test/compile_errors/stage1/obj/fieldParentPtr-field_pointer_is_not_pointer.zig
@@ -5,6 +5,8 @@ export fn foo(a: i32) *Foo {
     return @fieldParentPtr(Foo, "a", a);
 }
 
-// @fieldParentPtr - field pointer is not pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:38: error: expected pointer, found 'i32'
diff --git a/test/compile_errors/stage1/obj/fieldParentPtr-non_struct.zig b/test/compile_errors/stage1/obj/fieldParentPtr-non_struct.zig
index 325fbe5b3b..16b9a9b332 100644
--- a/test/compile_errors/stage1/obj/fieldParentPtr-non_struct.zig
+++ b/test/compile_errors/stage1/obj/fieldParentPtr-non_struct.zig
@@ -3,6 +3,8 @@ export fn foo(a: *i32) *Foo {
     return @fieldParentPtr(Foo, "a", a);
 }
 
-// @fieldParentPtr - non struct
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:28: error: expected struct type, found 'i32'
diff --git a/test/compile_errors/stage1/obj/field_access_of_opaque_type.zig b/test/compile_errors/stage1/obj/field_access_of_opaque_type.zig
index 3354c0f471..963c89dafe 100644
--- a/test/compile_errors/stage1/obj/field_access_of_opaque_type.zig
+++ b/test/compile_errors/stage1/obj/field_access_of_opaque_type.zig
@@ -9,6 +9,8 @@ fn bar(x: *MyType) bool {
     return x.blah;
 }
 
-// field access of opaque type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:9:13: error: no member named 'blah' in opaque type 'MyType'
diff --git a/test/compile_errors/stage1/obj/field_access_of_slices.zig b/test/compile_errors/stage1/obj/field_access_of_slices.zig
index 3e79e1f0e0..45ca711367 100644
--- a/test/compile_errors/stage1/obj/field_access_of_slices.zig
+++ b/test/compile_errors/stage1/obj/field_access_of_slices.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     _ = info;
 }
 
-// field access of slices
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:32: error: type 'type' does not support field access
diff --git a/test/compile_errors/stage1/obj/field_access_of_unknown_length_pointer.zig b/test/compile_errors/stage1/obj/field_access_of_unknown_length_pointer.zig
index 7097c13605..f9a37cabcc 100644
--- a/test/compile_errors/stage1/obj/field_access_of_unknown_length_pointer.zig
+++ b/test/compile_errors/stage1/obj/field_access_of_unknown_length_pointer.zig
@@ -6,6 +6,8 @@ export fn entry(foo: [*]Foo) void {
     foo.a += 1;
 }
 
-// field access of unknown length pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:8: error: type '[*]Foo' does not support field access
diff --git a/test/compile_errors/stage1/obj/field_type_supplied_in_an_enum.zig b/test/compile_errors/stage1/obj/field_type_supplied_in_an_enum.zig
index cb308307bb..d6ba214c0c 100644
--- a/test/compile_errors/stage1/obj/field_type_supplied_in_an_enum.zig
+++ b/test/compile_errors/stage1/obj/field_type_supplied_in_an_enum.zig
@@ -4,7 +4,9 @@ const Letter = enum {
     C,
 };
 
-// field type supplied in an enum
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:8: error: enum fields do not have types
 // tmp.zig:1:16: note: consider 'union(enum)' here to make it a tagged union
diff --git a/test/compile_errors/stage1/obj/floatToInt_comptime_safety.zig b/test/compile_errors/stage1/obj/floatToInt_comptime_safety.zig
index e54047fb2f..1e5fa746a1 100644
--- a/test/compile_errors/stage1/obj/floatToInt_comptime_safety.zig
+++ b/test/compile_errors/stage1/obj/floatToInt_comptime_safety.zig
@@ -8,7 +8,9 @@ comptime {
     _ = @floatToInt(u8, @as(f32, 256.1));
 }
 
-// @floatToInt comptime safety
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:9: error: integer value '-129' cannot be stored in type 'i8'
 // tmp.zig:5:9: error: integer value '-1' cannot be stored in type 'u8'
diff --git a/test/compile_errors/stage1/obj/float_literal_too_large_error.zig b/test/compile_errors/stage1/obj/float_literal_too_large_error.zig
index d7be9874ac..c3865c3110 100644
--- a/test/compile_errors/stage1/obj/float_literal_too_large_error.zig
+++ b/test/compile_errors/stage1/obj/float_literal_too_large_error.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a;
 }
 
-// float literal too large error
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: float literal out of range of any type
diff --git a/test/compile_errors/stage1/obj/float_literal_too_small_error_denormal.zig b/test/compile_errors/stage1/obj/float_literal_too_small_error_denormal.zig
index 2657775be0..0b0bfee1de 100644
--- a/test/compile_errors/stage1/obj/float_literal_too_small_error_denormal.zig
+++ b/test/compile_errors/stage1/obj/float_literal_too_small_error_denormal.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a;
 }
 
-// float literal too small error (denormal)
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: float literal out of range of any type
diff --git a/test/compile_errors/stage1/obj/for_loop_body_expression_ignored.zig b/test/compile_errors/stage1/obj/for_loop_body_expression_ignored.zig
index fffbb13604..6281d4b276 100644
--- a/test/compile_errors/stage1/obj/for_loop_body_expression_ignored.zig
+++ b/test/compile_errors/stage1/obj/for_loop_body_expression_ignored.zig
@@ -10,7 +10,9 @@ export fn f2() void {
     _ = x;
 }
 
-// for loop body expression ignored
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:30: error: expression value is ignored
 // tmp.zig:9:30: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/frame_called_outside_of_function_definition.zig b/test/compile_errors/stage1/obj/frame_called_outside_of_function_definition.zig
index a76fff93a8..d140998152 100644
--- a/test/compile_errors/stage1/obj/frame_called_outside_of_function_definition.zig
+++ b/test/compile_errors/stage1/obj/frame_called_outside_of_function_definition.zig
@@ -4,6 +4,8 @@ export fn entry() bool {
     return handle_undef == handle_dummy;
 }
 
-// @frame() called outside of function definition
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:30: error: @frame() called outside of function definition
diff --git a/test/compile_errors/stage1/obj/frame_causes_function_to_be_async.zig b/test/compile_errors/stage1/obj/frame_causes_function_to_be_async.zig
index b45ff6965e..f8493b08b2 100644
--- a/test/compile_errors/stage1/obj/frame_causes_function_to_be_async.zig
+++ b/test/compile_errors/stage1/obj/frame_causes_function_to_be_async.zig
@@ -5,7 +5,9 @@ fn func() void {
     _ = @frame();
 }
 
-// @frame() causes function to be async
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:1: error: function with calling convention 'C' cannot be async
 // tmp.zig:5:9: note: @frame() causes function to be async
diff --git a/test/compile_errors/stage1/obj/function_alignment_non_power_of_2.zig b/test/compile_errors/stage1/obj/function_alignment_non_power_of_2.zig
index 949e11c115..617939a120 100644
--- a/test/compile_errors/stage1/obj/function_alignment_non_power_of_2.zig
+++ b/test/compile_errors/stage1/obj/function_alignment_non_power_of_2.zig
@@ -1,6 +1,8 @@
 extern fn foo() align(3) void;
 export fn entry() void { return foo(); }
 
-// function alignment non power of 2
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:23: error: alignment value 3 is not a power of 2
diff --git a/test/compile_errors/stage1/obj/function_call_assigned_to_incorrect_type.zig b/test/compile_errors/stage1/obj/function_call_assigned_to_incorrect_type.zig
index 4257b802c1..51bc82ffb8 100644
--- a/test/compile_errors/stage1/obj/function_call_assigned_to_incorrect_type.zig
+++ b/test/compile_errors/stage1/obj/function_call_assigned_to_incorrect_type.zig
@@ -6,6 +6,8 @@ fn concat() [16]f32 {
     return [1]f32{0}**16;
 }
 
-// function call assigned to incorrect type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:17: error: expected type '[4]f32', found '[16]f32'
diff --git a/test/compile_errors/stage1/obj/function_parameter_is_opaque.zig b/test/compile_errors/stage1/obj/function_parameter_is_opaque.zig
index 12e50ca59b..5b52370d86 100644
--- a/test/compile_errors/stage1/obj/function_parameter_is_opaque.zig
+++ b/test/compile_errors/stage1/obj/function_parameter_is_opaque.zig
@@ -19,7 +19,9 @@ export fn entry4() void {
     _ = bar;
 }
 
-// function parameter is opaque
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:28: error: parameter of opaque type 'FooType' not allowed
 // tmp.zig:8:28: error: parameter of type '@Type(.Null)' not allowed
diff --git a/test/compile_errors/stage1/obj/function_prototype_with_no_body.zig b/test/compile_errors/stage1/obj/function_prototype_with_no_body.zig
index 07597af015..7926faaa44 100644
--- a/test/compile_errors/stage1/obj/function_prototype_with_no_body.zig
+++ b/test/compile_errors/stage1/obj/function_prototype_with_no_body.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     foo();
 }
 
-// function prototype with no body
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:1: error: non-extern function has no body
diff --git a/test/compile_errors/stage1/obj/function_returning_opaque_type.zig b/test/compile_errors/stage1/obj/function_returning_opaque_type.zig
index 956a4ed224..e2c084b517 100644
--- a/test/compile_errors/stage1/obj/function_returning_opaque_type.zig
+++ b/test/compile_errors/stage1/obj/function_returning_opaque_type.zig
@@ -9,7 +9,9 @@ export fn baz() !@TypeOf(undefined) {
     return error.InvalidValue;
 }
 
-// function returning opaque type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:18: error: Opaque return type 'FooType' not allowed
 // tmp.zig:1:1: note: type declared here
diff --git a/test/compile_errors/stage1/obj/function_with_ccc_indirectly_calling_async_function.zig b/test/compile_errors/stage1/obj/function_with_ccc_indirectly_calling_async_function.zig
index 1ccf486be6..9fadb992b4 100644
--- a/test/compile_errors/stage1/obj/function_with_ccc_indirectly_calling_async_function.zig
+++ b/test/compile_errors/stage1/obj/function_with_ccc_indirectly_calling_async_function.zig
@@ -8,7 +8,9 @@ fn bar() void {
     suspend {}
 }
 
-// function with ccc indirectly calling async function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:1: error: function with calling convention 'C' cannot be async
 // tmp.zig:2:8: note: async function call here
diff --git a/test/compile_errors/stage1/obj/function_with_invalid_return_type.zig b/test/compile_errors/stage1/obj/function_with_invalid_return_type.zig
index acedbac7d1..897b298a3d 100644
--- a/test/compile_errors/stage1/obj/function_with_invalid_return_type.zig
+++ b/test/compile_errors/stage1/obj/function_with_invalid_return_type.zig
@@ -1,5 +1,7 @@
 export fn foo() boid {}
 
-// function with invalid return type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:17: error: use of undeclared identifier 'boid'
diff --git a/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_enum_parameter.zig b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_enum_parameter.zig
index 9c1913305d..8de26c08b8 100644
--- a/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_enum_parameter.zig
+++ b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_enum_parameter.zig
@@ -1,6 +1,8 @@
 const Foo = enum { A, B, C };
 export fn entry(foo: Foo) void { _ = foo; }
 
-// function with non-extern non-packed enum parameter
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:22: error: parameter of type 'Foo' not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_struct_parameter.zig b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_struct_parameter.zig
index eb2617f279..ecb4a36267 100644
--- a/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_struct_parameter.zig
+++ b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_struct_parameter.zig
@@ -5,6 +5,8 @@ const Foo = struct {
 };
 export fn entry(foo: Foo) void { _ = foo; }
 
-// function with non-extern non-packed struct parameter
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:22: error: parameter of type 'Foo' not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_union_parameter.zig b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_union_parameter.zig
index 662ffd349b..bfe2dc6cfa 100644
--- a/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_union_parameter.zig
+++ b/test/compile_errors/stage1/obj/function_with_non-extern_non-packed_union_parameter.zig
@@ -5,6 +5,8 @@ const Foo = union {
 };
 export fn entry(foo: Foo) void { _ = foo; }
 
-// function with non-extern non-packed union parameter
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:22: error: parameter of type 'Foo' not allowed in function with calling convention 'C'
diff --git a/test/compile_errors/stage1/obj/generic_fn_as_parameter_without_comptime_keyword.zig b/test/compile_errors/stage1/obj/generic_fn_as_parameter_without_comptime_keyword.zig
index fceea0961b..72e27e3a0d 100644
--- a/test/compile_errors/stage1/obj/generic_fn_as_parameter_without_comptime_keyword.zig
+++ b/test/compile_errors/stage1/obj/generic_fn_as_parameter_without_comptime_keyword.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     f(g);
 }
 
-// generic fn as parameter without comptime keyword
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:9: error: parameter of type 'fn(anytype) anytype' must be declared comptime
diff --git a/test/compile_errors/stage1/obj/generic_function_call_assigned_to_incorrect_type.zig b/test/compile_errors/stage1/obj/generic_function_call_assigned_to_incorrect_type.zig
index b48d5def57..72ed66b20a 100644
--- a/test/compile_errors/stage1/obj/generic_function_call_assigned_to_incorrect_type.zig
+++ b/test/compile_errors/stage1/obj/generic_function_call_assigned_to_incorrect_type.zig
@@ -6,6 +6,8 @@ fn myAlloc(comptime arg: type) anyerror!arg{
     unreachable;
 }
 
-// generic function call assigned to incorrect type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:18: error: expected type '[]i32', found 'anyerror!i32
diff --git a/test/compile_errors/stage1/obj/generic_function_instance_with_non-constant_expression.zig b/test/compile_errors/stage1/obj/generic_function_instance_with_non-constant_expression.zig
index 3698370b57..9cdd653766 100644
--- a/test/compile_errors/stage1/obj/generic_function_instance_with_non-constant_expression.zig
+++ b/test/compile_errors/stage1/obj/generic_function_instance_with_non-constant_expression.zig
@@ -5,6 +5,8 @@ fn test1(a: i32, b: i32) i32 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(test1)); }
 
-// generic function instance with non-constant expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:16: error: runtime value cannot be passed to comptime arg
diff --git a/test/compile_errors/stage1/obj/generic_function_returning_opaque_type.zig b/test/compile_errors/stage1/obj/generic_function_returning_opaque_type.zig
index c109a5ce7c..247c1a49bf 100644
--- a/test/compile_errors/stage1/obj/generic_function_returning_opaque_type.zig
+++ b/test/compile_errors/stage1/obj/generic_function_returning_opaque_type.zig
@@ -12,7 +12,9 @@ export fn baz() void {
     _ = generic(@TypeOf(undefined));
 }
 
-// generic function returning opaque type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:16: error: call to generic function with Opaque return type 'FooType' not allowed
 // tmp.zig:2:1: note: function declared here
diff --git a/test/compile_errors/stage1/obj/generic_function_where_return_type_is_self-referenced.zig b/test/compile_errors/stage1/obj/generic_function_where_return_type_is_self-referenced.zig
index 18237a5023..c8d31ec8df 100644
--- a/test/compile_errors/stage1/obj/generic_function_where_return_type_is_self-referenced.zig
+++ b/test/compile_errors/stage1/obj/generic_function_where_return_type_is_self-referenced.zig
@@ -8,6 +8,8 @@ export fn entry() void {
     _ = t;
 }
 
-// generic function where return type is self-referenced
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:29: error: evaluation exceeded 1000 backwards branches
diff --git a/test/compile_errors/stage1/obj/global_variable_alignment_non_power_of_2.zig b/test/compile_errors/stage1/obj/global_variable_alignment_non_power_of_2.zig
index a6c4ccaa98..f23f340b16 100644
--- a/test/compile_errors/stage1/obj/global_variable_alignment_non_power_of_2.zig
+++ b/test/compile_errors/stage1/obj/global_variable_alignment_non_power_of_2.zig
@@ -1,6 +1,8 @@
 const some_data: [100]u8 align(3) = undefined;
 export fn entry() usize { return @sizeOf(@TypeOf(some_data)); }
 
-// global variable alignment non power of 2
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:32: error: alignment value 3 is not a power of 2
diff --git a/test/compile_errors/stage1/obj/global_variable_initializer_must_be_constant_expression.zig b/test/compile_errors/stage1/obj/global_variable_initializer_must_be_constant_expression.zig
index 1d6c20f3af..d01e828da6 100644
--- a/test/compile_errors/stage1/obj/global_variable_initializer_must_be_constant_expression.zig
+++ b/test/compile_errors/stage1/obj/global_variable_initializer_must_be_constant_expression.zig
@@ -2,6 +2,8 @@ extern fn foo() i32;
 const x = foo();
 export fn entry() i32 { return x; }
 
-// global variable initializer must be constant expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:11: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/hasDecl_with_non-container.zig b/test/compile_errors/stage1/obj/hasDecl_with_non-container.zig
index 50f1231997..e9aeacdd4e 100644
--- a/test/compile_errors/stage1/obj/hasDecl_with_non-container.zig
+++ b/test/compile_errors/stage1/obj/hasDecl_with_non-container.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     _ = @hasDecl(i32, "hi");
 }
 
-// @hasDecl with non-container
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:18: error: expected struct, enum, or union; found 'i32'
diff --git a/test/compile_errors/stage1/obj/if_condition_is_bool_not_int.zig b/test/compile_errors/stage1/obj/if_condition_is_bool_not_int.zig
index e8b7c61417..53afb2792a 100644
--- a/test/compile_errors/stage1/obj/if_condition_is_bool_not_int.zig
+++ b/test/compile_errors/stage1/obj/if_condition_is_bool_not_int.zig
@@ -2,6 +2,8 @@ export fn f() void {
     if (0) {}
 }
 
-// if condition is bool, not int
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:9: error: expected type 'bool', found 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/ignored_assert-err-ok_return_value.zig b/test/compile_errors/stage1/obj/ignored_assert-err-ok_return_value.zig
index 53fbcaa8b5..4d45ae1304 100644
--- a/test/compile_errors/stage1/obj/ignored_assert-err-ok_return_value.zig
+++ b/test/compile_errors/stage1/obj/ignored_assert-err-ok_return_value.zig
@@ -3,6 +3,8 @@ export fn foo() void {
 }
 fn bar() anyerror!i32 { return 0; }
 
-// ignored assert-err-ok return value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:11: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/ignored_comptime_statement_value.zig b/test/compile_errors/stage1/obj/ignored_comptime_statement_value.zig
index 80925d6c84..0e82c9ae3e 100644
--- a/test/compile_errors/stage1/obj/ignored_comptime_statement_value.zig
+++ b/test/compile_errors/stage1/obj/ignored_comptime_statement_value.zig
@@ -2,6 +2,8 @@ export fn foo() void {
     comptime {1;}
 }
 
-// ignored comptime statement value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/ignored_comptime_value.zig b/test/compile_errors/stage1/obj/ignored_comptime_value.zig
index 375a5d242c..0306ea72ff 100644
--- a/test/compile_errors/stage1/obj/ignored_comptime_value.zig
+++ b/test/compile_errors/stage1/obj/ignored_comptime_value.zig
@@ -2,6 +2,8 @@ export fn foo() void {
     comptime 1;
 }
 
-// ignored comptime value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/ignored_deferred_function_call.zig b/test/compile_errors/stage1/obj/ignored_deferred_function_call.zig
index 58b85da985..41812bfda9 100644
--- a/test/compile_errors/stage1/obj/ignored_deferred_function_call.zig
+++ b/test/compile_errors/stage1/obj/ignored_deferred_function_call.zig
@@ -3,6 +3,8 @@ export fn foo() void {
 }
 fn bar() anyerror!i32 { return 0; }
 
-// ignored deferred function call
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:14: error: error is ignored. consider using `try`, `catch`, or `if`
diff --git a/test/compile_errors/stage1/obj/ignored_deferred_statement_value.zig b/test/compile_errors/stage1/obj/ignored_deferred_statement_value.zig
index effc79b039..1042c4f40a 100644
--- a/test/compile_errors/stage1/obj/ignored_deferred_statement_value.zig
+++ b/test/compile_errors/stage1/obj/ignored_deferred_statement_value.zig
@@ -2,6 +2,8 @@ export fn foo() void {
     defer {1;}
 }
 
-// ignored deferred statement value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:12: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/ignored_expression_in_while_continuation.zig b/test/compile_errors/stage1/obj/ignored_expression_in_while_continuation.zig
index fb205924e3..43f3713fc6 100644
--- a/test/compile_errors/stage1/obj/ignored_expression_in_while_continuation.zig
+++ b/test/compile_errors/stage1/obj/ignored_expression_in_while_continuation.zig
@@ -13,7 +13,9 @@ fn bad() anyerror!void {
     return error.Bad;
 }
 
-// ignored expression in while continuation
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:24: error: error is ignored. consider using `try`, `catch`, or `if`
 // tmp.zig:6:25: error: error is ignored. consider using `try`, `catch`, or `if`
diff --git a/test/compile_errors/stage1/obj/ignored_return_value.zig b/test/compile_errors/stage1/obj/ignored_return_value.zig
index 9c8cfa0aa4..b918523b37 100644
--- a/test/compile_errors/stage1/obj/ignored_return_value.zig
+++ b/test/compile_errors/stage1/obj/ignored_return_value.zig
@@ -3,6 +3,8 @@ export fn foo() void {
 }
 fn bar() i32 { return 0; }
 
-// ignored return value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:8: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/ignored_statement_value.zig b/test/compile_errors/stage1/obj/ignored_statement_value.zig
index 7855cf584b..a0e540a92b 100644
--- a/test/compile_errors/stage1/obj/ignored_statement_value.zig
+++ b/test/compile_errors/stage1/obj/ignored_statement_value.zig
@@ -2,6 +2,8 @@ export fn foo() void {
     1;
 }
 
-// ignored statement value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/illegal_comparison_of_types.zig b/test/compile_errors/stage1/obj/illegal_comparison_of_types.zig
index 462664a400..d04eaec3b5 100644
--- a/test/compile_errors/stage1/obj/illegal_comparison_of_types.zig
+++ b/test/compile_errors/stage1/obj/illegal_comparison_of_types.zig
@@ -12,7 +12,9 @@ fn bad_eql_2(a: *const EnumWithData, b: *const EnumWithData) bool {
 export fn entry1() usize { return @sizeOf(@TypeOf(bad_eql_1)); }
 export fn entry2() usize { return @sizeOf(@TypeOf(bad_eql_2)); }
 
-// illegal comparison of types
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:14: error: operator not allowed for type '[]u8'
 // tmp.zig:9:16: error: operator not allowed for type 'EnumWithData'
diff --git a/test/compile_errors/stage1/obj/implicit_cast_between_C_pointer_and_Zig_pointer-bad_const-align-child.zig b/test/compile_errors/stage1/obj/implicit_cast_between_C_pointer_and_Zig_pointer-bad_const-align-child.zig
index 1dd751f989..6ff155b591 100644
--- a/test/compile_errors/stage1/obj/implicit_cast_between_C_pointer_and_Zig_pointer-bad_const-align-child.zig
+++ b/test/compile_errors/stage1/obj/implicit_cast_between_C_pointer_and_Zig_pointer-bad_const-align-child.zig
@@ -29,7 +29,9 @@ export fn f() void {
     _ = x;
 }
 
-// implicit cast between C pointer and Zig pointer - bad const/align/child
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:27: error: cast increases pointer alignment
 // tmp.zig:8:18: error: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/implicit_cast_const_array_to_mutable_slice.zig b/test/compile_errors/stage1/obj/implicit_cast_const_array_to_mutable_slice.zig
index f38c2c9fe1..3f22cbed6b 100644
--- a/test/compile_errors/stage1/obj/implicit_cast_const_array_to_mutable_slice.zig
+++ b/test/compile_errors/stage1/obj/implicit_cast_const_array_to_mutable_slice.zig
@@ -4,7 +4,9 @@ export fn entry() void {
     _ = sliceA;
 }
 
-// implicit cast const array to mutable slice
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:27: error: cannot cast pointer to array literal to slice type '[]u8'
 // tmp.zig:3:27: note: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/implicit_cast_from_array_to_mutable_slice.zig b/test/compile_errors/stage1/obj/implicit_cast_from_array_to_mutable_slice.zig
index 60fc5baf1f..012555928c 100644
--- a/test/compile_errors/stage1/obj/implicit_cast_from_array_to_mutable_slice.zig
+++ b/test/compile_errors/stage1/obj/implicit_cast_from_array_to_mutable_slice.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     foo(global_array);
 }
 
-// implicit cast from array to mutable slice
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:9: error: expected type '[]i32', found '[10]i32'
diff --git a/test/compile_errors/stage1/obj/implicit_cast_from_f64_to_f32.zig b/test/compile_errors/stage1/obj/implicit_cast_from_f64_to_f32.zig
index d1d4417f34..f18a46b7f5 100644
--- a/test/compile_errors/stage1/obj/implicit_cast_from_f64_to_f32.zig
+++ b/test/compile_errors/stage1/obj/implicit_cast_from_f64_to_f32.zig
@@ -3,6 +3,8 @@ var y: f32 = x;
 
 export fn entry() usize { return @sizeOf(@TypeOf(y)); }
 
-// implicit cast from f64 to f32
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:14: error: expected type 'f32', found 'f64'
diff --git a/test/compile_errors/stage1/obj/implicit_cast_of_error_set_not_a_subset.zig b/test/compile_errors/stage1/obj/implicit_cast_of_error_set_not_a_subset.zig
index 9cfce6524f..5958a41639 100644
--- a/test/compile_errors/stage1/obj/implicit_cast_of_error_set_not_a_subset.zig
+++ b/test/compile_errors/stage1/obj/implicit_cast_of_error_set_not_a_subset.zig
@@ -8,7 +8,9 @@ fn foo(set1: Set1) void {
     _ = x;
 }
 
-// implicit cast of error set not a subset
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:19: error: expected type 'Set2', found 'Set1'
 // tmp.zig:1:23: note: 'error.B' not a member of destination error set
diff --git a/test/compile_errors/stage1/obj/implicit_casting_C_pointers_which_would_mess_up_null_semantics.zig b/test/compile_errors/stage1/obj/implicit_casting_C_pointers_which_would_mess_up_null_semantics.zig
index cdc35e3963..760bab41da 100644
--- a/test/compile_errors/stage1/obj/implicit_casting_C_pointers_which_would_mess_up_null_semantics.zig
+++ b/test/compile_errors/stage1/obj/implicit_casting_C_pointers_which_would_mess_up_null_semantics.zig
@@ -14,7 +14,9 @@ export fn entry2() void {
     _ = c_ptr;
 }
 
-// implicit casting C pointers which would mess up null semantics
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:24: error: expected type '*const [*]const u8', found '[*c]const [*c]const u8'
 // tmp.zig:6:24: note: pointer type child '[*c]const u8' cannot cast into pointer type child '[*]const u8'
diff --git a/test/compile_errors/stage1/obj/implicit_casting_null_c_pointer_to_zig_pointer.zig b/test/compile_errors/stage1/obj/implicit_casting_null_c_pointer_to_zig_pointer.zig
index 29dd6d06f9..0bd38d868b 100644
--- a/test/compile_errors/stage1/obj/implicit_casting_null_c_pointer_to_zig_pointer.zig
+++ b/test/compile_errors/stage1/obj/implicit_casting_null_c_pointer_to_zig_pointer.zig
@@ -4,6 +4,8 @@ comptime {
     _ = zig_ptr;
 }
 
-// implicit casting null c pointer to zig pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:24: error: null pointer casted to type '*u8'
diff --git a/test/compile_errors/stage1/obj/implicit_casting_too_big_integers_to_C_pointers.zig b/test/compile_errors/stage1/obj/implicit_casting_too_big_integers_to_C_pointers.zig
index 3deb817b76..f142540ff6 100644
--- a/test/compile_errors/stage1/obj/implicit_casting_too_big_integers_to_C_pointers.zig
+++ b/test/compile_errors/stage1/obj/implicit_casting_too_big_integers_to_C_pointers.zig
@@ -8,7 +8,9 @@ export fn b() void {
     _ = ptr;
 }
 
-// implicit casting too big integers to C pointers
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:33: error: integer value 18446744073709551617 cannot be coerced to type 'usize'
 // tmp.zig:7:23: error: integer type 'u65' too big for implicit @intToPtr to type '[*c]u8'
diff --git a/test/compile_errors/stage1/obj/implicit_casting_undefined_c_pointer_to_zig_pointer.zig b/test/compile_errors/stage1/obj/implicit_casting_undefined_c_pointer_to_zig_pointer.zig
index 4c19f57442..5554146fa5 100644
--- a/test/compile_errors/stage1/obj/implicit_casting_undefined_c_pointer_to_zig_pointer.zig
+++ b/test/compile_errors/stage1/obj/implicit_casting_undefined_c_pointer_to_zig_pointer.zig
@@ -4,6 +4,8 @@ comptime {
     _ = zig_ptr;
 }
 
-// implicit casting undefined c pointer to zig pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:24: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/implicit_dependency_on_libc.zig b/test/compile_errors/stage1/obj/implicit_dependency_on_libc.zig
new file mode 100644
index 0000000000..f069f78551
--- /dev/null
+++ b/test/compile_errors/stage1/obj/implicit_dependency_on_libc.zig
@@ -0,0 +1,11 @@
+extern "c" fn exit(u8) void;
+export fn entry() void {
+    exit(0);
+}
+
+// error
+// backend=stage1
+// target=native-linux
+// is_test=1
+//
+// tmp.zig:3:5: error: dependency on libc must be explicitly specified in the build command
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-block_expr.zig b/test/compile_errors/stage1/obj/implicit_semicolon-block_expr.zig
index bacd484c0c..a57da8ac0b 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-block_expr.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-block_expr.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - block expr
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:11: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-block_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-block_statement.zig
index dca8998ee6..2d9d850e75 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-block_statement.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-block_statement.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - block statement
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:9: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-comptime_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-comptime_expression.zig
index a3f679a59a..b4cd4de849 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-comptime_expression.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-comptime_expression.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - comptime expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:20: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-comptime_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-comptime_statement.zig
index 299b081e4b..3b83ef92eb 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-comptime_statement.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-comptime_statement.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - comptime statement
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:18: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-defer.zig b/test/compile_errors/stage1/obj/implicit_semicolon-defer.zig
index 7e58d930d6..0ded4fcf26 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-defer.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-defer.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - defer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:15: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-for_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-for_expression.zig
index 3e332ef189..964a48d30b 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-for_expression.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-for_expression.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - for expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:26: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-for_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-for_statement.zig
index 092c28889f..1320e4cc46 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-for_statement.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-for_statement.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - for statement
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:24: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_expression.zig
index fd55529a8f..40b1a33d78 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_expression.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_expression.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - if-else-if-else expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:45: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_statement.zig
index 3d59e38aa9..8444fe654d 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_statement.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if-else_statement.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - if-else-if-else statement
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:47: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_expression.zig
index 2caaad52b8..7466d64691 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_expression.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_expression.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - if-else-if expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:37: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_statement.zig
index 263aa36da3..34e116b3f7 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_statement.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else-if_statement.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - if-else-if statement
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:37: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else_expression.zig
index 12d993f6a7..3c1e0add62 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-if-else_expression.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else_expression.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - if-else expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:28: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if-else_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if-else_statement.zig
index 401fc46a51..e9c52fb6bb 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-if-else_statement.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if-else_statement.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - if-else statement
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:28: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if_expression.zig
index b3a81e9d36..2082588e0e 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-if_expression.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if_expression.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - if expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:20: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-if_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-if_statement.zig
index e543925d78..26cefd0237 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-if_statement.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-if_statement.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - if statement
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:18: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-test_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-test_expression.zig
index 1702bec048..c31f3520c1 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-test_expression.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-test_expression.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - test expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:26: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-test_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-test_statement.zig
index 8715ca9ac0..8abb1cbcb1 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-test_statement.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-test_statement.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - test statement
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:24: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_expression.zig
index b1a7bdbab8..4d3219eb66 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_expression.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_expression.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - while-continue expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:28: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_statement.zig
index 601f1f0318..c0b3370357 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_statement.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-while-continue_statement.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - while-continue statement
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:26: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-while_expression.zig b/test/compile_errors/stage1/obj/implicit_semicolon-while_expression.zig
index 9580889bd7..39f49319d5 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-while_expression.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-while_expression.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - while expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:23: error: expected ';' after statement
diff --git a/test/compile_errors/stage1/obj/implicit_semicolon-while_statement.zig b/test/compile_errors/stage1/obj/implicit_semicolon-while_statement.zig
index ab64dd991d..6c253ecf56 100644
--- a/test/compile_errors/stage1/obj/implicit_semicolon-while_statement.zig
+++ b/test/compile_errors/stage1/obj/implicit_semicolon-while_statement.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     var bad = {};
 }
 
-// implicit semicolon - while statement
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:18: error: expected ';' or 'else' after statement
diff --git a/test/compile_errors/stage1/obj/implicitly_casting_enum_to_tag_type.zig b/test/compile_errors/stage1/obj/implicitly_casting_enum_to_tag_type.zig
index 26806a3914..a40615f99b 100644
--- a/test/compile_errors/stage1/obj/implicitly_casting_enum_to_tag_type.zig
+++ b/test/compile_errors/stage1/obj/implicitly_casting_enum_to_tag_type.zig
@@ -10,6 +10,8 @@ export fn entry() void {
     _ = x;
 }
 
-// implicitly casting enum to tag type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:9:22: error: expected type 'u2', found 'Small'
diff --git a/test/compile_errors/stage1/obj/implicitly_increasing_pointer_alignment.zig b/test/compile_errors/stage1/obj/implicitly_increasing_pointer_alignment.zig
index 8f743a3b59..3743eef0b2 100644
--- a/test/compile_errors/stage1/obj/implicitly_increasing_pointer_alignment.zig
+++ b/test/compile_errors/stage1/obj/implicitly_increasing_pointer_alignment.zig
@@ -12,6 +12,8 @@ fn bar(x: *u32) void {
     x.* += 1;
 }
 
-// implicitly increasing pointer alignment
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:8:13: error: expected type '*u32', found '*align(1) u32'
diff --git a/test/compile_errors/stage1/obj/implicitly_increasing_slice_alignment.zig b/test/compile_errors/stage1/obj/implicitly_increasing_slice_alignment.zig
index c1d4ec2a0f..2e5c201b5d 100644
--- a/test/compile_errors/stage1/obj/implicitly_increasing_slice_alignment.zig
+++ b/test/compile_errors/stage1/obj/implicitly_increasing_slice_alignment.zig
@@ -13,7 +13,9 @@ fn bar(x: []u32) void {
     x[0] += 1;
 }
 
-// implicitly increasing slice alignment
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:9:26: error: cast increases pointer alignment
 // tmp.zig:9:26: note: '*align(1) u32' has alignment 1
diff --git a/test/compile_errors/stage1/obj/import_outside_package_path.zig b/test/compile_errors/stage1/obj/import_outside_package_path.zig
index 843de67b63..5a712c2e01 100644
--- a/test/compile_errors/stage1/obj/import_outside_package_path.zig
+++ b/test/compile_errors/stage1/obj/import_outside_package_path.zig
@@ -2,6 +2,8 @@ comptime{
     _ = @import("../a.zig");
 }
 
-// import outside package path
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:9: error: import of file outside package path: '../a.zig'
diff --git a/test/compile_errors/stage1/obj/incompatible_sentinels.zig b/test/compile_errors/stage1/obj/incompatible_sentinels.zig
new file mode 100644
index 0000000000..a292ae3d7c
--- /dev/null
+++ b/test/compile_errors/stage1/obj/incompatible_sentinels.zig
@@ -0,0 +1,29 @@
+// Note: One of the error messages here is backwards. It would be nice to fix, but that's not
+// going to stop me from merging this branch which fixes a bunch of other stuff.
+export fn entry1(ptr: [*:255]u8) [*:0]u8 {
+    return ptr;
+}
+export fn entry2(ptr: [*]u8) [*:0]u8 {
+    return ptr;
+}
+export fn entry3() void {
+    var array: [2:0]u8 = [_:255]u8{ 1, 2 };
+    _ = array;
+}
+export fn entry4() void {
+    var array: [2:0]u8 = [_]u8{ 1, 2 };
+    _ = array;
+}
+
+// error
+// backend=stage1
+// target=native
+//
+// tmp.zig:4:12: error: expected type '[*:0]u8', found '[*:255]u8'
+// tmp.zig:4:12: note: destination pointer requires a terminating '0' sentinel, but source pointer has a terminating '255' sentinel
+// tmp.zig:7:12: error: expected type '[*:0]u8', found '[*]u8'
+// tmp.zig:7:12: note: destination pointer requires a terminating '0' sentinel
+// tmp.zig:10:35: error: expected type '[2:255]u8', found '[2:0]u8'
+// tmp.zig:10:35: note: destination array requires a terminating '255' sentinel, but source array has a terminating '0' sentinel
+// tmp.zig:14:31: error: expected type '[2:0]u8', found '[2]u8'
+// tmp.zig:14:31: note: destination array requires a terminating '0' sentinel
diff --git a/test/compile_errors/stage1/obj/incorrect_return_type.zig b/test/compile_errors/stage1/obj/incorrect_return_type.zig
index 86c5f23dc3..b25e2a8ea4 100644
--- a/test/compile_errors/stage1/obj/incorrect_return_type.zig
+++ b/test/compile_errors/stage1/obj/incorrect_return_type.zig
@@ -14,6 +14,8 @@
      unreachable;
  }
 
-// incorrect return type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:8:16: error: expected type 'A', found 'B'
diff --git a/test/compile_errors/stage1/obj/increase_pointer_alignment_in_ptrCast.zig b/test/compile_errors/stage1/obj/increase_pointer_alignment_in_ptrCast.zig
index 01d8ac821e..f3f67ca4c6 100644
--- a/test/compile_errors/stage1/obj/increase_pointer_alignment_in_ptrCast.zig
+++ b/test/compile_errors/stage1/obj/increase_pointer_alignment_in_ptrCast.zig
@@ -4,7 +4,9 @@ export fn entry() u32 {
     return ptr.*;
 }
 
-// increase pointer alignment in @ptrCast
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:17: error: cast increases pointer alignment
 // tmp.zig:3:38: note: '*u8' has alignment 1
diff --git a/test/compile_errors/stage1/obj/indexing_a_undefined_slice_at_comptime.zig b/test/compile_errors/stage1/obj/indexing_a_undefined_slice_at_comptime.zig
index 4653d8668e..70b0c68658 100644
--- a/test/compile_errors/stage1/obj/indexing_a_undefined_slice_at_comptime.zig
+++ b/test/compile_errors/stage1/obj/indexing_a_undefined_slice_at_comptime.zig
@@ -3,6 +3,8 @@ comptime {
     slice[0] = 2;
 }
 
-// indexing a undefined slice at comptime
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:10: error: index 0 outside slice of size 0
diff --git a/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero.zig b/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero.zig
index 9066985de5..dfb2e7c1c3 100644
--- a/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero.zig
+++ b/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero.zig
@@ -4,6 +4,8 @@ export fn foo() void {
     _ = pointer;
 }
 
-// indexing an array of size zero
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:27: error: accessing a zero length array is not allowed
diff --git a/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero_with_runtime_index.zig b/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero_with_runtime_index.zig
index c5f3acb3cc..f50931312e 100644
--- a/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero_with_runtime_index.zig
+++ b/test/compile_errors/stage1/obj/indexing_an_array_of_size_zero_with_runtime_index.zig
@@ -5,6 +5,8 @@ export fn foo() void {
     _ = pointer;
 }
 
-// indexing an array of size zero with runtime index
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:27: error: accessing a zero length array is not allowed
diff --git a/test/compile_errors/stage1/obj/indexing_single-item_pointer.zig b/test/compile_errors/stage1/obj/indexing_single-item_pointer.zig
index e228083964..bc7951ec96 100644
--- a/test/compile_errors/stage1/obj/indexing_single-item_pointer.zig
+++ b/test/compile_errors/stage1/obj/indexing_single-item_pointer.zig
@@ -2,6 +2,8 @@ export fn entry(ptr: *i32) i32 {
     return ptr[1];
 }
 
-// indexing single-item pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: index of single-item pointer
diff --git a/test/compile_errors/stage1/obj/indirect_recursion_of_async_functions_detected.zig b/test/compile_errors/stage1/obj/indirect_recursion_of_async_functions_detected.zig
index 5765f7aae1..d845dc7930 100644
--- a/test/compile_errors/stage1/obj/indirect_recursion_of_async_functions_detected.zig
+++ b/test/compile_errors/stage1/obj/indirect_recursion_of_async_functions_detected.zig
@@ -27,7 +27,9 @@ fn rangeSumIndirect(x: i32) i32 {
     return child + 1;
 }
 
-// indirect recursion of async functions detected
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:8:1: error: '@Frame(rangeSum)' depends on itself
 // tmp.zig:15:33: note: when analyzing type '@Frame(rangeSum)' here
diff --git a/test/compile_errors/stage1/obj/indirect_struct_loop.zig b/test/compile_errors/stage1/obj/indirect_struct_loop.zig
index 903a1bda39..12214923d0 100644
--- a/test/compile_errors/stage1/obj/indirect_struct_loop.zig
+++ b/test/compile_errors/stage1/obj/indirect_struct_loop.zig
@@ -3,6 +3,8 @@ const B = struct { c : C, };
 const C = struct { a : A, };
 export fn entry() usize { return @sizeOf(A); }
 
-// indirect struct loop
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:11: error: struct 'A' depends on itself
diff --git a/test/compile_errors/stage1/obj/inferred_array_size_invalid_here.zig b/test/compile_errors/stage1/obj/inferred_array_size_invalid_here.zig
index a45b6aa027..2b2d944eab 100644
--- a/test/compile_errors/stage1/obj/inferred_array_size_invalid_here.zig
+++ b/test/compile_errors/stage1/obj/inferred_array_size_invalid_here.zig
@@ -8,7 +8,9 @@ export fn entry2() void {
     _ = a;
 }
 
-// inferred array size invalid here
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:16: error: unable to infer array size
 // tmp.zig:6:35: error: unable to infer array size
diff --git a/test/compile_errors/stage1/obj/inferring_error_set_of_function_pointer.zig b/test/compile_errors/stage1/obj/inferring_error_set_of_function_pointer.zig
index ead5afd248..b91242322d 100644
--- a/test/compile_errors/stage1/obj/inferring_error_set_of_function_pointer.zig
+++ b/test/compile_errors/stage1/obj/inferring_error_set_of_function_pointer.zig
@@ -2,6 +2,8 @@ comptime {
     const z: ?fn()!void = null;
 }
 
-// inferring error set of function pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:19: error: function prototype may not have inferred error set
diff --git a/test/compile_errors/stage1/obj/initializing_array_with_struct_syntax.zig b/test/compile_errors/stage1/obj/initializing_array_with_struct_syntax.zig
index 15412ac5ab..2884c6193e 100644
--- a/test/compile_errors/stage1/obj/initializing_array_with_struct_syntax.zig
+++ b/test/compile_errors/stage1/obj/initializing_array_with_struct_syntax.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// initializing array with struct syntax
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: initializing array with struct syntax
diff --git a/test/compile_errors/stage1/obj/instantiating_an_undefined_value_for_an_invalid_struct_that_contains_itself.zig b/test/compile_errors/stage1/obj/instantiating_an_undefined_value_for_an_invalid_struct_that_contains_itself.zig
index c39908c9b5..dd6909b1c2 100644
--- a/test/compile_errors/stage1/obj/instantiating_an_undefined_value_for_an_invalid_struct_that_contains_itself.zig
+++ b/test/compile_errors/stage1/obj/instantiating_an_undefined_value_for_an_invalid_struct_that_contains_itself.zig
@@ -8,6 +8,8 @@ export fn entry() usize {
     return @sizeOf(@TypeOf(foo.x));
 }
 
-// instantiating an undefined value for an invalid struct that contains itself
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:13: error: struct 'Foo' depends on itself
diff --git a/test/compile_errors/stage1/obj/intToPtr_with_misaligned_address.zig b/test/compile_errors/stage1/obj/intToPtr_with_misaligned_address.zig
index a04f318f0c..16b6bf565e 100644
--- a/test/compile_errors/stage1/obj/intToPtr_with_misaligned_address.zig
+++ b/test/compile_errors/stage1/obj/intToPtr_with_misaligned_address.zig
@@ -3,6 +3,8 @@ pub fn main() void {
     _ = y;
 }
 
-// intToPtr with misaligned address
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:13: error: pointer type '[*]align(4) u8' requires aligned address
diff --git a/test/compile_errors/stage1/obj/int_to_err_global_invalid_number.zig b/test/compile_errors/stage1/obj/int_to_err_global_invalid_number.zig
index 180da60ab2..5c078a751c 100644
--- a/test/compile_errors/stage1/obj/int_to_err_global_invalid_number.zig
+++ b/test/compile_errors/stage1/obj/int_to_err_global_invalid_number.zig
@@ -8,6 +8,8 @@ comptime {
     _ = y;
 }
 
-// int to err global invalid number
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:13: error: integer value 3 represents no error
diff --git a/test/compile_errors/stage1/obj/int_to_err_non_global_invalid_number.zig b/test/compile_errors/stage1/obj/int_to_err_non_global_invalid_number.zig
index a6627891d0..8c1e547746 100644
--- a/test/compile_errors/stage1/obj/int_to_err_non_global_invalid_number.zig
+++ b/test/compile_errors/stage1/obj/int_to_err_non_global_invalid_number.zig
@@ -12,6 +12,8 @@ comptime {
     _ = y;
 }
 
-// int to err non global invalid number
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:11:13: error: error.B not a member of error set 'Set2'
diff --git a/test/compile_errors/stage1/obj/int_to_ptr_of_0_bits.zig b/test/compile_errors/stage1/obj/int_to_ptr_of_0_bits.zig
index 7047600c1b..7b65cdf836 100644
--- a/test/compile_errors/stage1/obj/int_to_ptr_of_0_bits.zig
+++ b/test/compile_errors/stage1/obj/int_to_ptr_of_0_bits.zig
@@ -4,6 +4,8 @@ export fn foo() void {
     _ = y;
 }
 
-// int to ptr of 0 bits
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:30: error: type '*void' has 0 bits and cannot store information
diff --git a/test/compile_errors/stage1/obj/integer_cast_truncates_bits.zig b/test/compile_errors/stage1/obj/integer_cast_truncates_bits.zig
index a5c8036152..e8ef418624 100644
--- a/test/compile_errors/stage1/obj/integer_cast_truncates_bits.zig
+++ b/test/compile_errors/stage1/obj/integer_cast_truncates_bits.zig
@@ -19,7 +19,9 @@ export fn entry4() void {
     _ = unsigned;
 }
 
-// integer cast truncates bits
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:18: error: cast from 'u16' to 'u8' truncates bits
 // tmp.zig:8:22: error: integer value 300 cannot be coerced to type 'u8'
diff --git a/test/compile_errors/stage1/obj/integer_overflow_error.zig b/test/compile_errors/stage1/obj/integer_overflow_error.zig
index 568cc5034b..117d77ed93 100644
--- a/test/compile_errors/stage1/obj/integer_overflow_error.zig
+++ b/test/compile_errors/stage1/obj/integer_overflow_error.zig
@@ -1,6 +1,8 @@
 const x : u8 = 300;
 export fn entry() usize { return @sizeOf(@TypeOf(x)); }
 
-// integer overflow error
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:16: error: integer value 300 cannot be coerced to type 'u8'
diff --git a/test/compile_errors/stage1/obj/integer_underflow_error.zig b/test/compile_errors/stage1/obj/integer_underflow_error.zig
index 01171589d9..15bd4c472b 100644
--- a/test/compile_errors/stage1/obj/integer_underflow_error.zig
+++ b/test/compile_errors/stage1/obj/integer_underflow_error.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     _ = @intToPtr(*anyopaque, ~@as(usize, @import("std").math.maxInt(usize)) - 1);
 }
 
-// integer underflow error
+// error
+// backend=stage1
+// target=native
 //
 // :2:78: error: operation caused overflow
diff --git a/test/compile_errors/stage1/obj/invalid_break_expression.zig b/test/compile_errors/stage1/obj/invalid_break_expression.zig
index b6d27d6ea5..efb76a34f7 100644
--- a/test/compile_errors/stage1/obj/invalid_break_expression.zig
+++ b/test/compile_errors/stage1/obj/invalid_break_expression.zig
@@ -2,6 +2,8 @@ export fn f() void {
     break;
 }
 
-// invalid break expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: break expression outside loop
diff --git a/test/compile_errors/stage1/obj/invalid_builtin_fn.zig b/test/compile_errors/stage1/obj/invalid_builtin_fn.zig
index e10baf5965..8f0e3633bb 100644
--- a/test/compile_errors/stage1/obj/invalid_builtin_fn.zig
+++ b/test/compile_errors/stage1/obj/invalid_builtin_fn.zig
@@ -2,6 +2,8 @@ fn f() @bogus(foo) {
 }
 export fn entry() void { _ = f(); }
 
-// invalid builtin fn
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:8: error: invalid builtin function: '@bogus'
diff --git a/test/compile_errors/stage1/obj/invalid_cast_from_integral_type_to_enum.zig b/test/compile_errors/stage1/obj/invalid_cast_from_integral_type_to_enum.zig
index 476a4929ef..81dbd88e3b 100644
--- a/test/compile_errors/stage1/obj/invalid_cast_from_integral_type_to_enum.zig
+++ b/test/compile_errors/stage1/obj/invalid_cast_from_integral_type_to_enum.zig
@@ -10,6 +10,8 @@ fn foo(x: usize) void {
     }
 }
 
-// invalid cast from integral type to enum
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:9:10: error: expected type 'usize', found 'E'
diff --git a/test/compile_errors/stage1/obj/invalid_comparison_for_function_pointers.zig b/test/compile_errors/stage1/obj/invalid_comparison_for_function_pointers.zig
index f7827ed0e9..6d64b6cdaf 100644
--- a/test/compile_errors/stage1/obj/invalid_comparison_for_function_pointers.zig
+++ b/test/compile_errors/stage1/obj/invalid_comparison_for_function_pointers.zig
@@ -3,6 +3,8 @@ const invalid = foo > foo;
 
 export fn entry() usize { return @sizeOf(@TypeOf(invalid)); }
 
-// invalid comparison for function pointers
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: operator not allowed for type 'fn() void'
diff --git a/test/compile_errors/stage1/obj/invalid_continue_expression.zig b/test/compile_errors/stage1/obj/invalid_continue_expression.zig
index 9bd40c516a..00f3c5a3d5 100644
--- a/test/compile_errors/stage1/obj/invalid_continue_expression.zig
+++ b/test/compile_errors/stage1/obj/invalid_continue_expression.zig
@@ -2,6 +2,8 @@ export fn f() void {
     continue;
 }
 
-// invalid continue expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: continue expression outside loop
diff --git a/test/compile_errors/stage1/obj/invalid_deref_on_switch_target.zig b/test/compile_errors/stage1/obj/invalid_deref_on_switch_target.zig
index 47dc0a52c1..966a881543 100644
--- a/test/compile_errors/stage1/obj/invalid_deref_on_switch_target.zig
+++ b/test/compile_errors/stage1/obj/invalid_deref_on_switch_target.zig
@@ -10,6 +10,8 @@ const Tile = enum {
     Filled,
 };
 
-// invalid deref on switch target
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:17: error: attempt to dereference non-pointer type 'Tile'
diff --git a/test/compile_errors/stage1/obj/invalid_empty_unicode_escape.zig b/test/compile_errors/stage1/obj/invalid_empty_unicode_escape.zig
index d8853110a4..57dd16a63d 100644
--- a/test/compile_errors/stage1/obj/invalid_empty_unicode_escape.zig
+++ b/test/compile_errors/stage1/obj/invalid_empty_unicode_escape.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     const a = '\u{}';
 }
 
-// invalid empty unicode escape
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:19: error: empty unicode escape sequence
diff --git a/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-1.zig b/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-1.zig
index 4f13de2a62..431401c534 100644
--- a/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-1.zig
+++ b/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-1.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid exponent in float literal - 1
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:28: note: invalid byte: 'a'
diff --git a/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-2.zig b/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-2.zig
index f612d8c510..088b43546c 100644
--- a/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-2.zig
+++ b/test/compile_errors/stage1/obj/invalid_exponent_in_float_literal-2.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid exponent in float literal - 2
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:29: note: invalid byte: 'F'
diff --git a/test/compile_errors/stage1/obj/invalid_field_access_in_comptime.zig b/test/compile_errors/stage1/obj/invalid_field_access_in_comptime.zig
index e8395b5e7a..2630a704ed 100644
--- a/test/compile_errors/stage1/obj/invalid_field_access_in_comptime.zig
+++ b/test/compile_errors/stage1/obj/invalid_field_access_in_comptime.zig
@@ -1,5 +1,7 @@
 comptime { var x = doesnt_exist.whatever; _ = x; }
 
-// invalid field access in comptime
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:20: error: use of undeclared identifier 'doesnt_exist'
diff --git a/test/compile_errors/stage1/obj/invalid_field_in_struct_value_expression.zig b/test/compile_errors/stage1/obj/invalid_field_in_struct_value_expression.zig
index 41511f0d0a..fae0a90b51 100644
--- a/test/compile_errors/stage1/obj/invalid_field_in_struct_value_expression.zig
+++ b/test/compile_errors/stage1/obj/invalid_field_in_struct_value_expression.zig
@@ -12,6 +12,8 @@ export fn f() void {
     _ = a;
 }
 
-// invalid field in struct value expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:10:9: error: no member named 'foo' in struct 'A'
diff --git a/test/compile_errors/stage1/obj/invalid_float_literal.zig b/test/compile_errors/stage1/obj/invalid_float_literal.zig
index 5d9a26032f..709609a027 100644
--- a/test/compile_errors/stage1/obj/invalid_float_literal.zig
+++ b/test/compile_errors/stage1/obj/invalid_float_literal.zig
@@ -6,6 +6,8 @@ pub fn main() void {
     std.debug.assert(bad_float < 1.0);
 }
 
-// invalid float literal
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:29: error: expected expression, found '.'
diff --git a/test/compile_errors/stage1/obj/invalid_legacy_unicode_escape.zig b/test/compile_errors/stage1/obj/invalid_legacy_unicode_escape.zig
index 58e1390345..b81a814a60 100644
--- a/test/compile_errors/stage1/obj/invalid_legacy_unicode_escape.zig
+++ b/test/compile_errors/stage1/obj/invalid_legacy_unicode_escape.zig
@@ -2,7 +2,9 @@ export fn entry() void {
     const a = '\U1234';
 }
 
-// invalid legacy unicode escape
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:18: note: invalid byte: '1'
diff --git a/test/compile_errors/stage1/obj/invalid_maybe_type.zig b/test/compile_errors/stage1/obj/invalid_maybe_type.zig
index 9edc313526..cb075c36b7 100644
--- a/test/compile_errors/stage1/obj/invalid_maybe_type.zig
+++ b/test/compile_errors/stage1/obj/invalid_maybe_type.zig
@@ -2,6 +2,8 @@ export fn f() void {
     if (true) |x| { _ = x; }
 }
 
-// invalid maybe type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:9: error: expected optional type, found 'bool'
diff --git a/test/compile_errors/stage1/obj/invalid_member_of_builtin_enum.zig b/test/compile_errors/stage1/obj/invalid_member_of_builtin_enum.zig
index 32888ff84b..166ebfc782 100644
--- a/test/compile_errors/stage1/obj/invalid_member_of_builtin_enum.zig
+++ b/test/compile_errors/stage1/obj/invalid_member_of_builtin_enum.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     _ = foo;
 }
 
-// invalid member of builtin enum
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:29: error: container 'std.builtin.Mode' has no member called 'x86'
diff --git a/test/compile_errors/stage1/obj/invalid_multiple_dereferences.zig b/test/compile_errors/stage1/obj/invalid_multiple_dereferences.zig
index bdf5ccb228..f8a0b8013f 100644
--- a/test/compile_errors/stage1/obj/invalid_multiple_dereferences.zig
+++ b/test/compile_errors/stage1/obj/invalid_multiple_dereferences.zig
@@ -11,7 +11,9 @@ pub const Box = struct {
     field: i32,
 };
 
-// invalid multiple dereferences
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:8: error: attempt to dereference non-pointer type 'Box'
 // tmp.zig:8:13: error: attempt to dereference non-pointer type 'Box'
diff --git a/test/compile_errors/stage1/obj/invalid_optional_type_in_extern_struct.zig b/test/compile_errors/stage1/obj/invalid_optional_type_in_extern_struct.zig
index 17d9477abf..dc2e2690b8 100644
--- a/test/compile_errors/stage1/obj/invalid_optional_type_in_extern_struct.zig
+++ b/test/compile_errors/stage1/obj/invalid_optional_type_in_extern_struct.zig
@@ -3,6 +3,8 @@ const stroo = extern struct {
 };
 export fn testf(fluff: *stroo) void { _ = fluff; }
 
-// invalid optional type in extern struct
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: extern structs cannot contain fields of type '?[*c]u8'
diff --git a/test/compile_errors/stage1/obj/invalid_pointer_for_var_type.zig b/test/compile_errors/stage1/obj/invalid_pointer_for_var_type.zig
index 599aef54f2..caf8c70797 100644
--- a/test/compile_errors/stage1/obj/invalid_pointer_for_var_type.zig
+++ b/test/compile_errors/stage1/obj/invalid_pointer_for_var_type.zig
@@ -6,6 +6,8 @@ export fn f() void {
     }
 }
 
-// invalid pointer for var type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:13: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/invalid_pointer_syntax.zig b/test/compile_errors/stage1/obj/invalid_pointer_syntax.zig
index d4b68200b6..a4c823bde1 100644
--- a/test/compile_errors/stage1/obj/invalid_pointer_syntax.zig
+++ b/test/compile_errors/stage1/obj/invalid_pointer_syntax.zig
@@ -2,6 +2,8 @@ export fn foo() void {
     var guid: *:0 const u8 = undefined;
 }
 
-// invalid pointer syntax
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:16: error: expected type expression, found ':'
diff --git a/test/compile_errors/stage1/obj/invalid_shift_amount_error.zig b/test/compile_errors/stage1/obj/invalid_shift_amount_error.zig
index f4fe1cb2ff..7c84f2db38 100644
--- a/test/compile_errors/stage1/obj/invalid_shift_amount_error.zig
+++ b/test/compile_errors/stage1/obj/invalid_shift_amount_error.zig
@@ -4,6 +4,8 @@ fn f() u16 {
 }
 export fn entry() u16 { return f(); }
 
-// invalid shift amount error
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:17: error: integer value 8 cannot be coerced to type 'u3'
diff --git a/test/compile_errors/stage1/obj/invalid_struct_field.zig b/test/compile_errors/stage1/obj/invalid_struct_field.zig
index 2d85914907..6264125bca 100644
--- a/test/compile_errors/stage1/obj/invalid_struct_field.zig
+++ b/test/compile_errors/stage1/obj/invalid_struct_field.zig
@@ -11,7 +11,9 @@ export fn g() void {
     _ = y;
 }
 
-// invalid struct field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:6: error: no member named 'foo' in struct 'A'
 // tmp.zig:10:16: error: no member named 'bar' in struct 'A'
diff --git a/test/compile_errors/stage1/obj/invalid_suspend_in_exported_function.zig b/test/compile_errors/stage1/obj/invalid_suspend_in_exported_function.zig
index da808563a5..cfcbfba889 100644
--- a/test/compile_errors/stage1/obj/invalid_suspend_in_exported_function.zig
+++ b/test/compile_errors/stage1/obj/invalid_suspend_in_exported_function.zig
@@ -7,7 +7,9 @@ fn func() void {
     suspend {}
 }
 
-// invalid suspend in exported function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:1: error: function with calling convention 'C' cannot be async
 // tmp.zig:3:18: note: await here is a suspend point
diff --git a/test/compile_errors/stage1/obj/invalid_type.zig b/test/compile_errors/stage1/obj/invalid_type.zig
index 0307300517..8a2952e5f2 100644
--- a/test/compile_errors/stage1/obj/invalid_type.zig
+++ b/test/compile_errors/stage1/obj/invalid_type.zig
@@ -1,6 +1,8 @@
 fn a() bogus {}
 export fn entry() void { _ = a(); }
 
-// invalid type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:8: error: use of undeclared identifier 'bogus'
diff --git a/test/compile_errors/stage1/obj/invalid_type_used_in_array_type.zig b/test/compile_errors/stage1/obj/invalid_type_used_in_array_type.zig
index 26f0e6a7db..3a7bc4272c 100644
--- a/test/compile_errors/stage1/obj/invalid_type_used_in_array_type.zig
+++ b/test/compile_errors/stage1/obj/invalid_type_used_in_array_type.zig
@@ -7,6 +7,8 @@ export fn entry() void {
     _ = a;
 }
 
-// invalid type used in array type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:12: error: use of undeclared identifier 'SomeNonexistentType'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-1.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-1.zig
index 5cea540104..a3e2827f31 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-1.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-1.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 1
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:23: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-10.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-10.zig
index d789579a2b..7d33244483 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-10.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-10.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 10
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:25: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-11.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-11.zig
index 197b114090..fa4f5b8975 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-11.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-11.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 11
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:28: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-12.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-12.zig
index 1d25c9f4b4..2d36187711 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-12.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-12.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 12
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:23: note: invalid byte: 'x'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-13.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-13.zig
index c3de75ed32..21b044121c 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-13.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-13.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 13
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:23: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-14.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-14.zig
index cbb967e926..adb0727eba 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-14.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-14.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 14
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:27: note: invalid byte: 'p'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-2.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-2.zig
index e83c1b420b..16618c6a18 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-2.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-2.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 2
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:23: note: invalid byte: '.'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-3.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-3.zig
index f9ca8e0d7c..09e9e20b4b 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-3.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-3.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 3
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:25: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-4.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-4.zig
index 20e8d3692e..278ee35f5f 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-4.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-4.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 4
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:25: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-5.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-5.zig
index 3719f54e06..4912c15e50 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-5.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-5.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 5
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:26: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-6.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-6.zig
index 64a439538a..3386c860b9 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-6.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-6.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 6
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:26: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-7.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-7.zig
index 311b27339a..c0e57424a9 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-7.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-7.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 7
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:28: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-9.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-9.zig
index ecd1149f22..f7475332c1 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-9.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_float_literal-9.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in float literal - 9
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:23: note: invalid byte: '_'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-1.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-1.zig
index 47da090745..9cea337db4 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-1.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-1.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in int literal - 1
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:26: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-2.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-2.zig
index bb230daa9e..5f02479f2e 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-2.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-2.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in int literal - 2
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:28: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-3.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-3.zig
index 7808b6ee4d..aed4cb9068 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-3.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-3.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in int literal - 3
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:28: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-4.zig b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-4.zig
index 51ddb3d061..dce2771048 100644
--- a/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-4.zig
+++ b/test/compile_errors/stage1/obj/invalid_underscore_placement_in_int_literal-4.zig
@@ -3,7 +3,9 @@ fn main() void {
     _ = bad;
 }
 
-// invalid underscore placement in int literal - 4
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected expression, found 'invalid bytes'
 // tmp.zig:2:28: note: invalid byte: ';'
diff --git a/test/compile_errors/stage1/obj/invalid_union_field_access_in_comptime.zig b/test/compile_errors/stage1/obj/invalid_union_field_access_in_comptime.zig
index d570dca0b9..6d55f3b04f 100644
--- a/test/compile_errors/stage1/obj/invalid_union_field_access_in_comptime.zig
+++ b/test/compile_errors/stage1/obj/invalid_union_field_access_in_comptime.zig
@@ -8,6 +8,8 @@ comptime {
     _ = bar_val;
 }
 
-// invalid union field access in comptime
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:24: error: accessing union field 'Bar' while field 'Baz' is set
diff --git a/test/compile_errors/stage1/obj/issue_2032_compile_diagnostic_string_for_top_level_decl_type.zig b/test/compile_errors/stage1/obj/issue_2032_compile_diagnostic_string_for_top_level_decl_type.zig
index 9e353a4d38..c742cb9b77 100644
--- a/test/compile_errors/stage1/obj/issue_2032_compile_diagnostic_string_for_top_level_decl_type.zig
+++ b/test/compile_errors/stage1/obj/issue_2032_compile_diagnostic_string_for_top_level_decl_type.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = foo;
 }
 
-// compile diagnostic string for top level decl type (issue 2032)
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:27: error: type 'u32' does not support array initialization
diff --git a/test/compile_errors/stage1/obj/issue_2687_coerce_from_undefined_array_pointer_to_slice.zig b/test/compile_errors/stage1/obj/issue_2687_coerce_from_undefined_array_pointer_to_slice.zig
index 7c125b85ce..21fbb6b4fe 100644
--- a/test/compile_errors/stage1/obj/issue_2687_coerce_from_undefined_array_pointer_to_slice.zig
+++ b/test/compile_errors/stage1/obj/issue_2687_coerce_from_undefined_array_pointer_to_slice.zig
@@ -18,7 +18,9 @@ export fn foo3() void {
     }
 }
 
-// issue #2687: coerce from undefined array pointer to slice
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:19: error: use of undefined value here causes undefined behavior
 // tmp.zig:9:23: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/issue_3818_bitcast_from_parray-slice_to_u16.zig b/test/compile_errors/stage1/obj/issue_3818_bitcast_from_parray-slice_to_u16.zig
index 1c9d9cd1b1..cdc1def677 100644
--- a/test/compile_errors/stage1/obj/issue_3818_bitcast_from_parray-slice_to_u16.zig
+++ b/test/compile_errors/stage1/obj/issue_3818_bitcast_from_parray-slice_to_u16.zig
@@ -9,7 +9,9 @@ export fn foo2() void {
     _ = word;
 }
 
-// issue #3818: bitcast from parray/slice to u16
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:42: error: unable to @bitCast from pointer type '*[2]u8'
 // tmp.zig:8:32: error: destination type 'u16' has size 2 but source type '[]const u8' has size 16
diff --git a/test/compile_errors/stage1/obj/issue_4207_coerce_from_non-terminated-slice_to_terminated-pointer.zig b/test/compile_errors/stage1/obj/issue_4207_coerce_from_non-terminated-slice_to_terminated-pointer.zig
index bfb0595cce..d53f7731a0 100644
--- a/test/compile_errors/stage1/obj/issue_4207_coerce_from_non-terminated-slice_to_terminated-pointer.zig
+++ b/test/compile_errors/stage1/obj/issue_4207_coerce_from_non-terminated-slice_to_terminated-pointer.zig
@@ -3,7 +3,9 @@ export fn foo() [*:0]const u8 {
     return buffer[0..];
 }
 
-// issue #4207: coerce from non-terminated-slice to terminated-pointer
+// error
+// backend=stage1
+// target=native
 //
 // :3:18: error: expected type '[*:0]const u8', found '*[64]u8'
 // :3:18: note: destination pointer requires a terminating '0' sentinel
diff --git a/test/compile_errors/stage1/obj/issue_5221_invalid_struct_init_type_referenced_by_typeInfo_and_passed_into_function.zig b/test/compile_errors/stage1/obj/issue_5221_invalid_struct_init_type_referenced_by_typeInfo_and_passed_into_function.zig
index aa839bc72c..a622ceb44e 100644
--- a/test/compile_errors/stage1/obj/issue_5221_invalid_struct_init_type_referenced_by_typeInfo_and_passed_into_function.zig
+++ b/test/compile_errors/stage1/obj/issue_5221_invalid_struct_init_type_referenced_by_typeInfo_and_passed_into_function.zig
@@ -8,7 +8,9 @@ export fn foo() void {
     comptime ignore(@typeInfo(MyStruct).Struct.fields[0]);
 }
 
-// issue #5221: invalid struct init type referenced by @typeInfo and passed into function
+// error
+// backend=stage1
+// target=native
 //
 // :5:28: error: cannot cast pointer to array literal to slice type '[]u8'
 // :5:28: note: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/issue_5618_coercion_of_optional_anyopaque_to_anyopaque_must_fail.zig b/test/compile_errors/stage1/obj/issue_5618_coercion_of_optional_anyopaque_to_anyopaque_must_fail.zig
index daa8a91f40..9ba9910838 100644
--- a/test/compile_errors/stage1/obj/issue_5618_coercion_of_optional_anyopaque_to_anyopaque_must_fail.zig
+++ b/test/compile_errors/stage1/obj/issue_5618_coercion_of_optional_anyopaque_to_anyopaque_must_fail.zig
@@ -4,6 +4,8 @@ export fn foo() void {
     v = u;
 }
 
-// Issue #5618: coercion of ?*anyopaque to *anyopaque must fail.
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:9: error: cannot convert optional to payload type. consider using `.?`, `orelse`, or `if`. expected type '*anyopaque', found '?*anyopaque'
diff --git a/test/compile_errors/stage1/obj/issue_7810-comptime_slice-len_increment_beyond_bounds.zig b/test/compile_errors/stage1/obj/issue_7810-comptime_slice-len_increment_beyond_bounds.zig
index 533ac928b4..c8b2f0b09e 100644
--- a/test/compile_errors/stage1/obj/issue_7810-comptime_slice-len_increment_beyond_bounds.zig
+++ b/test/compile_errors/stage1/obj/issue_7810-comptime_slice-len_increment_beyond_bounds.zig
@@ -7,6 +7,8 @@ export fn foo_slice_len_increment_beyond_bounds() void {
     }
 }
 
-// comptime slice-len increment beyond bounds
+// error
+// backend=stage1
+// target=native
 //
 // :6:12: error: out of bounds slice
diff --git a/test/compile_errors/stage1/obj/issue_9346_return_outside_of_function_scope.zig b/test/compile_errors/stage1/obj/issue_9346_return_outside_of_function_scope.zig
index 6be92e2ee8..d12bff2b49 100644
--- a/test/compile_errors/stage1/obj/issue_9346_return_outside_of_function_scope.zig
+++ b/test/compile_errors/stage1/obj/issue_9346_return_outside_of_function_scope.zig
@@ -1,5 +1,7 @@
 pub const empty = return 1;
 
-// issue #9346: return outside of function scope
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:19: error: 'return' outside function scope
diff --git a/test/compile_errors/stage1/obj/labeled_break_not_found.zig b/test/compile_errors/stage1/obj/labeled_break_not_found.zig
index 0f4632d74d..754e1864b0 100644
--- a/test/compile_errors/stage1/obj/labeled_break_not_found.zig
+++ b/test/compile_errors/stage1/obj/labeled_break_not_found.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     }
 }
 
-// labeled break not found
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:20: error: label not found: 'outer'
diff --git a/test/compile_errors/stage1/obj/labeled_continue_not_found.zig b/test/compile_errors/stage1/obj/labeled_continue_not_found.zig
index 8f95a0fce1..b112e9b355 100644
--- a/test/compile_errors/stage1/obj/labeled_continue_not_found.zig
+++ b/test/compile_errors/stage1/obj/labeled_continue_not_found.zig
@@ -7,6 +7,8 @@ export fn entry() void {
     }
 }
 
-// labeled continue not found
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:23: error: label not found: 'outer'
diff --git a/test/compile_errors/stage1/obj/lazy_pointer_with_undefined_element_type.zig b/test/compile_errors/stage1/obj/lazy_pointer_with_undefined_element_type.zig
index 47b271a05e..733a3ca2dd 100644
--- a/test/compile_errors/stage1/obj/lazy_pointer_with_undefined_element_type.zig
+++ b/test/compile_errors/stage1/obj/lazy_pointer_with_undefined_element_type.zig
@@ -5,6 +5,8 @@ export fn foo() void {
     _ = I;
 }
 
-// lazy pointer with undefined element type
+// error
+// backend=stage1
+// target=native
 //
 // :3:28: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/libc_headers_note.zig b/test/compile_errors/stage1/obj/libc_headers_note.zig
new file mode 100644
index 0000000000..c8d9a9cbf3
--- /dev/null
+++ b/test/compile_errors/stage1/obj/libc_headers_note.zig
@@ -0,0 +1,12 @@
+const c = @cImport(@cInclude("stdio.h"));
+export fn entry() void {
+    _ = c.printf("hello, world!\n");
+}
+
+// error
+// backend=stage1
+// is_test=1
+// target=native-linux
+//
+// tmp.zig:1:11: error: C import failed
+// tmp.zig:1:11: note: libc headers not available; compilation does not link against libc
diff --git a/test/compile_errors/stage1/obj/load_too_many_bytes_from_comptime_reinterpreted_pointer.zig b/test/compile_errors/stage1/obj/load_too_many_bytes_from_comptime_reinterpreted_pointer.zig
index 2c5e1c7327..b275dbbeed 100644
--- a/test/compile_errors/stage1/obj/load_too_many_bytes_from_comptime_reinterpreted_pointer.zig
+++ b/test/compile_errors/stage1/obj/load_too_many_bytes_from_comptime_reinterpreted_pointer.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     _ = int_val;
 }
 
-// load too many bytes from comptime reinterpreted pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:28: error: attempt to read 8 bytes from pointer to f32 which is 4 bytes
diff --git a/test/compile_errors/stage1/obj/load_vector_pointer_with_unknown_runtime_index.zig b/test/compile_errors/stage1/obj/load_vector_pointer_with_unknown_runtime_index.zig
index fe28fa9102..8d703b09e6 100644
--- a/test/compile_errors/stage1/obj/load_vector_pointer_with_unknown_runtime_index.zig
+++ b/test/compile_errors/stage1/obj/load_vector_pointer_with_unknown_runtime_index.zig
@@ -10,6 +10,8 @@ fn loadv(ptr: anytype) i32 {
     return ptr.*;
 }
 
-// load vector pointer with unknown runtime index
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:10:12: error: unable to determine vector element index of type '*align(16:0:4:?) i32
diff --git a/test/compile_errors/stage1/obj/local_shadows_global_that_occurs_later.zig b/test/compile_errors/stage1/obj/local_shadows_global_that_occurs_later.zig
index 2265a34f18..4b9b58871f 100644
--- a/test/compile_errors/stage1/obj/local_shadows_global_that_occurs_later.zig
+++ b/test/compile_errors/stage1/obj/local_shadows_global_that_occurs_later.zig
@@ -4,7 +4,9 @@ pub fn main() void {
 }
 fn foo() void {}
 
-// local shadows global that occurs later
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:9: error: local shadows declaration of 'foo'
 // tmp.zig:5:1: note: declared here
diff --git a/test/compile_errors/stage1/obj/local_variable_redeclaration.zig b/test/compile_errors/stage1/obj/local_variable_redeclaration.zig
index 2367963edb..79eba0d428 100644
--- a/test/compile_errors/stage1/obj/local_variable_redeclaration.zig
+++ b/test/compile_errors/stage1/obj/local_variable_redeclaration.zig
@@ -3,7 +3,9 @@ export fn f() void {
     var a = 0;
 }
 
-// local variable redeclaration
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: redeclaration of local constant 'a'
 // tmp.zig:2:11: note: previous declaration here
diff --git a/test/compile_errors/stage1/obj/local_variable_redeclares_parameter.zig b/test/compile_errors/stage1/obj/local_variable_redeclares_parameter.zig
index e624e14e31..854ef080c5 100644
--- a/test/compile_errors/stage1/obj/local_variable_redeclares_parameter.zig
+++ b/test/compile_errors/stage1/obj/local_variable_redeclares_parameter.zig
@@ -3,7 +3,9 @@ fn f(a : i32) void {
 }
 export fn entry() void { f(1); }
 
-// local variable redeclares parameter
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:11: error: redeclaration of function parameter 'a'
 // tmp.zig:1:6: note: previous declaration here
diff --git a/test/compile_errors/stage1/obj/local_variable_shadowing_global.zig b/test/compile_errors/stage1/obj/local_variable_shadowing_global.zig
index c824cb3df7..3f1af3a4cb 100644
--- a/test/compile_errors/stage1/obj/local_variable_shadowing_global.zig
+++ b/test/compile_errors/stage1/obj/local_variable_shadowing_global.zig
@@ -6,7 +6,9 @@ export fn entry() void {
     _ = Bar;
 }
 
-// local variable shadowing global
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:9: error: local shadows declaration of 'Bar'
 // tmp.zig:2:1: note: declared here
diff --git a/test/compile_errors/stage1/obj/locally_shadowing_a_primitive_type.zig b/test/compile_errors/stage1/obj/locally_shadowing_a_primitive_type.zig
index 457cea418c..e66a2082ea 100644
--- a/test/compile_errors/stage1/obj/locally_shadowing_a_primitive_type.zig
+++ b/test/compile_errors/stage1/obj/locally_shadowing_a_primitive_type.zig
@@ -4,7 +4,9 @@ export fn foo() void {
     _ = a;
 }
 
-// locally shadowing a primitive type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:11: error: name shadows primitive 'u8'
 // tmp.zig:2:11: note: consider using @"u8" to disambiguate
diff --git a/test/compile_errors/stage1/obj/main_function_with_bogus_args_type.zig b/test/compile_errors/stage1/obj/main_function_with_bogus_args_type.zig
index 3954c4b846..5808ab90ec 100644
--- a/test/compile_errors/stage1/obj/main_function_with_bogus_args_type.zig
+++ b/test/compile_errors/stage1/obj/main_function_with_bogus_args_type.zig
@@ -1,5 +1,7 @@
 pub fn main(args: [][]bogus) !void {_ = args;}
 
-// main function with bogus args type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:23: error: use of undeclared identifier 'bogus'
diff --git a/test/compile_errors/stage1/obj/method_call_with_first_arg_type_primitive.zig b/test/compile_errors/stage1/obj/method_call_with_first_arg_type_primitive.zig
index 9763e84fba..316be2d899 100644
--- a/test/compile_errors/stage1/obj/method_call_with_first_arg_type_primitive.zig
+++ b/test/compile_errors/stage1/obj/method_call_with_first_arg_type_primitive.zig
@@ -14,6 +14,8 @@ export fn f() void {
     derp.init();
 }
 
-// method call with first arg type primitive
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:14:5: error: expected type 'i32', found 'Foo'
diff --git a/test/compile_errors/stage1/obj/method_call_with_first_arg_type_wrong_container.zig b/test/compile_errors/stage1/obj/method_call_with_first_arg_type_wrong_container.zig
index ccbc7e32e3..04ab89fb6c 100644
--- a/test/compile_errors/stage1/obj/method_call_with_first_arg_type_wrong_container.zig
+++ b/test/compile_errors/stage1/obj/method_call_with_first_arg_type_wrong_container.zig
@@ -23,6 +23,8 @@ export fn foo() void {
     x.init();
 }
 
-// method call with first arg type wrong container
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:23:5: error: expected type '*Allocator', found '*List'
diff --git a/test/compile_errors/stage1/obj/missing_boolean_switch_value.zig b/test/compile_errors/stage1/obj/missing_boolean_switch_value.zig
index 63a12c4e6f..2e9d4b48ce 100644
--- a/test/compile_errors/stage1/obj/missing_boolean_switch_value.zig
+++ b/test/compile_errors/stage1/obj/missing_boolean_switch_value.zig
@@ -11,7 +11,9 @@ comptime {
     _ = x;
 }
 
-// missing boolean switch value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: switch must handle all possibilities
 // tmp.zig:8:15: error: switch must handle all possibilities
diff --git a/test/compile_errors/stage1/obj/missing_const_in_slice_with_nested_array_type.zig b/test/compile_errors/stage1/obj/missing_const_in_slice_with_nested_array_type.zig
index 4f552284d7..af9d690d43 100644
--- a/test/compile_errors/stage1/obj/missing_const_in_slice_with_nested_array_type.zig
+++ b/test/compile_errors/stage1/obj/missing_const_in_slice_with_nested_array_type.zig
@@ -11,6 +11,8 @@ export fn entry() void {
     _ = geo_data;
 }
 
-// missing const in slice with nested array type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:30: error: array literal requires address-of operator (&) to coerce to slice type '[][2]f32'
diff --git a/test/compile_errors/stage1/obj/missing_else_clause.zig b/test/compile_errors/stage1/obj/missing_else_clause.zig
index 28adfd21e8..f331933437 100644
--- a/test/compile_errors/stage1/obj/missing_else_clause.zig
+++ b/test/compile_errors/stage1/obj/missing_else_clause.zig
@@ -8,7 +8,9 @@ fn g(b: bool) void {
 }
 export fn entry() void { f(true); g(true); }
 
-// missing else clause
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected type 'i32', found 'void'
 // tmp.zig:6:15: error: incompatible types: 'i32' and 'void'
diff --git a/test/compile_errors/stage1/obj/missing_field_in_struct_value_expression.zig b/test/compile_errors/stage1/obj/missing_field_in_struct_value_expression.zig
index bea4021a5a..9eb4246c8f 100644
--- a/test/compile_errors/stage1/obj/missing_field_in_struct_value_expression.zig
+++ b/test/compile_errors/stage1/obj/missing_field_in_struct_value_expression.zig
@@ -13,6 +13,8 @@ export fn f() void {
     _ = a;
 }
 
-// missing field in struct value expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:9:17: error: missing field: 'x'
diff --git a/test/compile_errors/stage1/obj/missing_function_call_param.zig b/test/compile_errors/stage1/obj/missing_function_call_param.zig
index 45a7259814..9e08ed7140 100644
--- a/test/compile_errors/stage1/obj/missing_function_call_param.zig
+++ b/test/compile_errors/stage1/obj/missing_function_call_param.zig
@@ -24,6 +24,8 @@ fn f(foo: *const Foo, index: usize) void {
 
 export fn entry() usize { return @sizeOf(@TypeOf(f)); }
 
-// missing function call param
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:20:34: error: expected 1 argument(s), found 0
diff --git a/test/compile_errors/stage1/obj/missing_function_name.zig b/test/compile_errors/stage1/obj/missing_function_name.zig
index 194f5eb6a8..cd9a3ca7ee 100644
--- a/test/compile_errors/stage1/obj/missing_function_name.zig
+++ b/test/compile_errors/stage1/obj/missing_function_name.zig
@@ -1,6 +1,8 @@
 fn () void {}
 export fn entry() usize { return @sizeOf(@TypeOf(f)); }
 
-// missing function name
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:1: error: missing function name
diff --git a/test/compile_errors/stage1/obj/missing_param_name.zig b/test/compile_errors/stage1/obj/missing_param_name.zig
index 1c379dd245..febb16d2ca 100644
--- a/test/compile_errors/stage1/obj/missing_param_name.zig
+++ b/test/compile_errors/stage1/obj/missing_param_name.zig
@@ -1,6 +1,8 @@
 fn f(i32) void {}
 export fn entry() usize { return @sizeOf(@TypeOf(f)); }
 
-// missing param name
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:6: error: missing parameter name
diff --git a/test/compile_errors/stage1/obj/missing_parameter_name_of_generic_function.zig b/test/compile_errors/stage1/obj/missing_parameter_name_of_generic_function.zig
index 3a3ccd28a8..041c0c4a47 100644
--- a/test/compile_errors/stage1/obj/missing_parameter_name_of_generic_function.zig
+++ b/test/compile_errors/stage1/obj/missing_parameter_name_of_generic_function.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     dump(a);
 }
 
-// missing parameter name of generic function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:9: error: missing parameter name
diff --git a/test/compile_errors/stage1/obj/missing_result_type_for_phi_node.zig b/test/compile_errors/stage1/obj/missing_result_type_for_phi_node.zig
index 3ef99e0859..33bc1d0d9c 100644
--- a/test/compile_errors/stage1/obj/missing_result_type_for_phi_node.zig
+++ b/test/compile_errors/stage1/obj/missing_result_type_for_phi_node.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     foo() catch 0;
 }
 
-// missing result type for phi node
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:17: error: integer value 0 cannot be coerced to type 'void'
diff --git a/test/compile_errors/stage1/obj/misspelled_type_with_pointer_only_reference.zig b/test/compile_errors/stage1/obj/misspelled_type_with_pointer_only_reference.zig
index 6b3f647c02..8e2055a829 100644
--- a/test/compile_errors/stage1/obj/misspelled_type_with_pointer_only_reference.zig
+++ b/test/compile_errors/stage1/obj/misspelled_type_with_pointer_only_reference.zig
@@ -30,6 +30,8 @@ fn foo() void {
 
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// misspelled type with pointer only reference
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:16: error: use of undeclared identifier 'JsonList'
diff --git a/test/compile_errors/stage1/obj/mod_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/mod_assign_on_undefined_value.zig
index 3165970d44..c127e256e8 100644
--- a/test/compile_errors/stage1/obj/mod_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/mod_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a %= a;
 }
 
-// mod assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/mod_on_undefined_value.zig b/test/compile_errors/stage1/obj/mod_on_undefined_value.zig
index 3b33f6ed82..8bd7774a46 100644
--- a/test/compile_errors/stage1/obj/mod_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/mod_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a % a;
 }
 
-// mod on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/mul_overflow_in_function_evaluation.zig b/test/compile_errors/stage1/obj/mul_overflow_in_function_evaluation.zig
index ea8eea5ab5..8209b33f94 100644
--- a/test/compile_errors/stage1/obj/mul_overflow_in_function_evaluation.zig
+++ b/test/compile_errors/stage1/obj/mul_overflow_in_function_evaluation.zig
@@ -5,6 +5,8 @@ fn mul(a: u16, b: u16) u16 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(y)); }
 
-// mul overflow in function evaluation
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:14: error: operation caused overflow
diff --git a/test/compile_errors/stage1/obj/mult_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/mult_assign_on_undefined_value.zig
index 4617c5f62b..04040b9756 100644
--- a/test/compile_errors/stage1/obj/mult_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/mult_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a *= a;
 }
 
-// mult assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/mult_on_undefined_value.zig b/test/compile_errors/stage1/obj/mult_on_undefined_value.zig
index 836b59e19d..0dcd2b02f2 100644
--- a/test/compile_errors/stage1/obj/mult_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/mult_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a * a;
 }
 
-// mult on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/mult_wrap_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/mult_wrap_assign_on_undefined_value.zig
index 38bd38bf79..db54af9f0b 100644
--- a/test/compile_errors/stage1/obj/mult_wrap_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/mult_wrap_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a *%= a;
 }
 
-// mult wrap assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/mult_wrap_on_undefined_value.zig b/test/compile_errors/stage1/obj/mult_wrap_on_undefined_value.zig
index 0c0ca46540..9ad09f7e93 100644
--- a/test/compile_errors/stage1/obj/mult_wrap_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/mult_wrap_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a *% a;
 }
 
-// mult wrap on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/multiple_function_definitions.zig b/test/compile_errors/stage1/obj/multiple_function_definitions.zig
index c4efefce8d..baa4a43048 100644
--- a/test/compile_errors/stage1/obj/multiple_function_definitions.zig
+++ b/test/compile_errors/stage1/obj/multiple_function_definitions.zig
@@ -2,7 +2,9 @@ fn a() void {}
 fn a() void {}
 export fn entry() void { a(); }
 
-// multiple function definitions
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:1: error: redeclaration of 'a'
 // tmp.zig:1:1: note: other declaration here
diff --git a/test/compile_errors/stage1/obj/negate_on_undefined_value.zig b/test/compile_errors/stage1/obj/negate_on_undefined_value.zig
index 7e7e392104..f8d5f6128d 100644
--- a/test/compile_errors/stage1/obj/negate_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/negate_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = -a;
 }
 
-// negate on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:10: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/negate_wrap_on_undefined_value.zig b/test/compile_errors/stage1/obj/negate_wrap_on_undefined_value.zig
index f49c6eac34..4ca32956de 100644
--- a/test/compile_errors/stage1/obj/negate_wrap_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/negate_wrap_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = -%a;
 }
 
-// negate wrap on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:11: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/negation_overflow_in_function_evaluation.zig b/test/compile_errors/stage1/obj/negation_overflow_in_function_evaluation.zig
index ca69b6fb5d..f83e0de6ae 100644
--- a/test/compile_errors/stage1/obj/negation_overflow_in_function_evaluation.zig
+++ b/test/compile_errors/stage1/obj/negation_overflow_in_function_evaluation.zig
@@ -5,6 +5,8 @@ fn neg(x: i8) i8 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(y)); }
 
-// negation overflow in function evaluation
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:12: error: negation caused overflow
diff --git a/test/compile_errors/stage1/obj/nested_error_set_mismatch.zig b/test/compile_errors/stage1/obj/nested_error_set_mismatch.zig
index 6c677049df..cd037635bc 100644
--- a/test/compile_errors/stage1/obj/nested_error_set_mismatch.zig
+++ b/test/compile_errors/stage1/obj/nested_error_set_mismatch.zig
@@ -10,7 +10,9 @@ fn foo() ?OtherError!i32 {
     return null;
 }
 
-// nested error set mismatch
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:34: error: expected type '?NextError!i32', found '?OtherError!i32'
 // tmp.zig:5:34: note: optional type child 'OtherError!i32' cannot cast into optional type child 'NextError!i32'
diff --git a/test/compile_errors/stage1/obj/no_else_prong_on_switch_on_global_error_set.zig b/test/compile_errors/stage1/obj/no_else_prong_on_switch_on_global_error_set.zig
index 7de3f189f0..39f4399caf 100644
--- a/test/compile_errors/stage1/obj/no_else_prong_on_switch_on_global_error_set.zig
+++ b/test/compile_errors/stage1/obj/no_else_prong_on_switch_on_global_error_set.zig
@@ -7,6 +7,8 @@ fn foo(a: anyerror) void {
     }
 }
 
-// no else prong on switch on global error set
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:5: error: else prong required when switching on type 'anyerror'
diff --git a/test/compile_errors/stage1/obj/noalias_on_non_pointer_param.zig b/test/compile_errors/stage1/obj/noalias_on_non_pointer_param.zig
index 3419dc8c99..ca84aca73f 100644
--- a/test/compile_errors/stage1/obj/noalias_on_non_pointer_param.zig
+++ b/test/compile_errors/stage1/obj/noalias_on_non_pointer_param.zig
@@ -1,6 +1,8 @@
 fn f(noalias x: i32) void { _ = x; }
 export fn entry() void { f(1234); }
 
-// noalias on non pointer param
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:6: error: noalias on non-pointer parameter
diff --git a/test/compile_errors/stage1/obj/non-async_function_pointer_eventually_is_inferred_to_become_async.zig b/test/compile_errors/stage1/obj/non-async_function_pointer_eventually_is_inferred_to_become_async.zig
index 93391daaef..e18b420028 100644
--- a/test/compile_errors/stage1/obj/non-async_function_pointer_eventually_is_inferred_to_become_async.zig
+++ b/test/compile_errors/stage1/obj/non-async_function_pointer_eventually_is_inferred_to_become_async.zig
@@ -6,7 +6,9 @@ fn func() void {
     suspend {}
 }
 
-// non-async function pointer eventually is inferred to become async
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:1: error: 'func' cannot be async
 // tmp.zig:3:20: note: required to be non-async here
diff --git a/test/compile_errors/stage1/obj/non-const_expression_function_call_with_struct_return_value_outside_function.zig b/test/compile_errors/stage1/obj/non-const_expression_function_call_with_struct_return_value_outside_function.zig
index d6a463e71f..25e33d1435 100644
--- a/test/compile_errors/stage1/obj/non-const_expression_function_call_with_struct_return_value_outside_function.zig
+++ b/test/compile_errors/stage1/obj/non-const_expression_function_call_with_struct_return_value_outside_function.zig
@@ -10,6 +10,8 @@ var global_side_effect = false;
 
 export fn entry() usize { return @sizeOf(@TypeOf(a)); }
 
-// non-const expression function call with struct return value outside function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:26: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/non-const_expression_in_struct_literal_outside_function.zig b/test/compile_errors/stage1/obj/non-const_expression_in_struct_literal_outside_function.zig
index ef7b1309c3..46b94f1f96 100644
--- a/test/compile_errors/stage1/obj/non-const_expression_in_struct_literal_outside_function.zig
+++ b/test/compile_errors/stage1/obj/non-const_expression_in_struct_literal_outside_function.zig
@@ -6,6 +6,8 @@ extern fn get_it() i32;
 
 export fn entry() usize { return @sizeOf(@TypeOf(a)); }
 
-// non-const expression in struct literal outside function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:21: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/non-const_switch_number_literal.zig b/test/compile_errors/stage1/obj/non-const_switch_number_literal.zig
index aecaa7dcb6..005db548ed 100644
--- a/test/compile_errors/stage1/obj/non-const_switch_number_literal.zig
+++ b/test/compile_errors/stage1/obj/non-const_switch_number_literal.zig
@@ -10,6 +10,8 @@ fn bar() i32 {
     return 2;
 }
 
-// non-const switch number literal
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:17: error: cannot store runtime value in type 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/non-const_variables_of_things_that_require_const_variables.zig b/test/compile_errors/stage1/obj/non-const_variables_of_things_that_require_const_variables.zig
index 0598e04e4b..73ef29aa54 100644
--- a/test/compile_errors/stage1/obj/non-const_variables_of_things_that_require_const_variables.zig
+++ b/test/compile_errors/stage1/obj/non-const_variables_of_things_that_require_const_variables.zig
@@ -35,7 +35,9 @@ const Foo = struct {
     fn bar(self: *const Foo) void {_ = self;}
 };
 
-// non-const variables of things that require const variables
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:4: error: variable of type '*const comptime_int' must be const or comptime
 // tmp.zig:6:4: error: variable of type '@Type(.Undefined)' must be const or comptime
diff --git a/test/compile_errors/stage1/obj/non-enum_tag_type_passed_to_union.zig b/test/compile_errors/stage1/obj/non-enum_tag_type_passed_to_union.zig
index 3161f16b28..e188a3f819 100644
--- a/test/compile_errors/stage1/obj/non-enum_tag_type_passed_to_union.zig
+++ b/test/compile_errors/stage1/obj/non-enum_tag_type_passed_to_union.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     _ = x;
 }
 
-// non-enum tag type passed to union
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:19: error: expected enum tag type, found 'u32'
diff --git a/test/compile_errors/stage1/obj/non-extern_function_with_var_args.zig b/test/compile_errors/stage1/obj/non-extern_function_with_var_args.zig
index 02b99383c1..9e5463d451 100644
--- a/test/compile_errors/stage1/obj/non-extern_function_with_var_args.zig
+++ b/test/compile_errors/stage1/obj/non-extern_function_with_var_args.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     foo();
 }
 
-// non-extern function with var args
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:14: error: expected type expression, found '...'
diff --git a/test/compile_errors/stage1/obj/non-inline_for_loop_on_a_type_that_requires_comptime.zig b/test/compile_errors/stage1/obj/non-inline_for_loop_on_a_type_that_requires_comptime.zig
index 9190e7cea8..d2b4e28ea6 100644
--- a/test/compile_errors/stage1/obj/non-inline_for_loop_on_a_type_that_requires_comptime.zig
+++ b/test/compile_errors/stage1/obj/non-inline_for_loop_on_a_type_that_requires_comptime.zig
@@ -7,6 +7,8 @@ export fn entry() void {
     for (xx) |f| { _ = f;}
 }
 
-// non-inline for loop on a type that requires comptime
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:5: error: values of type 'Foo' must be comptime known, but index value is runtime known
diff --git a/test/compile_errors/stage1/obj/non-integer_tag_type_to_automatic_union_enum.zig b/test/compile_errors/stage1/obj/non-integer_tag_type_to_automatic_union_enum.zig
index a84ca36f6c..41d5e14163 100644
--- a/test/compile_errors/stage1/obj/non-integer_tag_type_to_automatic_union_enum.zig
+++ b/test/compile_errors/stage1/obj/non-integer_tag_type_to_automatic_union_enum.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     _ = x;
 }
 
-// non-integer tag type to automatic union enum
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:24: error: expected integer tag type, found 'f32'
diff --git a/test/compile_errors/stage1/obj/non-pure_function_returns_type.zig b/test/compile_errors/stage1/obj/non-pure_function_returns_type.zig
index 0925207b9f..9d1c642273 100644
--- a/test/compile_errors/stage1/obj/non-pure_function_returns_type.zig
+++ b/test/compile_errors/stage1/obj/non-pure_function_returns_type.zig
@@ -17,6 +17,8 @@ export fn function_with_return_type_type() void {
     list.length = 10;
 }
 
-// non-pure function returns type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:7: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/non_async_function_pointer_passed_to_asyncCall.zig b/test/compile_errors/stage1/obj/non_async_function_pointer_passed_to_asyncCall.zig
index 73c4fd96ca..d8ab4087e0 100644
--- a/test/compile_errors/stage1/obj/non_async_function_pointer_passed_to_asyncCall.zig
+++ b/test/compile_errors/stage1/obj/non_async_function_pointer_passed_to_asyncCall.zig
@@ -5,6 +5,8 @@ export fn entry() void {
 }
 fn afunc() void { }
 
-// non async function pointer passed to @asyncCall
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:32: error: expected async function, found 'fn() void'
diff --git a/test/compile_errors/stage1/obj/non_compile_time_array_concatenation.zig b/test/compile_errors/stage1/obj/non_compile_time_array_concatenation.zig
index c119cc03f7..e70e6daf32 100644
--- a/test/compile_errors/stage1/obj/non_compile_time_array_concatenation.zig
+++ b/test/compile_errors/stage1/obj/non_compile_time_array_concatenation.zig
@@ -4,6 +4,8 @@ fn f() []u8 {
 var s: [10]u8 = undefined;
 export fn entry() usize { return @sizeOf(@TypeOf(f)); }
 
-// non compile time array concatenation
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:12: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/non_constant_expression_in_array_size.zig b/test/compile_errors/stage1/obj/non_constant_expression_in_array_size.zig
index fe28921265..a0cb8e8ce1 100644
--- a/test/compile_errors/stage1/obj/non_constant_expression_in_array_size.zig
+++ b/test/compile_errors/stage1/obj/non_constant_expression_in_array_size.zig
@@ -6,7 +6,9 @@ fn get() usize { return global_var; }
 
 export fn entry() usize { return @sizeOf(@TypeOf(Foo)); }
 
-// non constant expression in array size
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:25: error: cannot store runtime value in compile time variable
 // tmp.zig:2:12: note: called from here
diff --git a/test/compile_errors/stage1/obj/non_error_sets_used_in_merge_error_sets_operator.zig b/test/compile_errors/stage1/obj/non_error_sets_used_in_merge_error_sets_operator.zig
index c600bea8b0..fc3431820c 100644
--- a/test/compile_errors/stage1/obj/non_error_sets_used_in_merge_error_sets_operator.zig
+++ b/test/compile_errors/stage1/obj/non_error_sets_used_in_merge_error_sets_operator.zig
@@ -7,7 +7,9 @@ export fn bar() void {
     _ = Errors;
 }
 
-// non error sets used in merge error sets operator
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:20: error: expected error set type, found type 'u8'
 // tmp.zig:2:23: note: `||` merges error sets; `or` performs boolean OR
diff --git a/test/compile_errors/stage1/obj/non_float_passed_to_floatToInt.zig b/test/compile_errors/stage1/obj/non_float_passed_to_floatToInt.zig
index cad658ba5a..c91025906a 100644
--- a/test/compile_errors/stage1/obj/non_float_passed_to_floatToInt.zig
+++ b/test/compile_errors/stage1/obj/non_float_passed_to_floatToInt.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// non float passed to @floatToInt
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:32: error: expected float type, found 'i32'
diff --git a/test/compile_errors/stage1/obj/non_int_passed_to_intToFloat.zig b/test/compile_errors/stage1/obj/non_int_passed_to_intToFloat.zig
index 8b985c2b0b..8f6acca51e 100644
--- a/test/compile_errors/stage1/obj/non_int_passed_to_intToFloat.zig
+++ b/test/compile_errors/stage1/obj/non_int_passed_to_intToFloat.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// non int passed to @intToFloat
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:32: error: expected int type, found 'comptime_float'
diff --git a/test/compile_errors/stage1/obj/non_pointer_given_to_ptrToInt.zig b/test/compile_errors/stage1/obj/non_pointer_given_to_ptrToInt.zig
index 1d4d3087da..7824c0f796 100644
--- a/test/compile_errors/stage1/obj/non_pointer_given_to_ptrToInt.zig
+++ b/test/compile_errors/stage1/obj/non_pointer_given_to_ptrToInt.zig
@@ -2,6 +2,8 @@ export fn entry(x: i32) usize {
     return @ptrToInt(x);
 }
 
-// non pointer given to @ptrToInt
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:22: error: expected pointer, found 'i32'
diff --git a/test/compile_errors/stage1/obj/normal_string_with_newline.zig b/test/compile_errors/stage1/obj/normal_string_with_newline.zig
index dafc041744..f6c1d1b1b9 100644
--- a/test/compile_errors/stage1/obj/normal_string_with_newline.zig
+++ b/test/compile_errors/stage1/obj/normal_string_with_newline.zig
@@ -1,7 +1,9 @@
 const foo = "a
 b";
 
-// normal string with newline
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:13: error: expected expression, found 'invalid bytes'
 // tmp.zig:1:15: note: invalid byte: '\n'
diff --git a/test/compile_errors/stage1/obj/offsetOf-bad_field_name.zig b/test/compile_errors/stage1/obj/offsetOf-bad_field_name.zig
index 3b301e2677..de5b82c22c 100644
--- a/test/compile_errors/stage1/obj/offsetOf-bad_field_name.zig
+++ b/test/compile_errors/stage1/obj/offsetOf-bad_field_name.zig
@@ -5,6 +5,8 @@ export fn foo() usize {
     return @offsetOf(Foo, "a",);
 }
 
-// @offsetOf - bad field name
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:27: error: struct 'Foo' has no field 'a'
diff --git a/test/compile_errors/stage1/obj/offsetOf-non_struct.zig b/test/compile_errors/stage1/obj/offsetOf-non_struct.zig
index 173119407a..15275b827b 100644
--- a/test/compile_errors/stage1/obj/offsetOf-non_struct.zig
+++ b/test/compile_errors/stage1/obj/offsetOf-non_struct.zig
@@ -3,6 +3,8 @@ export fn foo() usize {
     return @offsetOf(Foo, "a",);
 }
 
-// @offsetOf - non struct
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:22: error: expected struct type, found 'i32'
diff --git a/test/compile_errors/stage1/obj/only_equality_binary_operator_allowed_for_error_sets.zig b/test/compile_errors/stage1/obj/only_equality_binary_operator_allowed_for_error_sets.zig
index 58512ef2a6..ff9c4d18a2 100644
--- a/test/compile_errors/stage1/obj/only_equality_binary_operator_allowed_for_error_sets.zig
+++ b/test/compile_errors/stage1/obj/only_equality_binary_operator_allowed_for_error_sets.zig
@@ -3,6 +3,8 @@ comptime {
     _ = z;
 }
 
-// only equality binary operator allowed for error sets
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:23: error: operator not allowed for errors
diff --git a/test/compile_errors/stage1/obj/opaque_type_with_field.zig b/test/compile_errors/stage1/obj/opaque_type_with_field.zig
index 748d5c0736..0b87091de9 100644
--- a/test/compile_errors/stage1/obj/opaque_type_with_field.zig
+++ b/test/compile_errors/stage1/obj/opaque_type_with_field.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     _ = foo;
 }
 
-// opaque type with field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:25: error: opaque types cannot have fields
diff --git a/test/compile_errors/stage1/obj/optional_pointer_to_void_in_extern_struct.zig b/test/compile_errors/stage1/obj/optional_pointer_to_void_in_extern_struct.zig
index f4ebb577d9..552f672ad6 100644
--- a/test/compile_errors/stage1/obj/optional_pointer_to_void_in_extern_struct.zig
+++ b/test/compile_errors/stage1/obj/optional_pointer_to_void_in_extern_struct.zig
@@ -7,6 +7,8 @@ const Bar = extern struct {
 };
 export fn entry(bar: *Bar) void {_ = bar;}
 
-// optional pointer to void in extern struct
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: extern structs cannot contain fields of type '?*const void'
diff --git a/test/compile_errors/stage1/obj/or_on_undefined_value.zig b/test/compile_errors/stage1/obj/or_on_undefined_value.zig
index ac636bff9e..11e6c41dea 100644
--- a/test/compile_errors/stage1/obj/or_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/or_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a or a;
 }
 
-// or on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/orelse_on_undefined_value.zig b/test/compile_errors/stage1/obj/orelse_on_undefined_value.zig
index 28e7c4b425..3042c208eb 100644
--- a/test/compile_errors/stage1/obj/orelse_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/orelse_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a orelse false;
 }
 
-// orelse on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:11: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/out_of_range_comptime_int_passed_to_floatToInt.zig b/test/compile_errors/stage1/obj/out_of_range_comptime_int_passed_to_floatToInt.zig
index 581bb58ffd..1a1dd541c9 100644
--- a/test/compile_errors/stage1/obj/out_of_range_comptime_int_passed_to_floatToInt.zig
+++ b/test/compile_errors/stage1/obj/out_of_range_comptime_int_passed_to_floatToInt.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// out of range comptime_int passed to @floatToInt
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:31: error: integer value 200 cannot be coerced to type 'i8'
diff --git a/test/compile_errors/stage1/obj/overflow_in_enum_value_allocation.zig b/test/compile_errors/stage1/obj/overflow_in_enum_value_allocation.zig
index 5c737e06a2..c5dc5c1dcf 100644
--- a/test/compile_errors/stage1/obj/overflow_in_enum_value_allocation.zig
+++ b/test/compile_errors/stage1/obj/overflow_in_enum_value_allocation.zig
@@ -7,6 +7,8 @@ pub fn main() void {
   _ = y;
 }
 
-// overflow in enum value allocation
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: enumeration value 256 too large for type 'u8'
diff --git a/test/compile_errors/stage1/obj/packed_union_given_enum_tag_type.zig b/test/compile_errors/stage1/obj/packed_union_given_enum_tag_type.zig
index f0bc445295..fceb7af65c 100644
--- a/test/compile_errors/stage1/obj/packed_union_given_enum_tag_type.zig
+++ b/test/compile_errors/stage1/obj/packed_union_given_enum_tag_type.zig
@@ -13,6 +13,8 @@ export fn entry() void {
     _ = a;
 }
 
-// packed union given enum tag type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:30: error: packed union does not support enum tag type
diff --git a/test/compile_errors/stage1/obj/packed_union_with_automatic_layout_field.zig b/test/compile_errors/stage1/obj/packed_union_with_automatic_layout_field.zig
index 4450531a5b..99ad6ca306 100644
--- a/test/compile_errors/stage1/obj/packed_union_with_automatic_layout_field.zig
+++ b/test/compile_errors/stage1/obj/packed_union_with_automatic_layout_field.zig
@@ -11,6 +11,8 @@ export fn entry() void {
     _ = a;
 }
 
-// packed union with automatic layout field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:5: error: non-packed, non-extern struct 'Foo' not allowed in packed union; no guaranteed in-memory representation
diff --git a/test/compile_errors/stage1/obj/panic_called_at_compile_time.zig b/test/compile_errors/stage1/obj/panic_called_at_compile_time.zig
index 6dd32cdf59..7c16932913 100644
--- a/test/compile_errors/stage1/obj/panic_called_at_compile_time.zig
+++ b/test/compile_errors/stage1/obj/panic_called_at_compile_time.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     }
 }
 
-// @panic called at compile time
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: encountered @panic at compile-time
diff --git a/test/compile_errors/stage1/obj/parameter_redeclaration.zig b/test/compile_errors/stage1/obj/parameter_redeclaration.zig
index 01fc507afc..528eee8374 100644
--- a/test/compile_errors/stage1/obj/parameter_redeclaration.zig
+++ b/test/compile_errors/stage1/obj/parameter_redeclaration.zig
@@ -2,7 +2,9 @@ fn f(a : i32, a : i32) void {
 }
 export fn entry() void { f(1, 2); }
 
-// parameter redeclaration
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:15: error: redeclaration of function parameter 'a'
 // tmp.zig:1:6: note: previous declaration here
diff --git a/test/compile_errors/stage1/obj/parameter_shadowing_global.zig b/test/compile_errors/stage1/obj/parameter_shadowing_global.zig
index a58a0b93ce..ce417d7188 100644
--- a/test/compile_errors/stage1/obj/parameter_shadowing_global.zig
+++ b/test/compile_errors/stage1/obj/parameter_shadowing_global.zig
@@ -4,7 +4,9 @@ export fn entry() void {
     f(1234);
 }
 
-// parameter shadowing global
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:6: error: local shadows declaration of 'Foo'
 // tmp.zig:1:1: note: declared here
diff --git a/test/compile_errors/stage1/obj/pass_const_ptr_to_mutable_ptr_fn.zig b/test/compile_errors/stage1/obj/pass_const_ptr_to_mutable_ptr_fn.zig
index ff0057bb48..3209bb7321 100644
--- a/test/compile_errors/stage1/obj/pass_const_ptr_to_mutable_ptr_fn.zig
+++ b/test/compile_errors/stage1/obj/pass_const_ptr_to_mutable_ptr_fn.zig
@@ -10,6 +10,8 @@ fn ptrEql(a: *[]const u8, b: *[]const u8) bool {
 
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// pass const ptr to mutable ptr fn
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:19: error: expected type '*[]const u8', found '*const []const u8'
diff --git a/test/compile_errors/stage1/obj/passing_a_not-aligned-enough_pointer_to_cmpxchg.zig b/test/compile_errors/stage1/obj/passing_a_not-aligned-enough_pointer_to_cmpxchg.zig
index 40564998b7..c1725f1ee8 100644
--- a/test/compile_errors/stage1/obj/passing_a_not-aligned-enough_pointer_to_cmpxchg.zig
+++ b/test/compile_errors/stage1/obj/passing_a_not-aligned-enough_pointer_to_cmpxchg.zig
@@ -5,6 +5,8 @@ export fn entry() bool {
     return x == 5678;
 }
 
-// passing a not-aligned-enough pointer to cmpxchg
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:32: error: expected type '*i32', found '*align(1) i32'
diff --git a/test/compile_errors/stage1/obj/passing_an_under-aligned_function_pointer.zig b/test/compile_errors/stage1/obj/passing_an_under-aligned_function_pointer.zig
index f6c0e52cc0..d67bd42a72 100644
--- a/test/compile_errors/stage1/obj/passing_an_under-aligned_function_pointer.zig
+++ b/test/compile_errors/stage1/obj/passing_an_under-aligned_function_pointer.zig
@@ -6,6 +6,8 @@ fn testImplicitlyDecreaseFnAlign(ptr: fn () align(8) i32, answer: i32) void {
 }
 fn alignedSmall() align(4) i32 { return 1234; }
 
-// passing an under-aligned function pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:35: error: expected type 'fn() align(8) i32', found 'fn() align(4) i32'
diff --git a/test/compile_errors/stage1/obj/peer_cast_then_implicit_cast_const_pointer_to_mutable_C_pointer.zig b/test/compile_errors/stage1/obj/peer_cast_then_implicit_cast_const_pointer_to_mutable_C_pointer.zig
index 78f072c0d0..7d18e760c3 100644
--- a/test/compile_errors/stage1/obj/peer_cast_then_implicit_cast_const_pointer_to_mutable_C_pointer.zig
+++ b/test/compile_errors/stage1/obj/peer_cast_then_implicit_cast_const_pointer_to_mutable_C_pointer.zig
@@ -3,7 +3,9 @@ export fn func() void {
     strValue = strValue orelse "";
 }
 
-// peer cast then implicit cast const pointer to mutable C pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:32: error: expected type '[*c]u8', found '*const [0:0]u8'
 // tmp.zig:3:32: note: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/pointer_arithmetic_on_pointer-to-array.zig b/test/compile_errors/stage1/obj/pointer_arithmetic_on_pointer-to-array.zig
index b293ae2b32..6542aa6968 100644
--- a/test/compile_errors/stage1/obj/pointer_arithmetic_on_pointer-to-array.zig
+++ b/test/compile_errors/stage1/obj/pointer_arithmetic_on_pointer-to-array.zig
@@ -5,6 +5,8 @@ export fn foo() void {
     _ = z;
 }
 
-// pointer arithmetic on pointer-to-array
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:17: error: integer value 1 cannot be coerced to type '*[10]u8'
diff --git a/test/compile_errors/stage1/obj/pointer_attributes_checked_when_coercing_pointer_to_anon_literal.zig b/test/compile_errors/stage1/obj/pointer_attributes_checked_when_coercing_pointer_to_anon_literal.zig
index 079844ac7f..8456c8afcb 100644
--- a/test/compile_errors/stage1/obj/pointer_attributes_checked_when_coercing_pointer_to_anon_literal.zig
+++ b/test/compile_errors/stage1/obj/pointer_attributes_checked_when_coercing_pointer_to_anon_literal.zig
@@ -12,7 +12,9 @@ comptime {
     _ = c;
 }
 
-// pointer attributes checked when coercing pointer to anon literal
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:31: error: cannot cast pointer to array literal to slice type '[][]const u8'
 // tmp.zig:2:31: note: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/pointer_to_noreturn.zig b/test/compile_errors/stage1/obj/pointer_to_noreturn.zig
index 3b945919fc..5afcaacaad 100644
--- a/test/compile_errors/stage1/obj/pointer_to_noreturn.zig
+++ b/test/compile_errors/stage1/obj/pointer_to_noreturn.zig
@@ -1,6 +1,8 @@
 fn a() *noreturn {}
 export fn entry() void { _ = a(); }
 
-// pointer to noreturn
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:9: error: pointer to noreturn not allowed
diff --git a/test/compile_errors/stage1/obj/popCount-non-integer.zig b/test/compile_errors/stage1/obj/popCount-non-integer.zig
index 694b794927..a58a98faa3 100644
--- a/test/compile_errors/stage1/obj/popCount-non-integer.zig
+++ b/test/compile_errors/stage1/obj/popCount-non-integer.zig
@@ -2,6 +2,8 @@ export fn entry(x: f32) u32 {
     return @popCount(f32, x);
 }
 
-// @popCount - non-integer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:22: error: expected integer type, found 'f32'
diff --git a/test/compile_errors/stage1/obj/prevent_bad_implicit_casting_of_anyframe_types.zig b/test/compile_errors/stage1/obj/prevent_bad_implicit_casting_of_anyframe_types.zig
index 14bdb9cb11..2e21d45c12 100644
--- a/test/compile_errors/stage1/obj/prevent_bad_implicit_casting_of_anyframe_types.zig
+++ b/test/compile_errors/stage1/obj/prevent_bad_implicit_casting_of_anyframe_types.zig
@@ -15,7 +15,9 @@ export fn c() void {
 }
 fn func() void {}
 
-// prevent bad implicit casting of anyframe types
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:28: error: expected type 'anyframe->i32', found 'anyframe'
 // tmp.zig:8:28: error: expected type 'anyframe->i32', found 'i32'
diff --git a/test/compile_errors/stage1/obj/primitives_take_precedence_over_declarations.zig b/test/compile_errors/stage1/obj/primitives_take_precedence_over_declarations.zig
index 3517c07917..6f6107e88c 100644
--- a/test/compile_errors/stage1/obj/primitives_take_precedence_over_declarations.zig
+++ b/test/compile_errors/stage1/obj/primitives_take_precedence_over_declarations.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     _ = a;
 }
 
-// primitives take precedence over declarations
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:19: error: integer value 300 cannot be coerced to type 'u8'
diff --git a/test/compile_errors/stage1/obj/ptrCast_a_0_bit_type_to_a_non-_0_bit_type.zig b/test/compile_errors/stage1/obj/ptrCast_a_0_bit_type_to_a_non-_0_bit_type.zig
index 63d0656f21..2fc30d4a32 100644
--- a/test/compile_errors/stage1/obj/ptrCast_a_0_bit_type_to_a_non-_0_bit_type.zig
+++ b/test/compile_errors/stage1/obj/ptrCast_a_0_bit_type_to_a_non-_0_bit_type.zig
@@ -4,7 +4,9 @@ export fn entry() bool {
     return p == null;
 }
 
-// @ptrCast a 0 bit type to a non- 0 bit type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:15: error: '*u0' and '?*u0' do not have the same in-memory representation
 // tmp.zig:3:31: note: '*u0' has no in-memory bits
diff --git a/test/compile_errors/stage1/obj/ptrCast_discards_const_qualifier.zig b/test/compile_errors/stage1/obj/ptrCast_discards_const_qualifier.zig
index 1517fd4bd8..1a90ff73f8 100644
--- a/test/compile_errors/stage1/obj/ptrCast_discards_const_qualifier.zig
+++ b/test/compile_errors/stage1/obj/ptrCast_discards_const_qualifier.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     _ = y;
 }
 
-// @ptrCast discards const qualifier
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:15: error: cast discards const qualifier
diff --git a/test/compile_errors/stage1/obj/ptrToInt_0_to_non_optional_pointer.zig b/test/compile_errors/stage1/obj/ptrToInt_0_to_non_optional_pointer.zig
index fde1e53c1a..b8a5d1b0aa 100644
--- a/test/compile_errors/stage1/obj/ptrToInt_0_to_non_optional_pointer.zig
+++ b/test/compile_errors/stage1/obj/ptrToInt_0_to_non_optional_pointer.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = b;
 }
 
-// @ptrToInt 0 to non optional pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:13: error: pointer type '*i32' does not allow address zero
diff --git a/test/compile_errors/stage1/obj/ptrToInt_on_void.zig b/test/compile_errors/stage1/obj/ptrToInt_on_void.zig
index fd43053103..5012be65e0 100644
--- a/test/compile_errors/stage1/obj/ptrToInt_on_void.zig
+++ b/test/compile_errors/stage1/obj/ptrToInt_on_void.zig
@@ -2,6 +2,8 @@ export fn entry() bool {
     return @ptrToInt(&{}) == @ptrToInt(&{});
 }
 
-// @ptrToInt on *void
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:23: error: pointer to size 0 type has no address
diff --git a/test/compile_errors/stage1/obj/ptrcast_to_non-pointer.zig b/test/compile_errors/stage1/obj/ptrcast_to_non-pointer.zig
index 74894d5e8a..7e9e9a99b7 100644
--- a/test/compile_errors/stage1/obj/ptrcast_to_non-pointer.zig
+++ b/test/compile_errors/stage1/obj/ptrcast_to_non-pointer.zig
@@ -2,6 +2,8 @@ export fn entry(a: *i32) usize {
     return @ptrCast(usize, a);
 }
 
-// ptrcast to non-pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: expected pointer, found 'usize'
diff --git a/test/compile_errors/stage1/obj/range_operator_in_switch_used_on_error_set.zig b/test/compile_errors/stage1/obj/range_operator_in_switch_used_on_error_set.zig
index 4f2949c50c..8108f42979 100644
--- a/test/compile_errors/stage1/obj/range_operator_in_switch_used_on_error_set.zig
+++ b/test/compile_errors/stage1/obj/range_operator_in_switch_used_on_error_set.zig
@@ -12,6 +12,8 @@ fn foo(x: i32) !void {
     }
 }
 
-// range operator in switch used on error set
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:17: error: operator not allowed for errors
diff --git a/test/compile_errors/stage1/obj/reading_past_end_of_pointer_casted_array.zig b/test/compile_errors/stage1/obj/reading_past_end_of_pointer_casted_array.zig
index 558797d69b..cece3345c3 100644
--- a/test/compile_errors/stage1/obj/reading_past_end_of_pointer_casted_array.zig
+++ b/test/compile_errors/stage1/obj/reading_past_end_of_pointer_casted_array.zig
@@ -6,6 +6,8 @@ comptime {
     _ = deref;
 }
 
-// reading past end of pointer casted array
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:26: error: attempt to read 4 bytes from [4]u8 at index 1 which is 3 bytes
diff --git a/test/compile_errors/stage1/obj/recursive_inferred_error_set.zig b/test/compile_errors/stage1/obj/recursive_inferred_error_set.zig
index 8059833923..89a2a54cfa 100644
--- a/test/compile_errors/stage1/obj/recursive_inferred_error_set.zig
+++ b/test/compile_errors/stage1/obj/recursive_inferred_error_set.zig
@@ -5,6 +5,8 @@ fn foo() !void {
     try foo();
 }
 
-// recursive inferred error set
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:5: error: cannot resolve inferred error set '@typeInfo(@typeInfo(@TypeOf(foo)).Fn.return_type.?).ErrorUnion.error_set': function 'foo' not fully analyzed yet
diff --git a/test/compile_errors/stage1/obj/redefinition_of_enums.zig b/test/compile_errors/stage1/obj/redefinition_of_enums.zig
index b4033536c3..a95eb88935 100644
--- a/test/compile_errors/stage1/obj/redefinition_of_enums.zig
+++ b/test/compile_errors/stage1/obj/redefinition_of_enums.zig
@@ -1,7 +1,9 @@
 const A = enum {x};
 const A = enum {x};
 
-// redefinition of enums
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:1: error: redeclaration of 'A'
 // tmp.zig:1:1: note: other declaration here
diff --git a/test/compile_errors/stage1/obj/redefinition_of_global_variables.zig b/test/compile_errors/stage1/obj/redefinition_of_global_variables.zig
index b2267423b0..3651946ffe 100644
--- a/test/compile_errors/stage1/obj/redefinition_of_global_variables.zig
+++ b/test/compile_errors/stage1/obj/redefinition_of_global_variables.zig
@@ -1,7 +1,9 @@
 var a : i32 = 1;
 var a : i32 = 2;
 
-// redefinition of global variables
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:1: error: redeclaration of 'a'
 // tmp.zig:1:1: note: other declaration here
diff --git a/test/compile_errors/stage1/obj/redefinition_of_struct.zig b/test/compile_errors/stage1/obj/redefinition_of_struct.zig
index 8c169356c9..8367a05e43 100644
--- a/test/compile_errors/stage1/obj/redefinition_of_struct.zig
+++ b/test/compile_errors/stage1/obj/redefinition_of_struct.zig
@@ -1,7 +1,9 @@
 const A = struct { x : i32, };
 const A = struct { y : i32, };
 
-// redefinition of struct
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:1: error: redeclaration of 'A'
 // tmp.zig:1:1: note: other declaration here
diff --git a/test/compile_errors/stage1/obj/refer_to_the_type_of_a_generic_function.zig b/test/compile_errors/stage1/obj/refer_to_the_type_of_a_generic_function.zig
index 6e23854cd6..99ab1da8a3 100644
--- a/test/compile_errors/stage1/obj/refer_to_the_type_of_a_generic_function.zig
+++ b/test/compile_errors/stage1/obj/refer_to_the_type_of_a_generic_function.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     f(i32);
 }
 
-// refer to the type of a generic function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/referring_to_a_struct_that_is_invalid.zig b/test/compile_errors/stage1/obj/referring_to_a_struct_that_is_invalid.zig
index 5f646461d8..433650cddb 100644
--- a/test/compile_errors/stage1/obj/referring_to_a_struct_that_is_invalid.zig
+++ b/test/compile_errors/stage1/obj/referring_to_a_struct_that_is_invalid.zig
@@ -10,6 +10,8 @@ fn assert(ok: bool) void {
     if (!ok) unreachable;
 }
 
-// referring to a struct that is invalid
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:10:14: error: reached unreachable code
diff --git a/test/compile_errors/stage1/obj/regression_test_2980_base_type_u32_is_not_type_checked_properly_when_assigning_a_value_within_a_struct.zig b/test/compile_errors/stage1/obj/regression_test_2980_base_type_u32_is_not_type_checked_properly_when_assigning_a_value_within_a_struct.zig
index a714b10ef6..8be44fbe05 100644
--- a/test/compile_errors/stage1/obj/regression_test_2980_base_type_u32_is_not_type_checked_properly_when_assigning_a_value_within_a_struct.zig
+++ b/test/compile_errors/stage1/obj/regression_test_2980_base_type_u32_is_not_type_checked_properly_when_assigning_a_value_within_a_struct.zig
@@ -14,6 +14,8 @@ export fn entry() void {
     _ = afoo;
 }
 
-// regression test #2980: base type u32 is not type checked properly when assigning a value within a struct
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:12:25: error: cannot convert error union to payload type. consider using `try`, `catch`, or `if`. expected type 'u32', found '@typeInfo(@typeInfo(@TypeOf(get_uval)).Fn.return_type.?).ErrorUnion.error_set!u32'
diff --git a/test/compile_errors/stage1/obj/reify_type.Fn_with_is_generic_true.zig b/test/compile_errors/stage1/obj/reify_type.Fn_with_is_generic_true.zig
index ed33158649..f2849b5eb4 100644
--- a/test/compile_errors/stage1/obj/reify_type.Fn_with_is_generic_true.zig
+++ b/test/compile_errors/stage1/obj/reify_type.Fn_with_is_generic_true.zig
@@ -10,6 +10,8 @@ const Foo = @Type(.{
 });
 comptime { _ = Foo; }
 
-// @Type(.Fn) with is_generic = true
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:20: error: Type.Fn.is_generic must be false for @Type
diff --git a/test/compile_errors/stage1/obj/reify_type.Fn_with_is_var_args_true_and_non-C_callconv.zig b/test/compile_errors/stage1/obj/reify_type.Fn_with_is_var_args_true_and_non-C_callconv.zig
index a57484075f..4d449e9eb9 100644
--- a/test/compile_errors/stage1/obj/reify_type.Fn_with_is_var_args_true_and_non-C_callconv.zig
+++ b/test/compile_errors/stage1/obj/reify_type.Fn_with_is_var_args_true_and_non-C_callconv.zig
@@ -10,6 +10,8 @@ const Foo = @Type(.{
 });
 comptime { _ = Foo; }
 
-// @Type(.Fn) with is_var_args = true and non-C callconv
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:20: error: varargs functions must have C calling convention
diff --git a/test/compile_errors/stage1/obj/reify_type.Fn_with_return_type_null.zig b/test/compile_errors/stage1/obj/reify_type.Fn_with_return_type_null.zig
index f8ddea52cf..98cbc37d41 100644
--- a/test/compile_errors/stage1/obj/reify_type.Fn_with_return_type_null.zig
+++ b/test/compile_errors/stage1/obj/reify_type.Fn_with_return_type_null.zig
@@ -10,6 +10,8 @@ const Foo = @Type(.{
 });
 comptime { _ = Foo; }
 
-// @Type(.Fn) with return_type = null
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:20: error: Type.Fn.return_type must be non-null for @Type
diff --git a/test/compile_errors/stage1/obj/reify_type.Pointer_with_invalid_address_space.zig b/test/compile_errors/stage1/obj/reify_type.Pointer_with_invalid_address_space.zig
index 78160fae58..1ca97ce250 100644
--- a/test/compile_errors/stage1/obj/reify_type.Pointer_with_invalid_address_space.zig
+++ b/test/compile_errors/stage1/obj/reify_type.Pointer_with_invalid_address_space.zig
@@ -11,6 +11,8 @@ export fn entry() void {
     }});
 }
 
-// @Type(.Pointer) with invalid address space 
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:16: error: address space 'gs' not available in stage 1 compiler, must be .generic
diff --git a/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_non-integer_tag_type.zig b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_non-integer_tag_type.zig
index e77c2eb627..56d05578be 100644
--- a/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_non-integer_tag_type.zig
+++ b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_non-integer_tag_type.zig
@@ -11,6 +11,8 @@ export fn entry() void {
     _ = @intToEnum(Tag, 0);
 }
 
-// @Type for exhaustive enum with non-integer tag type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:20: error: Type.Enum.tag_type must be an integer type, not 'bool'
diff --git a/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_undefined_tag_type.zig b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_undefined_tag_type.zig
index 6a00516387..e6454d2ee5 100644
--- a/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_undefined_tag_type.zig
+++ b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_undefined_tag_type.zig
@@ -11,6 +11,8 @@ export fn entry() void {
     _ = @intToEnum(Tag, 0);
 }
 
-// @Type for exhaustive enum with undefined tag type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:20: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_zero_fields.zig b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_zero_fields.zig
index 87689247aa..d3ce70c1b0 100644
--- a/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_zero_fields.zig
+++ b/test/compile_errors/stage1/obj/reify_type_for_exhaustive_enum_with_zero_fields.zig
@@ -11,6 +11,8 @@ export fn entry() void {
     _ = @intToEnum(Tag, 0);
 }
 
-// @Type for exhaustive enum with zero fields
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:20: error: enums must have 1 or more fields
diff --git a/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_enum_field.zig b/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_enum_field.zig
index f9155d7161..0c56cb91ea 100644
--- a/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_enum_field.zig
+++ b/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_enum_field.zig
@@ -27,6 +27,8 @@ export fn entry() void {
     tagged = .{ .unsigned = 1 };
 }
 
-// @Type for tagged union with extra enum field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:14:23: error: enum field missing: 'arst'
diff --git a/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_union_field.zig b/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_union_field.zig
index 9cd82213df..63cf1f178e 100644
--- a/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_union_field.zig
+++ b/test/compile_errors/stage1/obj/reify_type_for_tagged_union_with_extra_union_field.zig
@@ -27,7 +27,9 @@ export fn entry() void {
     tagged = .{ .unsigned = 1 };
 }
 
-// @Type for tagged union with extra union field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:13:23: error: enum field not found: 'arst'
 // tmp.zig:1:20: note: enum declared here
diff --git a/test/compile_errors/stage1/obj/reify_type_for_union_with_opaque_field.zig b/test/compile_errors/stage1/obj/reify_type_for_union_with_opaque_field.zig
index 374ccb544b..d3f4f6da4b 100644
--- a/test/compile_errors/stage1/obj/reify_type_for_union_with_opaque_field.zig
+++ b/test/compile_errors/stage1/obj/reify_type_for_union_with_opaque_field.zig
@@ -12,6 +12,8 @@ export fn entry() void {
     _ = Untagged{};
 }
 
-// @Type for union with opaque field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:25: error: opaque types have unknown size and therefore cannot be directly embedded in unions
diff --git a/test/compile_errors/stage1/obj/reify_type_for_union_with_zero_fields.zig b/test/compile_errors/stage1/obj/reify_type_for_union_with_zero_fields.zig
index 8243ff3292..578f902697 100644
--- a/test/compile_errors/stage1/obj/reify_type_for_union_with_zero_fields.zig
+++ b/test/compile_errors/stage1/obj/reify_type_for_union_with_zero_fields.zig
@@ -10,6 +10,8 @@ export fn entry() void {
     _ = Untagged{};
 }
 
-// @Type for union with zero fields
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:25: error: unions must have 1 or more fields
diff --git a/test/compile_errors/stage1/obj/reify_type_union_payload_is_undefined.zig b/test/compile_errors/stage1/obj/reify_type_union_payload_is_undefined.zig
index 43261dc32f..47be31c711 100644
--- a/test/compile_errors/stage1/obj/reify_type_union_payload_is_undefined.zig
+++ b/test/compile_errors/stage1/obj/reify_type_union_payload_is_undefined.zig
@@ -3,6 +3,8 @@ const Foo = @Type(.{
 });
 comptime { _ = Foo; }
 
-// @Type() union payload is undefined
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:20: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/reify_type_with_Type.Int.zig b/test/compile_errors/stage1/obj/reify_type_with_Type.Int.zig
index cea09d3f19..116bd86e0f 100644
--- a/test/compile_errors/stage1/obj/reify_type_with_Type.Int.zig
+++ b/test/compile_errors/stage1/obj/reify_type_with_Type.Int.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     });
 }
 
-// @Type with Type.Int
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:31: error: expected type 'std.builtin.Type', found 'std.builtin.Type.Int'
diff --git a/test/compile_errors/stage1/obj/reify_type_with_non-constant_expression.zig b/test/compile_errors/stage1/obj/reify_type_with_non-constant_expression.zig
index a58b2a6b33..7eec6b395a 100644
--- a/test/compile_errors/stage1/obj/reify_type_with_non-constant_expression.zig
+++ b/test/compile_errors/stage1/obj/reify_type_with_non-constant_expression.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     _ = @Type(globalTypeInfo);
 }
 
-// @Type with non-constant expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:15: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/reify_type_with_undefined.zig b/test/compile_errors/stage1/obj/reify_type_with_undefined.zig
index 984c9ac555..1de93ccdf6 100644
--- a/test/compile_errors/stage1/obj/reify_type_with_undefined.zig
+++ b/test/compile_errors/stage1/obj/reify_type_with_undefined.zig
@@ -12,7 +12,9 @@ comptime {
     });
 }
 
-// @Type with undefined
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:16: error: use of undefined value here causes undefined behavior
 // tmp.zig:5:16: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr.zig b/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr.zig
index a45fd9f41a..18dd6382fc 100644
--- a/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr.zig
+++ b/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr.zig
@@ -11,6 +11,8 @@ pub const Container = struct {
     not_optional: i32,
 };
 
-// result location incompatibility mismatching handle_is_ptr
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:36: error: cannot convert optional to payload type. consider using `.?`, `orelse`, or `if`. expected type 'i32', found '?i32'
diff --git a/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr_generic_call.zig b/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr_generic_call.zig
index 8b913bd15c..75811c58e1 100644
--- a/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr_generic_call.zig
+++ b/test/compile_errors/stage1/obj/result_location_incompatibility_mismatching_handle_is_ptr_generic_call.zig
@@ -11,6 +11,8 @@ pub const Container = struct {
     not_optional: i32,
 };
 
-// result location incompatibility mismatching handle_is_ptr (generic call)
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:36: error: cannot convert optional to payload type. consider using `.?`, `orelse`, or `if`. expected type 'i32', found '?i32'
diff --git a/test/compile_errors/stage1/obj/return_from_defer_expression.zig b/test/compile_errors/stage1/obj/return_from_defer_expression.zig
index 0f4ac8e071..cbe9542176 100644
--- a/test/compile_errors/stage1/obj/return_from_defer_expression.zig
+++ b/test/compile_errors/stage1/obj/return_from_defer_expression.zig
@@ -14,6 +14,8 @@ pub fn maybeInt() ?i32 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(testTrickyDefer)); }
 
-// return from defer expression
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:11: error: 'try' not allowed inside defer expression
diff --git a/test/compile_errors/stage1/obj/returning_error_from_void_async_function.zig b/test/compile_errors/stage1/obj/returning_error_from_void_async_function.zig
index a00422dd12..691c89a347 100644
--- a/test/compile_errors/stage1/obj/returning_error_from_void_async_function.zig
+++ b/test/compile_errors/stage1/obj/returning_error_from_void_async_function.zig
@@ -5,6 +5,8 @@ fn amain() callconv(.Async) void {
     return error.ShouldBeCompileError;
 }
 
-// returning error from void async function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:17: error: expected type 'void', found 'error{ShouldBeCompileError}'
diff --git a/test/compile_errors/stage1/obj/runtime-known_async_function_called.zig b/test/compile_errors/stage1/obj/runtime-known_async_function_called.zig
index 52afd83a11..90685ce566 100644
--- a/test/compile_errors/stage1/obj/runtime-known_async_function_called.zig
+++ b/test/compile_errors/stage1/obj/runtime-known_async_function_called.zig
@@ -7,6 +7,8 @@ fn amain() void {
 }
 fn afunc() callconv(.Async) void {}
 
-// runtime-known async function called
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:12: error: function is not comptime-known; @asyncCall required
diff --git a/test/compile_errors/stage1/obj/runtime-known_function_called_with_async_keyword.zig b/test/compile_errors/stage1/obj/runtime-known_function_called_with_async_keyword.zig
index 79f0420a83..c66d0f9cbb 100644
--- a/test/compile_errors/stage1/obj/runtime-known_function_called_with_async_keyword.zig
+++ b/test/compile_errors/stage1/obj/runtime-known_function_called_with_async_keyword.zig
@@ -5,6 +5,8 @@ export fn entry() void {
 
 fn afunc() callconv(.Async) void { }
 
-// runtime-known function called with async keyword
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:15: error: function is not comptime-known; @asyncCall required
diff --git a/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_struct_type.zig b/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_struct_type.zig
index f8a3fd3ba1..62b09673eb 100644
--- a/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_struct_type.zig
+++ b/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_struct_type.zig
@@ -8,6 +8,8 @@ export fn f() void {
     _ = foo;
 }
 
-// runtime assignment to comptime struct type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:23: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_union_type.zig b/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_union_type.zig
index bc4f093b0d..af13f8b8ce 100644
--- a/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_union_type.zig
+++ b/test/compile_errors/stage1/obj/runtime_assignment_to_comptime_union_type.zig
@@ -8,6 +8,8 @@ export fn f() void {
     _ = foo;
 }
 
-// runtime assignment to comptime union type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:23: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/obj/runtime_cast_to_union_which_has_non-void_fields.zig b/test/compile_errors/stage1/obj/runtime_cast_to_union_which_has_non-void_fields.zig
index 8be361f2fe..d25c815c7e 100644
--- a/test/compile_errors/stage1/obj/runtime_cast_to_union_which_has_non-void_fields.zig
+++ b/test/compile_errors/stage1/obj/runtime_cast_to_union_which_has_non-void_fields.zig
@@ -12,7 +12,9 @@ fn foo(l: Letter) void {
     _ = x;
 }
 
-// runtime cast to union which has non-void fields
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:11:20: error: runtime cast to union 'Value' which has non-void fields
 // tmp.zig:3:5: note: field 'A' has type 'i32'
diff --git a/test/compile_errors/stage1/obj/runtime_index_into_comptime_type_slice.zig b/test/compile_errors/stage1/obj/runtime_index_into_comptime_type_slice.zig
index 4b9538c1a1..379767c7f3 100644
--- a/test/compile_errors/stage1/obj/runtime_index_into_comptime_type_slice.zig
+++ b/test/compile_errors/stage1/obj/runtime_index_into_comptime_type_slice.zig
@@ -10,6 +10,8 @@ export fn entry() void {
     _ = field;
 }
 
-// runtime index into comptime type slice
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:9:51: error: values of type 'std.builtin.Type.StructField' must be comptime known, but index value is runtime known
diff --git a/test/compile_errors/stage1/obj/saturating_arithmetic_does_not_allow_floats.zig b/test/compile_errors/stage1/obj/saturating_arithmetic_does_not_allow_floats.zig
index 57ee724e74..7bda134af6 100644
--- a/test/compile_errors/stage1/obj/saturating_arithmetic_does_not_allow_floats.zig
+++ b/test/compile_errors/stage1/obj/saturating_arithmetic_does_not_allow_floats.zig
@@ -2,6 +2,8 @@ export fn a() void {
     _ = @as(f32, 1.0) +| @as(f32, 1.0);
 }
 
-// saturating arithmetic does not allow floats
+// error
+// backend=stage1
+// target=native
 //
 // error: invalid operands to binary expression: 'f32' and 'f32'
diff --git a/test/compile_errors/stage1/obj/saturating_shl_assign_does_not_allow_negative_rhs_at_comptime.zig b/test/compile_errors/stage1/obj/saturating_shl_assign_does_not_allow_negative_rhs_at_comptime.zig
index 9a46367ae5..7b94f8e832 100644
--- a/test/compile_errors/stage1/obj/saturating_shl_assign_does_not_allow_negative_rhs_at_comptime.zig
+++ b/test/compile_errors/stage1/obj/saturating_shl_assign_does_not_allow_negative_rhs_at_comptime.zig
@@ -5,6 +5,8 @@ export fn a() void {
   }
 }
 
-// saturating shl assign does not allow negative rhs at comptime
+// error
+// backend=stage1
+// target=native
 //
 // error: shift by negative value -2
diff --git a/test/compile_errors/stage1/obj/saturating_shl_does_not_allow_negative_rhs_at_comptime.zig b/test/compile_errors/stage1/obj/saturating_shl_does_not_allow_negative_rhs_at_comptime.zig
index ffe715a8e3..ac1ce7d3a0 100644
--- a/test/compile_errors/stage1/obj/saturating_shl_does_not_allow_negative_rhs_at_comptime.zig
+++ b/test/compile_errors/stage1/obj/saturating_shl_does_not_allow_negative_rhs_at_comptime.zig
@@ -2,6 +2,8 @@ export fn a() void {
     _ = @as(i32, 1) <<| @as(i32, -2);
 }
 
-// saturating shl does not allow negative rhs at comptime
+// error
+// backend=stage1
+// target=native
 //
 // error: shift by negative value -2
diff --git a/test/compile_errors/stage1/obj/setAlignStack_in_inline_function.zig b/test/compile_errors/stage1/obj/setAlignStack_in_inline_function.zig
index 9261ecdb18..8490298aa3 100644
--- a/test/compile_errors/stage1/obj/setAlignStack_in_inline_function.zig
+++ b/test/compile_errors/stage1/obj/setAlignStack_in_inline_function.zig
@@ -5,6 +5,8 @@ fn foo() callconv(.Inline) void {
     @setAlignStack(16);
 }
 
-// @setAlignStack in inline function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:5: error: @setAlignStack in inline function
diff --git a/test/compile_errors/stage1/obj/setAlignStack_in_naked_function.zig b/test/compile_errors/stage1/obj/setAlignStack_in_naked_function.zig
index d7146625c5..b9adc84ed5 100644
--- a/test/compile_errors/stage1/obj/setAlignStack_in_naked_function.zig
+++ b/test/compile_errors/stage1/obj/setAlignStack_in_naked_function.zig
@@ -2,6 +2,8 @@ export fn entry() callconv(.Naked) void {
     @setAlignStack(16);
 }
 
-// @setAlignStack in naked function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: @setAlignStack in naked function
diff --git a/test/compile_errors/stage1/obj/setAlignStack_outside_function.zig b/test/compile_errors/stage1/obj/setAlignStack_outside_function.zig
index c9ac12e6e0..754756012b 100644
--- a/test/compile_errors/stage1/obj/setAlignStack_outside_function.zig
+++ b/test/compile_errors/stage1/obj/setAlignStack_outside_function.zig
@@ -2,6 +2,8 @@ comptime {
     @setAlignStack(16);
 }
 
-// @setAlignStack outside function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: @setAlignStack outside function
diff --git a/test/compile_errors/stage1/obj/setAlignStack_set_twice.zig b/test/compile_errors/stage1/obj/setAlignStack_set_twice.zig
index de8cde7c01..244db9d962 100644
--- a/test/compile_errors/stage1/obj/setAlignStack_set_twice.zig
+++ b/test/compile_errors/stage1/obj/setAlignStack_set_twice.zig
@@ -3,7 +3,9 @@ export fn entry() void {
     @setAlignStack(16);
 }
 
-// @setAlignStack set twice
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: alignstack set twice
 // tmp.zig:2:5: note: first set here
diff --git a/test/compile_errors/stage1/obj/setAlignStack_too_big.zig b/test/compile_errors/stage1/obj/setAlignStack_too_big.zig
index 669ec45204..601631e158 100644
--- a/test/compile_errors/stage1/obj/setAlignStack_too_big.zig
+++ b/test/compile_errors/stage1/obj/setAlignStack_too_big.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     @setAlignStack(511 + 1);
 }
 
-// @setAlignStack too big
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: attempt to @setAlignStack(512); maximum is 256
diff --git a/test/compile_errors/stage1/obj/setFloatMode_twice_for_same_scope.zig b/test/compile_errors/stage1/obj/setFloatMode_twice_for_same_scope.zig
index 3e55604030..41fe6d4d6c 100644
--- a/test/compile_errors/stage1/obj/setFloatMode_twice_for_same_scope.zig
+++ b/test/compile_errors/stage1/obj/setFloatMode_twice_for_same_scope.zig
@@ -3,7 +3,9 @@ export fn foo() void {
     @setFloatMode(@import("std").builtin.FloatMode.Optimized);
 }
 
-// @setFloatMode twice for same scope
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: float mode set twice for same scope
 // tmp.zig:2:5: note: first set here
diff --git a/test/compile_errors/stage1/obj/setRuntimeSafety_twice_for_same_scope.zig b/test/compile_errors/stage1/obj/setRuntimeSafety_twice_for_same_scope.zig
index 741a214cde..03a93b68d5 100644
--- a/test/compile_errors/stage1/obj/setRuntimeSafety_twice_for_same_scope.zig
+++ b/test/compile_errors/stage1/obj/setRuntimeSafety_twice_for_same_scope.zig
@@ -3,7 +3,9 @@ export fn foo() void {
     @setRuntimeSafety(false);
 }
 
-// @setRuntimeSafety twice for same scope
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: runtime safety set twice for same scope
 // tmp.zig:2:5: note: first set here
diff --git a/test/compile_errors/stage1/obj/setting_a_section_on_a_local_variable.zig b/test/compile_errors/stage1/obj/setting_a_section_on_a_local_variable.zig
index eb3df0e214..90d605dc40 100644
--- a/test/compile_errors/stage1/obj/setting_a_section_on_a_local_variable.zig
+++ b/test/compile_errors/stage1/obj/setting_a_section_on_a_local_variable.zig
@@ -3,6 +3,8 @@ export fn entry() i32 {
     return foo;
 }
 
-// setting a section on a local variable
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:30: error: cannot set section of local variable 'foo'
diff --git a/test/compile_errors/stage1/obj/shift_amount_has_to_be_an_integer_type.zig b/test/compile_errors/stage1/obj/shift_amount_has_to_be_an_integer_type.zig
index 6e54405619..53794dba1b 100644
--- a/test/compile_errors/stage1/obj/shift_amount_has_to_be_an_integer_type.zig
+++ b/test/compile_errors/stage1/obj/shift_amount_has_to_be_an_integer_type.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// shift amount has to be an integer type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:21: error: shift amount has to be an integer type, but found '*const u8'
diff --git a/test/compile_errors/stage1/obj/shift_by_negative_comptime_integer.zig b/test/compile_errors/stage1/obj/shift_by_negative_comptime_integer.zig
index 41f0ff80aa..3425cf565e 100644
--- a/test/compile_errors/stage1/obj/shift_by_negative_comptime_integer.zig
+++ b/test/compile_errors/stage1/obj/shift_by_negative_comptime_integer.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a;
 }
 
-// shift by negative comptime integer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:18: error: shift by negative value -1
diff --git a/test/compile_errors/stage1/obj/shift_left_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/shift_left_assign_on_undefined_value.zig
index a23d0e190c..575bf0ee6b 100644
--- a/test/compile_errors/stage1/obj/shift_left_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/shift_left_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a >>= 2;
 }
 
-// shift left assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/shift_left_on_undefined_value.zig b/test/compile_errors/stage1/obj/shift_left_on_undefined_value.zig
index aa0891133b..abd06fbbab 100644
--- a/test/compile_errors/stage1/obj/shift_left_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/shift_left_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a << 2;
 }
 
-// shift left on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/shift_right_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/shift_right_assign_on_undefined_value.zig
index 65f4fe50b8..575bf0ee6b 100644
--- a/test/compile_errors/stage1/obj/shift_right_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/shift_right_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a >>= 2;
 }
 
-// shift right assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/shift_right_on_undefined_value.zig b/test/compile_errors/stage1/obj/shift_right_on_undefined_value.zig
index ccd2563c84..e24cbe473a 100644
--- a/test/compile_errors/stage1/obj/shift_right_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/shift_right_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a >> 2;
 }
 
-// shift right on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/shifting_RHS_is_log2_of_LHS_int_bit_width.zig b/test/compile_errors/stage1/obj/shifting_RHS_is_log2_of_LHS_int_bit_width.zig
index 8a5d6cfee4..d9b9bbfce3 100644
--- a/test/compile_errors/stage1/obj/shifting_RHS_is_log2_of_LHS_int_bit_width.zig
+++ b/test/compile_errors/stage1/obj/shifting_RHS_is_log2_of_LHS_int_bit_width.zig
@@ -2,6 +2,8 @@ export fn entry(x: u8, y: u8) u8 {
     return x << y;
 }
 
-// shifting RHS is log2 of LHS int bit width
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:17: error: expected type 'u3', found 'u8'
diff --git a/test/compile_errors/stage1/obj/shifting_without_int_type_or_comptime_known.zig b/test/compile_errors/stage1/obj/shifting_without_int_type_or_comptime_known.zig
index 380a08a95c..4d875575d0 100644
--- a/test/compile_errors/stage1/obj/shifting_without_int_type_or_comptime_known.zig
+++ b/test/compile_errors/stage1/obj/shifting_without_int_type_or_comptime_known.zig
@@ -2,6 +2,8 @@ export fn entry(x: u8) u8 {
     return 0x11 << x;
 }
 
-// shifting without int type or comptime known
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:17: error: LHS of shift must be a fixed-width integer type, or RHS must be compile-time known
diff --git a/test/compile_errors/stage1/obj/shlExact_shifts_out_1_bits.zig b/test/compile_errors/stage1/obj/shlExact_shifts_out_1_bits.zig
index bd6e48f25c..953c5fec50 100644
--- a/test/compile_errors/stage1/obj/shlExact_shifts_out_1_bits.zig
+++ b/test/compile_errors/stage1/obj/shlExact_shifts_out_1_bits.zig
@@ -3,6 +3,8 @@ comptime {
     _ = x;
 }
 
-// @shlExact shifts out 1 bits
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: operation caused overflow
diff --git a/test/compile_errors/stage1/obj/shrExact_shifts_out_1_bits.zig b/test/compile_errors/stage1/obj/shrExact_shifts_out_1_bits.zig
index 004bf0c1c3..223db76630 100644
--- a/test/compile_errors/stage1/obj/shrExact_shifts_out_1_bits.zig
+++ b/test/compile_errors/stage1/obj/shrExact_shifts_out_1_bits.zig
@@ -3,6 +3,8 @@ comptime {
     _ = x;
 }
 
-// @shrExact shifts out 1 bits
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: exact shift shifted out 1 bits
diff --git a/test/compile_errors/stage1/obj/signed_integer_division.zig b/test/compile_errors/stage1/obj/signed_integer_division.zig
index 524f9fe1db..3eebbf2248 100644
--- a/test/compile_errors/stage1/obj/signed_integer_division.zig
+++ b/test/compile_errors/stage1/obj/signed_integer_division.zig
@@ -2,6 +2,8 @@ export fn foo(a: i32, b: i32) i32 {
     return a / b;
 }
 
-// signed integer division
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:14: error: division with 'i32' and 'i32': signed integers must use @divTrunc, @divFloor, or @divExact
diff --git a/test/compile_errors/stage1/obj/signed_integer_remainder_division.zig b/test/compile_errors/stage1/obj/signed_integer_remainder_division.zig
index e060b780d0..5877672954 100644
--- a/test/compile_errors/stage1/obj/signed_integer_remainder_division.zig
+++ b/test/compile_errors/stage1/obj/signed_integer_remainder_division.zig
@@ -2,6 +2,8 @@ export fn foo(a: i32, b: i32) i32 {
     return a % b;
 }
 
-// signed integer remainder division
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:14: error: remainder division with 'i32' and 'i32': signed integers and floats must use @rem or @mod
diff --git a/test/compile_errors/stage1/obj/sizeOf_bad_type.zig b/test/compile_errors/stage1/obj/sizeOf_bad_type.zig
index 1b336cf657..f8c397f768 100644
--- a/test/compile_errors/stage1/obj/sizeOf_bad_type.zig
+++ b/test/compile_errors/stage1/obj/sizeOf_bad_type.zig
@@ -2,6 +2,8 @@ export fn entry() usize {
     return @sizeOf(@TypeOf(null));
 }
 
-// @sizeOf bad type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:20: error: no size available for type '@Type(.Null)'
diff --git a/test/compile_errors/stage1/obj/slice_cannot_have_its_bytes_reinterpreted.zig b/test/compile_errors/stage1/obj/slice_cannot_have_its_bytes_reinterpreted.zig
index 4f7670ba74..8fcf4f505c 100644
--- a/test/compile_errors/stage1/obj/slice_cannot_have_its_bytes_reinterpreted.zig
+++ b/test/compile_errors/stage1/obj/slice_cannot_have_its_bytes_reinterpreted.zig
@@ -4,6 +4,8 @@ export fn foo() void {
     _ = value;
 }
 
-// slice cannot have its bytes reinterpreted
+// error
+// backend=stage1
+// target=native
 //
 // :3:52: error: slice '[]const u8' cannot have its bytes reinterpreted
diff --git a/test/compile_errors/stage1/obj/slice_passed_as_array_init_type.zig b/test/compile_errors/stage1/obj/slice_passed_as_array_init_type.zig
index 0d29120ca4..7ad29b1900 100644
--- a/test/compile_errors/stage1/obj/slice_passed_as_array_init_type.zig
+++ b/test/compile_errors/stage1/obj/slice_passed_as_array_init_type.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// slice passed as array init type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: array literal requires address-of operator (&) to coerce to slice type '[]u8'
diff --git a/test/compile_errors/stage1/obj/slice_passed_as_array_init_type_with_elems.zig b/test/compile_errors/stage1/obj/slice_passed_as_array_init_type_with_elems.zig
index 375ed55a72..0da4b3fc9d 100644
--- a/test/compile_errors/stage1/obj/slice_passed_as_array_init_type_with_elems.zig
+++ b/test/compile_errors/stage1/obj/slice_passed_as_array_init_type_with_elems.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// slice passed as array init type with elems
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: array literal requires address-of operator (&) to coerce to slice type '[]u8'
diff --git a/test/compile_errors/stage1/obj/slice_sentinel_mismatch-1.zig b/test/compile_errors/stage1/obj/slice_sentinel_mismatch-1.zig
index 1e3c2450cb..d0c47097da 100644
--- a/test/compile_errors/stage1/obj/slice_sentinel_mismatch-1.zig
+++ b/test/compile_errors/stage1/obj/slice_sentinel_mismatch-1.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = y;
 }
 
-// slice sentinel mismatch - 1
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:37: error: expected type '[:1]const u8', found '*const [2:2]u8'
diff --git a/test/compile_errors/stage1/obj/slice_sentinel_mismatch-2.zig b/test/compile_errors/stage1/obj/slice_sentinel_mismatch-2.zig
index f1d73eb9df..5f8d312a3c 100644
--- a/test/compile_errors/stage1/obj/slice_sentinel_mismatch-2.zig
+++ b/test/compile_errors/stage1/obj/slice_sentinel_mismatch-2.zig
@@ -4,7 +4,9 @@ fn foo() [:0]u8 {
 }
 comptime { _ = foo; }
 
-// slice sentinel mismatch - 2
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:12: error: expected type '[:0]u8', found '[]u8'
 // tmp.zig:3:12: note: destination pointer requires a terminating '0' sentinel
diff --git a/test/compile_errors/stage1/obj/slicing_of_global_undefined_pointer.zig b/test/compile_errors/stage1/obj/slicing_of_global_undefined_pointer.zig
index d52bfdf6a5..8bbc0f85eb 100644
--- a/test/compile_errors/stage1/obj/slicing_of_global_undefined_pointer.zig
+++ b/test/compile_errors/stage1/obj/slicing_of_global_undefined_pointer.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = buf[0..1];
 }
 
-// slicing of global undefined pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:12: error: non-zero length slice of undefined pointer
diff --git a/test/compile_errors/stage1/obj/slicing_single-item_pointer.zig b/test/compile_errors/stage1/obj/slicing_single-item_pointer.zig
index f6bbe752b1..d8c82fa3af 100644
--- a/test/compile_errors/stage1/obj/slicing_single-item_pointer.zig
+++ b/test/compile_errors/stage1/obj/slicing_single-item_pointer.zig
@@ -3,6 +3,8 @@ export fn entry(ptr: *i32) void {
     _ = slice;
 }
 
-// slicing single-item pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:22: error: slice of single-item pointer
diff --git a/test/compile_errors/stage1/obj/specify_enum_tag_type_that_is_too_small.zig b/test/compile_errors/stage1/obj/specify_enum_tag_type_that_is_too_small.zig
index ca7c305d38..dc7077c8f8 100644
--- a/test/compile_errors/stage1/obj/specify_enum_tag_type_that_is_too_small.zig
+++ b/test/compile_errors/stage1/obj/specify_enum_tag_type_that_is_too_small.zig
@@ -11,6 +11,8 @@ export fn entry() void {
     _ = x;
 }
 
-// specify enum tag type that is too small
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:5: error: enumeration value 4 too large for type 'u2'
diff --git a/test/compile_errors/stage1/obj/specify_non-integer_enum_tag_type.zig b/test/compile_errors/stage1/obj/specify_non-integer_enum_tag_type.zig
index 095a0812c1..333647e1e3 100644
--- a/test/compile_errors/stage1/obj/specify_non-integer_enum_tag_type.zig
+++ b/test/compile_errors/stage1/obj/specify_non-integer_enum_tag_type.zig
@@ -9,6 +9,8 @@ export fn entry() void {
     _ = x;
 }
 
-// specify non-integer enum tag type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:21: error: expected integer, found 'f32'
diff --git a/test/compile_errors/stage1/obj/src_outside_function.zig b/test/compile_errors/stage1/obj/src_outside_function.zig
index 5359135066..7f8c7ae72f 100644
--- a/test/compile_errors/stage1/obj/src_outside_function.zig
+++ b/test/compile_errors/stage1/obj/src_outside_function.zig
@@ -2,6 +2,8 @@ comptime {
     @src();
 }
 
-// @src outside function
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: @src outside function
diff --git a/test/compile_errors/stage1/obj/std.fmt_error_for_unused_arguments.zig b/test/compile_errors/stage1/obj/std.fmt_error_for_unused_arguments.zig
index 68299c2177..21603ab3d3 100644
--- a/test/compile_errors/stage1/obj/std.fmt_error_for_unused_arguments.zig
+++ b/test/compile_errors/stage1/obj/std.fmt_error_for_unused_arguments.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     @import("std").debug.print("{d} {d} {d} {d} {d}", .{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15});
 }
 
-// std.fmt error for unused arguments
+// error
+// backend=stage1
+// target=native
 //
 // ?:?:?: error: 10 unused arguments in '{d} {d} {d} {d} {d}'
diff --git a/test/compile_errors/stage1/obj/store_vector_pointer_with_unknown_runtime_index.zig b/test/compile_errors/stage1/obj/store_vector_pointer_with_unknown_runtime_index.zig
index 6ef71c863a..57e91631b1 100644
--- a/test/compile_errors/stage1/obj/store_vector_pointer_with_unknown_runtime_index.zig
+++ b/test/compile_errors/stage1/obj/store_vector_pointer_with_unknown_runtime_index.zig
@@ -9,6 +9,8 @@ fn storev(ptr: anytype, val: i32) void {
     ptr.* = val;
 }
 
-// store vector pointer with unknown runtime index
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:9:8: error: unable to determine vector element index of type '*align(16:0:4:?) i32
diff --git a/test/compile_errors/stage1/obj/storing_runtime_value_in_compile_time_variable_then_using_it.zig b/test/compile_errors/stage1/obj/storing_runtime_value_in_compile_time_variable_then_using_it.zig
index 318db771d5..2d85209358 100644
--- a/test/compile_errors/stage1/obj/storing_runtime_value_in_compile_time_variable_then_using_it.zig
+++ b/test/compile_errors/stage1/obj/storing_runtime_value_in_compile_time_variable_then_using_it.zig
@@ -42,6 +42,8 @@ export fn entry() void {
     }
 }
 
-// storing runtime value in compile time variable then using it
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:38:29: error: cannot store runtime value in compile time variable
diff --git a/test/compile_errors/stage1/obj/struct_depends_on_itself_via_optional_field.zig b/test/compile_errors/stage1/obj/struct_depends_on_itself_via_optional_field.zig
index 13ee95155d..46086172f7 100644
--- a/test/compile_errors/stage1/obj/struct_depends_on_itself_via_optional_field.zig
+++ b/test/compile_errors/stage1/obj/struct_depends_on_itself_via_optional_field.zig
@@ -10,7 +10,9 @@ export fn entry() void {
     _ = obj;
 }
 
-// struct depends on itself via optional field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:17: error: struct 'LhsExpr' depends on itself
 // tmp.zig:5:5: note: while checking this field
diff --git a/test/compile_errors/stage1/obj/struct_field_missing_type.zig b/test/compile_errors/stage1/obj/struct_field_missing_type.zig
index 669718a3d4..175f1c7df7 100644
--- a/test/compile_errors/stage1/obj/struct_field_missing_type.zig
+++ b/test/compile_errors/stage1/obj/struct_field_missing_type.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     _ = a;
 }
 
-// struct field missing type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: struct field missing type
diff --git a/test/compile_errors/stage1/obj/struct_init_syntax_for_array.zig b/test/compile_errors/stage1/obj/struct_init_syntax_for_array.zig
index 4eda9622ab..6362e05114 100644
--- a/test/compile_errors/stage1/obj/struct_init_syntax_for_array.zig
+++ b/test/compile_errors/stage1/obj/struct_init_syntax_for_array.zig
@@ -3,6 +3,8 @@ comptime {
     _ = foo;
 }
 
-// struct init syntax for array
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:13: error: initializing array with struct syntax
diff --git a/test/compile_errors/stage1/obj/struct_with_declarations_unavailable_for_reify_type.zig b/test/compile_errors/stage1/obj/struct_with_declarations_unavailable_for_reify_type.zig
index 656a9b9f62..409020ca25 100644
--- a/test/compile_errors/stage1/obj/struct_with_declarations_unavailable_for_reify_type.zig
+++ b/test/compile_errors/stage1/obj/struct_with_declarations_unavailable_for_reify_type.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     _ = @Type(@typeInfo(struct { const foo = 1; }));
 }
 
-// struct with declarations unavailable for @Type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: Type.Struct.decls must be empty for @Type
diff --git a/test/compile_errors/stage1/obj/struct_with_invalid_field.zig b/test/compile_errors/stage1/obj/struct_with_invalid_field.zig
index a2a632fbd9..dcc9d26f65 100644
--- a/test/compile_errors/stage1/obj/struct_with_invalid_field.zig
+++ b/test/compile_errors/stage1/obj/struct_with_invalid_field.zig
@@ -23,6 +23,8 @@ export fn entry() void {
     _ = a;
 }
 
-// struct with invalid field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:14:17: error: use of undeclared identifier 'HeaderValue'
diff --git a/test/compile_errors/stage1/obj/sub_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/sub_assign_on_undefined_value.zig
index 01ef9313e5..74b705a154 100644
--- a/test/compile_errors/stage1/obj/sub_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/sub_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a -= a;
 }
 
-// sub assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/sub_on_undefined_value.zig b/test/compile_errors/stage1/obj/sub_on_undefined_value.zig
index 80746abf0e..08c590ee3f 100644
--- a/test/compile_errors/stage1/obj/sub_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/sub_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a - a;
 }
 
-// sub on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/sub_overflow_in_function_evaluation.zig b/test/compile_errors/stage1/obj/sub_overflow_in_function_evaluation.zig
index 1084f1a111..dc259e6dcf 100644
--- a/test/compile_errors/stage1/obj/sub_overflow_in_function_evaluation.zig
+++ b/test/compile_errors/stage1/obj/sub_overflow_in_function_evaluation.zig
@@ -5,6 +5,8 @@ fn sub(a: u16, b: u16) u16 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(y)); }
 
-// sub overflow in function evaluation
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:14: error: operation caused overflow
diff --git a/test/compile_errors/stage1/obj/sub_wrap_assign_on_undefined_value.zig b/test/compile_errors/stage1/obj/sub_wrap_assign_on_undefined_value.zig
index 3c7fd4faa5..41aa1ca14b 100644
--- a/test/compile_errors/stage1/obj/sub_wrap_assign_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/sub_wrap_assign_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     a -%= a;
 }
 
-// sub wrap assign on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/sub_wrap_on_undefined_value.zig b/test/compile_errors/stage1/obj/sub_wrap_on_undefined_value.zig
index 367b4c9c0e..68e4e78512 100644
--- a/test/compile_errors/stage1/obj/sub_wrap_on_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/sub_wrap_on_undefined_value.zig
@@ -3,6 +3,8 @@ comptime {
     _ = a -% a;
 }
 
-// sub wrap on undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/suspend_inside_suspend_block.zig b/test/compile_errors/stage1/obj/suspend_inside_suspend_block.zig
index 2e807268ce..4adffd2f25 100644
--- a/test/compile_errors/stage1/obj/suspend_inside_suspend_block.zig
+++ b/test/compile_errors/stage1/obj/suspend_inside_suspend_block.zig
@@ -8,7 +8,9 @@ fn foo() void {
     }
 }
 
-// suspend inside suspend block
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:9: error: cannot suspend inside suspend block
 // tmp.zig:5:5: note: other suspend block here
diff --git a/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong.zig b/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong.zig
index c5db39f5b2..056aebe3dd 100644
--- a/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong.zig
@@ -16,7 +16,9 @@ fn f(n: Number) i32 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(f)); }
 
-// switch expression - duplicate enumeration prong
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:13:15: error: duplicate switch value
 // tmp.zig:10:15: note: other value here
diff --git a/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong_when_else_present.zig b/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong_when_else_present.zig
index 22a0c189c1..4d891c3917 100644
--- a/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong_when_else_present.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-duplicate_enumeration_prong_when_else_present.zig
@@ -17,7 +17,9 @@ fn f(n: Number) i32 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(f)); }
 
-// switch expression - duplicate enumeration prong when else present
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:13:15: error: duplicate switch value
 // tmp.zig:10:15: note: other value here
diff --git a/test/compile_errors/stage1/obj/switch_expression-duplicate_or_overlapping_integer_value.zig b/test/compile_errors/stage1/obj/switch_expression-duplicate_or_overlapping_integer_value.zig
index 06ef7de62e..2810bc13e1 100644
--- a/test/compile_errors/stage1/obj/switch_expression-duplicate_or_overlapping_integer_value.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-duplicate_or_overlapping_integer_value.zig
@@ -8,7 +8,9 @@ fn foo(x: u8) u8 {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// switch expression - duplicate or overlapping integer value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:9: error: duplicate switch value
 // tmp.zig:5:14: note: previous value here
diff --git a/test/compile_errors/stage1/obj/switch_expression-duplicate_type.zig b/test/compile_errors/stage1/obj/switch_expression-duplicate_type.zig
index 9ac9feaeaf..b84c4622a2 100644
--- a/test/compile_errors/stage1/obj/switch_expression-duplicate_type.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-duplicate_type.zig
@@ -9,7 +9,9 @@ fn foo(comptime T: type, x: T) u8 {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(foo(u32, 0))); }
 
-// switch expression - duplicate type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:9: error: duplicate switch value
 // tmp.zig:4:9: note: previous value here
diff --git a/test/compile_errors/stage1/obj/switch_expression-duplicate_type_struct_alias.zig b/test/compile_errors/stage1/obj/switch_expression-duplicate_type_struct_alias.zig
index b92336cac5..057e674e5a 100644
--- a/test/compile_errors/stage1/obj/switch_expression-duplicate_type_struct_alias.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-duplicate_type_struct_alias.zig
@@ -13,7 +13,9 @@ fn foo(comptime T: type, x: T) u8 {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(foo(u32, 0))); }
 
-// switch expression - duplicate type (struct alias)
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:10:9: error: duplicate switch value
 // tmp.zig:8:9: note: previous value here
diff --git a/test/compile_errors/stage1/obj/switch_expression-missing_enumeration_prong.zig b/test/compile_errors/stage1/obj/switch_expression-missing_enumeration_prong.zig
index b6cd60c22b..1a13730223 100644
--- a/test/compile_errors/stage1/obj/switch_expression-missing_enumeration_prong.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-missing_enumeration_prong.zig
@@ -14,6 +14,8 @@ fn f(n: Number) i32 {
 
 export fn entry() usize { return @sizeOf(@TypeOf(f)); }
 
-// switch expression - missing enumeration prong
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:8:5: error: enumeration value 'Number.Four' not handled in switch
diff --git a/test/compile_errors/stage1/obj/switch_expression-multiple_else_prongs.zig b/test/compile_errors/stage1/obj/switch_expression-multiple_else_prongs.zig
index 6a7e274b56..8267222092 100644
--- a/test/compile_errors/stage1/obj/switch_expression-multiple_else_prongs.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-multiple_else_prongs.zig
@@ -9,6 +9,8 @@ export fn entry() void {
     f(1234);
 }
 
-// switch expression - multiple else prongs
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:9: error: multiple else prongs in switch expression
diff --git a/test/compile_errors/stage1/obj/switch_expression-non_exhaustive_integer_prongs.zig b/test/compile_errors/stage1/obj/switch_expression-non_exhaustive_integer_prongs.zig
index 88fb8548de..940338edb9 100644
--- a/test/compile_errors/stage1/obj/switch_expression-non_exhaustive_integer_prongs.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-non_exhaustive_integer_prongs.zig
@@ -5,6 +5,8 @@ fn foo(x: u8) void {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// switch expression - non exhaustive integer prongs
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: switch must handle all possibilities
diff --git a/test/compile_errors/stage1/obj/switch_expression-switch_on_pointer_type_with_no_else.zig b/test/compile_errors/stage1/obj/switch_expression-switch_on_pointer_type_with_no_else.zig
index ec7565b882..6a357beabe 100644
--- a/test/compile_errors/stage1/obj/switch_expression-switch_on_pointer_type_with_no_else.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-switch_on_pointer_type_with_no_else.zig
@@ -6,6 +6,8 @@ fn foo(x: *u8) void {
 const y: u8 = 100;
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// switch expression - switch on pointer type with no else
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: else prong required when switching on type '*u8'
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_bool.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_bool.zig
index 8c36a3c289..2ee39f1531 100644
--- a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_bool.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_bool.zig
@@ -7,6 +7,8 @@ fn foo(x: bool) void {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// switch expression - unreachable else prong (bool)
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_enum.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_enum.zig
index 8207d05234..bcf840ab97 100644
--- a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_enum.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_enum.zig
@@ -17,6 +17,8 @@ fn foo(x: u8) void {
 
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// switch expression - unreachable else prong (enum)
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:14:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_i8.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_i8.zig
index 8750e57fae..f0c9d7a08a 100644
--- a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_i8.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_i8.zig
@@ -10,6 +10,8 @@ fn foo(x: i8) void {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// switch expression - unreachable else prong (range i8)
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:8:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_u8.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_u8.zig
index 280663ae51..9342ce8c32 100644
--- a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_u8.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_range_u8.zig
@@ -10,6 +10,8 @@ fn foo(x: u8) void {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// switch expression - unreachable else prong (range u8)
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:8:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u1.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u1.zig
index 58c4f378bf..90abf5074b 100644
--- a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u1.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u1.zig
@@ -7,6 +7,8 @@ fn foo(x: u1) void {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// switch expression - unreachable else prong (u1)
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u2.zig b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u2.zig
index ec1804316e..a523046e16 100644
--- a/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u2.zig
+++ b/test/compile_errors/stage1/obj/switch_expression-unreachable_else_prong_u2.zig
@@ -9,6 +9,8 @@ fn foo(x: u2) void {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(foo)); }
 
-// switch expression - unreachable else prong (u2)
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:9: error: unreachable else prong, all cases already handled
diff --git a/test/compile_errors/stage1/obj/switch_on_enum_with_1_field_with_no_prongs.zig b/test/compile_errors/stage1/obj/switch_on_enum_with_1_field_with_no_prongs.zig
index fbfc039f59..97f7de121d 100644
--- a/test/compile_errors/stage1/obj/switch_on_enum_with_1_field_with_no_prongs.zig
+++ b/test/compile_errors/stage1/obj/switch_on_enum_with_1_field_with_no_prongs.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     switch (f) {}
 }
 
-// switch on enum with 1 field with no prongs
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:5: error: enumeration value 'Foo.M' not handled in switch
diff --git a/test/compile_errors/stage1/obj/switch_on_union_with_no_attached_enum.zig b/test/compile_errors/stage1/obj/switch_on_union_with_no_attached_enum.zig
index f1ae750b4b..684861a898 100644
--- a/test/compile_errors/stage1/obj/switch_on_union_with_no_attached_enum.zig
+++ b/test/compile_errors/stage1/obj/switch_on_union_with_no_attached_enum.zig
@@ -14,7 +14,9 @@ fn foo(a: *const Payload) void {
     }
 }
 
-// switch on union with no attached enum
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:11:14: error: switch on union which has no attached enum
 // tmp.zig:1:17: note: consider 'union(enum)' here
diff --git a/test/compile_errors/stage1/obj/switch_with_invalid_expression_parameter.zig b/test/compile_errors/stage1/obj/switch_with_invalid_expression_parameter.zig
index f65879bc7a..1eb74519f5 100644
--- a/test/compile_errors/stage1/obj/switch_with_invalid_expression_parameter.zig
+++ b/test/compile_errors/stage1/obj/switch_with_invalid_expression_parameter.zig
@@ -10,6 +10,8 @@ fn Test(comptime T: type) void {
     _ = x;
 }
 
-// switch with invalid expression parameter
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:17: error: switch on type 'type' provides no expression parameter
diff --git a/test/compile_errors/stage1/obj/switch_with_overlapping_case_ranges.zig b/test/compile_errors/stage1/obj/switch_with_overlapping_case_ranges.zig
index 2818d766a7..1b03d3fe54 100644
--- a/test/compile_errors/stage1/obj/switch_with_overlapping_case_ranges.zig
+++ b/test/compile_errors/stage1/obj/switch_with_overlapping_case_ranges.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     }
 }
 
-// switch with overlapping case ranges
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:9: error: duplicate switch value
diff --git a/test/compile_errors/stage1/obj/tagName_used_on_union_with_no_associated_enum_tag.zig b/test/compile_errors/stage1/obj/tagName_used_on_union_with_no_associated_enum_tag.zig
index bd03a97cfd..efd9b8ceef 100644
--- a/test/compile_errors/stage1/obj/tagName_used_on_union_with_no_associated_enum_tag.zig
+++ b/test/compile_errors/stage1/obj/tagName_used_on_union_with_no_associated_enum_tag.zig
@@ -8,7 +8,9 @@ export fn entry() void {
     _ = tagName;
 }
 
-// @tagName used on union with no associated enum tag
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:7:19: error: union has no associated enum
 // tmp.zig:1:18: note: declared here
diff --git a/test/compile_errors/stage1/obj/take_slice_of_invalid_dereference.zig b/test/compile_errors/stage1/obj/take_slice_of_invalid_dereference.zig
index 9beda30e2f..c039be3737 100644
--- a/test/compile_errors/stage1/obj/take_slice_of_invalid_dereference.zig
+++ b/test/compile_errors/stage1/obj/take_slice_of_invalid_dereference.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// take slice of invalid dereference
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:18: error: attempt to dereference non-pointer type 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/taking_bit_offset_of_void_field_in_struct.zig b/test/compile_errors/stage1/obj/taking_bit_offset_of_void_field_in_struct.zig
index 936a110a61..e404c3bdd6 100644
--- a/test/compile_errors/stage1/obj/taking_bit_offset_of_void_field_in_struct.zig
+++ b/test/compile_errors/stage1/obj/taking_bit_offset_of_void_field_in_struct.zig
@@ -6,6 +6,8 @@ export fn foo() void {
     _ = fieldOffset;
 }
 
-// taking bit offset of void field in struct
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:45: error: zero-bit field 'val' in struct 'Empty' has no offset
diff --git a/test/compile_errors/stage1/obj/taking_byte_offset_of_void_field_in_struct.zig b/test/compile_errors/stage1/obj/taking_byte_offset_of_void_field_in_struct.zig
index d71dbc1502..eb7d83efff 100644
--- a/test/compile_errors/stage1/obj/taking_byte_offset_of_void_field_in_struct.zig
+++ b/test/compile_errors/stage1/obj/taking_byte_offset_of_void_field_in_struct.zig
@@ -6,6 +6,8 @@ export fn foo() void {
     _ = fieldOffset;
 }
 
-// taking byte offset of void field in struct
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:42: error: zero-bit field 'val' in struct 'Empty' has no offset
diff --git a/test/compile_errors/stage1/obj/threadlocal_qualifier_on_const.zig b/test/compile_errors/stage1/obj/threadlocal_qualifier_on_const.zig
index fa99e592ae..d34ba06879 100644
--- a/test/compile_errors/stage1/obj/threadlocal_qualifier_on_const.zig
+++ b/test/compile_errors/stage1/obj/threadlocal_qualifier_on_const.zig
@@ -3,6 +3,8 @@ export fn entry() i32 {
     return x;
 }
 
-// threadlocal qualifier on const
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:1: error: threadlocal variable cannot be constant
diff --git a/test/compile_errors/stage1/obj/top_level_decl_dependency_loop.zig b/test/compile_errors/stage1/obj/top_level_decl_dependency_loop.zig
index 4ecdc6f67d..ac70285c9c 100644
--- a/test/compile_errors/stage1/obj/top_level_decl_dependency_loop.zig
+++ b/test/compile_errors/stage1/obj/top_level_decl_dependency_loop.zig
@@ -5,6 +5,8 @@ export fn entry() void {
     _ = c;
 }
 
-// top level decl dependency loop
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:19: error: dependency loop detected
diff --git a/test/compile_errors/stage1/obj/truncate_sign_mismatch.zig b/test/compile_errors/stage1/obj/truncate_sign_mismatch.zig
index a60ca4bc7a..8434d9ed16 100644
--- a/test/compile_errors/stage1/obj/truncate_sign_mismatch.zig
+++ b/test/compile_errors/stage1/obj/truncate_sign_mismatch.zig
@@ -15,7 +15,9 @@ export fn entry4() u8 {
     return @truncate(u8, x);
 }
 
-// truncate sign mismatch
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:26: error: expected signed integer type, found 'u32'
 // tmp.zig:7:26: error: expected unsigned integer type, found 'i32'
diff --git a/test/compile_errors/stage1/obj/truncate_undefined_value.zig b/test/compile_errors/stage1/obj/truncate_undefined_value.zig
index 9d3913f9c3..67a1f17ba7 100644
--- a/test/compile_errors/stage1/obj/truncate_undefined_value.zig
+++ b/test/compile_errors/stage1/obj/truncate_undefined_value.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = z;
 }
 
-// @truncate undefined value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:27: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/try_in_function_with_non_error_return_type.zig b/test/compile_errors/stage1/obj/try_in_function_with_non_error_return_type.zig
index d799f769b6..c00fa2709f 100644
--- a/test/compile_errors/stage1/obj/try_in_function_with_non_error_return_type.zig
+++ b/test/compile_errors/stage1/obj/try_in_function_with_non_error_return_type.zig
@@ -3,6 +3,8 @@ export fn f() void {
 }
 fn something() anyerror!void { }
 
-// try in function with non error return type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: expected type 'void', found 'anyerror'
diff --git a/test/compile_errors/stage1/obj/type_checking_function_pointers.zig b/test/compile_errors/stage1/obj/type_checking_function_pointers.zig
index d9bcde6bab..b88b6bdb52 100644
--- a/test/compile_errors/stage1/obj/type_checking_function_pointers.zig
+++ b/test/compile_errors/stage1/obj/type_checking_function_pointers.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     a(c);
 }
 
-// type checking function pointers
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:7: error: expected type 'fn(*const u8) void', found 'fn(u8) void'
diff --git a/test/compile_errors/stage1/obj/type_variables_must_be_constant.zig b/test/compile_errors/stage1/obj/type_variables_must_be_constant.zig
index 33846d6da8..f8cadf8520 100644
--- a/test/compile_errors/stage1/obj/type_variables_must_be_constant.zig
+++ b/test/compile_errors/stage1/obj/type_variables_must_be_constant.zig
@@ -3,6 +3,8 @@ export fn entry() foo {
     return 1;
 }
 
-// type variables must be constant
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:1: error: variable of type 'type' must be constant
diff --git a/test/compile_errors/stage1/obj/undeclared_identifier.zig b/test/compile_errors/stage1/obj/undeclared_identifier.zig
index 36f46a22f4..297a618eb8 100644
--- a/test/compile_errors/stage1/obj/undeclared_identifier.zig
+++ b/test/compile_errors/stage1/obj/undeclared_identifier.zig
@@ -4,6 +4,8 @@ export fn a() void {
     c;
 }
 
-// undeclared identifier
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: use of undeclared identifier 'b'
diff --git a/test/compile_errors/stage1/obj/undeclared_identifier_error_should_mark_fn_as_impure.zig b/test/compile_errors/stage1/obj/undeclared_identifier_error_should_mark_fn_as_impure.zig
index fa629bdcb8..697b7ccb55 100644
--- a/test/compile_errors/stage1/obj/undeclared_identifier_error_should_mark_fn_as_impure.zig
+++ b/test/compile_errors/stage1/obj/undeclared_identifier_error_should_mark_fn_as_impure.zig
@@ -5,6 +5,8 @@ fn test_a_thing() void {
     bad_fn_call();
 }
 
-// undeclared identifier error should mark fn as impure
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:5: error: use of undeclared identifier 'bad_fn_call'
diff --git a/test/compile_errors/stage1/obj/undeclared_identifier_in_unanalyzed_branch.zig b/test/compile_errors/stage1/obj/undeclared_identifier_in_unanalyzed_branch.zig
index 55d952e0fd..2efa8ca115 100644
--- a/test/compile_errors/stage1/obj/undeclared_identifier_in_unanalyzed_branch.zig
+++ b/test/compile_errors/stage1/obj/undeclared_identifier_in_unanalyzed_branch.zig
@@ -4,6 +4,8 @@ export fn a() void {
     }
 }
 
-// undeclared identifier in unanalyzed branch
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: use of undeclared identifier 'lol_this_doesnt_exist'
diff --git a/test/compile_errors/stage1/obj/undefined_as_field_type_is_rejected.zig b/test/compile_errors/stage1/obj/undefined_as_field_type_is_rejected.zig
index 4035955387..b6eb059661 100644
--- a/test/compile_errors/stage1/obj/undefined_as_field_type_is_rejected.zig
+++ b/test/compile_errors/stage1/obj/undefined_as_field_type_is_rejected.zig
@@ -6,6 +6,8 @@ export fn entry1() void {
     _ = foo;
 }
 
-// undefined as field type is rejected
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:8: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/undefined_function_call.zig b/test/compile_errors/stage1/obj/undefined_function_call.zig
index ebf76aafbd..a9627961fe 100644
--- a/test/compile_errors/stage1/obj/undefined_function_call.zig
+++ b/test/compile_errors/stage1/obj/undefined_function_call.zig
@@ -2,6 +2,8 @@ export fn a() void {
     b();
 }
 
-// undefined function call
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: use of undeclared identifier 'b'
diff --git a/test/compile_errors/stage1/obj/underscore_is_not_a_declarable_symbol.zig b/test/compile_errors/stage1/obj/underscore_is_not_a_declarable_symbol.zig
index bfcfbc3bcc..f4318af8fd 100644
--- a/test/compile_errors/stage1/obj/underscore_is_not_a_declarable_symbol.zig
+++ b/test/compile_errors/stage1/obj/underscore_is_not_a_declarable_symbol.zig
@@ -3,6 +3,8 @@ export fn f1() usize {
     return _;
 }
 
-// `_` is not a declarable symbol
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:9: error: '_' used as an identifier without @"_" syntax
diff --git a/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_for.zig b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_for.zig
index be2ae559f3..fe89c8372d 100644
--- a/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_for.zig
+++ b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_for.zig
@@ -6,6 +6,8 @@ export fn returns() void {
     }
 }
 
-// `_` should not be usable inside for
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:20: error: '_' used as an identifier without @"_" syntax
diff --git a/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while.zig b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while.zig
index d93ed28c9e..7f694e0603 100644
--- a/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while.zig
+++ b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while.zig
@@ -9,6 +9,8 @@ fn optionalReturn() ?u32 {
     return 1;
 }
 
-// `_` should not be usable inside while
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:20: error: '_' used as an identifier without @"_" syntax
diff --git a/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while_else.zig b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while_else.zig
index e1e4c7b4c1..87a705ee69 100644
--- a/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while_else.zig
+++ b/test/compile_errors/stage1/obj/underscore_should_not_be_usable_inside_while_else.zig
@@ -11,6 +11,8 @@ fn optionalReturnError() !?u32 {
     return error.optionalReturnError;
 }
 
-// `_` should not be usable inside while else
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:17: error: '_' used as an identifier without @"_" syntax
diff --git a/test/compile_errors/stage1/obj/union_auto-enum_value_already_taken.zig b/test/compile_errors/stage1/obj/union_auto-enum_value_already_taken.zig
index 377290bd7e..3b00f95ff9 100644
--- a/test/compile_errors/stage1/obj/union_auto-enum_value_already_taken.zig
+++ b/test/compile_errors/stage1/obj/union_auto-enum_value_already_taken.zig
@@ -10,7 +10,9 @@ export fn entry() void {
     _ = x;
 }
 
-// union auto-enum value already taken
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:9: error: enum tag value 60 already taken
 // tmp.zig:4:9: note: other occurrence here
diff --git a/test/compile_errors/stage1/obj/union_enum_field_does_not_match_enum.zig b/test/compile_errors/stage1/obj/union_enum_field_does_not_match_enum.zig
index a924932c9f..38260091dc 100644
--- a/test/compile_errors/stage1/obj/union_enum_field_does_not_match_enum.zig
+++ b/test/compile_errors/stage1/obj/union_enum_field_does_not_match_enum.zig
@@ -14,7 +14,9 @@ export fn entry() void {
     _ = a;
 }
 
-// union enum field does not match enum
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:10:5: error: enum field not found: 'D'
 // tmp.zig:1:16: note: enum declared here
diff --git a/test/compile_errors/stage1/obj/union_fields_with_value_assignments.zig b/test/compile_errors/stage1/obj/union_fields_with_value_assignments.zig
index 0cf67a0eca..94568d55c3 100644
--- a/test/compile_errors/stage1/obj/union_fields_with_value_assignments.zig
+++ b/test/compile_errors/stage1/obj/union_fields_with_value_assignments.zig
@@ -6,7 +6,9 @@ export fn entry() void {
     _ = x;
 }
 
-// union fields with value assignments
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:24: error: explicitly valued tagged union missing integer tag type
 // tmp.zig:2:14: note: tag value specified here
diff --git a/test/compile_errors/stage1/obj/union_with_0_fields.zig b/test/compile_errors/stage1/obj/union_with_0_fields.zig
index 36086e8cce..a6f3d69faa 100644
--- a/test/compile_errors/stage1/obj/union_with_0_fields.zig
+++ b/test/compile_errors/stage1/obj/union_with_0_fields.zig
@@ -1,5 +1,7 @@
 const Foo = union {};
 
-// union with 0 fields
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:13: error: union declarations must have at least one tag
diff --git a/test/compile_errors/stage1/obj/union_with_specified_enum_omits_field.zig b/test/compile_errors/stage1/obj/union_with_specified_enum_omits_field.zig
index c1c1d38f02..0bb677a18c 100644
--- a/test/compile_errors/stage1/obj/union_with_specified_enum_omits_field.zig
+++ b/test/compile_errors/stage1/obj/union_with_specified_enum_omits_field.zig
@@ -11,7 +11,9 @@ export fn entry() usize {
     return @sizeOf(Payload);
 }
 
-// union with specified enum omits field
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:17: error: enum field missing: 'C'
 // tmp.zig:4:5: note: declared here
diff --git a/test/compile_errors/stage1/obj/union_with_too_small_explicit_signed_tag_type.zig b/test/compile_errors/stage1/obj/union_with_too_small_explicit_signed_tag_type.zig
index a3e75c25f6..97f4d48f6b 100644
--- a/test/compile_errors/stage1/obj/union_with_too_small_explicit_signed_tag_type.zig
+++ b/test/compile_errors/stage1/obj/union_with_too_small_explicit_signed_tag_type.zig
@@ -8,7 +8,9 @@ export fn entry() void {
     _ = U{ .D = 1 };
 }
 
-// union with too small explicit signed tag type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:22: error: specified integer tag type cannot represent every field
 // tmp.zig:1:22: note: type i2 cannot fit values in range 0...3
diff --git a/test/compile_errors/stage1/obj/union_with_too_small_explicit_unsigned_tag_type.zig b/test/compile_errors/stage1/obj/union_with_too_small_explicit_unsigned_tag_type.zig
index 6f13dcda8a..c1496ade86 100644
--- a/test/compile_errors/stage1/obj/union_with_too_small_explicit_unsigned_tag_type.zig
+++ b/test/compile_errors/stage1/obj/union_with_too_small_explicit_unsigned_tag_type.zig
@@ -9,7 +9,9 @@ export fn entry() void {
     _ = U{ .E = 1 };
 }
 
-// union with too small explicit unsigned tag type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:22: error: specified integer tag type cannot represent every field
 // tmp.zig:1:22: note: type u2 cannot fit values in range 0...4
diff --git a/test/compile_errors/stage1/obj/unknown_length_pointer_to_opaque.zig b/test/compile_errors/stage1/obj/unknown_length_pointer_to_opaque.zig
index a847bae599..d155b986d7 100644
--- a/test/compile_errors/stage1/obj/unknown_length_pointer_to_opaque.zig
+++ b/test/compile_errors/stage1/obj/unknown_length_pointer_to_opaque.zig
@@ -1,5 +1,7 @@
 export const T = [*]opaque {};
 
-// unknown length pointer to opaque
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:21: error: unknown-length pointer to opaque
diff --git a/test/compile_errors/stage1/obj/unreachable_code-double_break.zig b/test/compile_errors/stage1/obj/unreachable_code-double_break.zig
index b030c1d24d..0a19337af8 100644
--- a/test/compile_errors/stage1/obj/unreachable_code-double_break.zig
+++ b/test/compile_errors/stage1/obj/unreachable_code-double_break.zig
@@ -4,7 +4,9 @@ export fn a() void {
     };
 }
 
-// unreachable code - double break
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: unreachable code
 // tmp.zig:3:20: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/unreachable_code-nested_returns.zig b/test/compile_errors/stage1/obj/unreachable_code-nested_returns.zig
index 7bfa8eef64..8a80fcd161 100644
--- a/test/compile_errors/stage1/obj/unreachable_code-nested_returns.zig
+++ b/test/compile_errors/stage1/obj/unreachable_code-nested_returns.zig
@@ -2,7 +2,9 @@ export fn a() i32 {
     return return 1;
 }
 
-// unreachable code - nested returns
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: unreachable code
 // tmp.zig:2:12: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/unreachable_code.zig b/test/compile_errors/stage1/obj/unreachable_code.zig
index 779cd90379..30a92d06bf 100644
--- a/test/compile_errors/stage1/obj/unreachable_code.zig
+++ b/test/compile_errors/stage1/obj/unreachable_code.zig
@@ -5,7 +5,9 @@ export fn a() void {
 
 fn b() void {}
 
-// unreachable code
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:6: error: unreachable code
 // tmp.zig:2:5: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/unreachable_executed_at_comptime.zig b/test/compile_errors/stage1/obj/unreachable_executed_at_comptime.zig
index 857ab0417f..34cb354e94 100644
--- a/test/compile_errors/stage1/obj/unreachable_executed_at_comptime.zig
+++ b/test/compile_errors/stage1/obj/unreachable_executed_at_comptime.zig
@@ -8,7 +8,9 @@ export fn entry() void {
     _ = foo(-42);
 }
 
-// unreachable executed at comptime
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:9: error: reached unreachable code
 // tmp.zig:8:12: note: called from here
diff --git a/test/compile_errors/stage1/obj/unreachable_parameter.zig b/test/compile_errors/stage1/obj/unreachable_parameter.zig
index 3feed62a1e..296194f7e3 100644
--- a/test/compile_errors/stage1/obj/unreachable_parameter.zig
+++ b/test/compile_errors/stage1/obj/unreachable_parameter.zig
@@ -1,6 +1,8 @@
 fn f(a: noreturn) void { _ = a; }
 export fn entry() void { f(); }
 
-// unreachable parameter
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:9: error: parameter of type 'noreturn' not allowed
diff --git a/test/compile_errors/stage1/obj/unreachable_variable.zig b/test/compile_errors/stage1/obj/unreachable_variable.zig
index 8e053acd06..7f822a8bce 100644
--- a/test/compile_errors/stage1/obj/unreachable_variable.zig
+++ b/test/compile_errors/stage1/obj/unreachable_variable.zig
@@ -3,6 +3,8 @@ export fn f() void {
     _ = a;
 }
 
-// unreachable variable
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:25: error: expected type 'noreturn', found 'void'
diff --git a/test/compile_errors/stage1/obj/unreachable_with_return.zig b/test/compile_errors/stage1/obj/unreachable_with_return.zig
index ac9ecc93e3..6410d24913 100644
--- a/test/compile_errors/stage1/obj/unreachable_with_return.zig
+++ b/test/compile_errors/stage1/obj/unreachable_with_return.zig
@@ -1,6 +1,8 @@
 fn a() noreturn {return;}
 export fn entry() void { a(); }
 
-// unreachable with return
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:18: error: expected type 'noreturn', found 'void'
diff --git a/test/compile_errors/stage1/obj/unsupported_modifier_at_start_of_asm_output_constraint.zig b/test/compile_errors/stage1/obj/unsupported_modifier_at_start_of_asm_output_constraint.zig
index c85850a61b..7c70fc5095 100644
--- a/test/compile_errors/stage1/obj/unsupported_modifier_at_start_of_asm_output_constraint.zig
+++ b/test/compile_errors/stage1/obj/unsupported_modifier_at_start_of_asm_output_constraint.zig
@@ -3,6 +3,8 @@ export fn foo() void {
     asm volatile ("" : [baz]"+r"(bar) : : "");
 }
 
-// unsupported modifier at start of asm output constraint
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:5: error: invalid modifier starting output constraint for 'baz': '+', only '=' is supported. Compiler TODO: see https://github.com/ziglang/zig/issues/215
diff --git a/test/compile_errors/stage1/obj/unused_variable_error_on_errdefer.zig b/test/compile_errors/stage1/obj/unused_variable_error_on_errdefer.zig
index eb92776938..b85d5729dc 100644
--- a/test/compile_errors/stage1/obj/unused_variable_error_on_errdefer.zig
+++ b/test/compile_errors/stage1/obj/unused_variable_error_on_errdefer.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     foo() catch unreachable;
 }
 
-// unused variable error on errdefer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: unused variable: 'a'
diff --git a/test/compile_errors/stage1/obj/use_anyopaque_as_return_type_of_fn_ptr.zig b/test/compile_errors/stage1/obj/use_anyopaque_as_return_type_of_fn_ptr.zig
index f54bc14914..ef2787ca75 100644
--- a/test/compile_errors/stage1/obj/use_anyopaque_as_return_type_of_fn_ptr.zig
+++ b/test/compile_errors/stage1/obj/use_anyopaque_as_return_type_of_fn_ptr.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = a;
 }
 
-// use anyopaque as return type of fn ptr
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:20: error: return type cannot be opaque
diff --git a/test/compile_errors/stage1/obj/use_implicit_casts_to_assign_null_to_non-nullable_pointer.zig b/test/compile_errors/stage1/obj/use_implicit_casts_to_assign_null_to_non-nullable_pointer.zig
index a8e01dbde0..4263f38e3e 100644
--- a/test/compile_errors/stage1/obj/use_implicit_casts_to_assign_null_to_non-nullable_pointer.zig
+++ b/test/compile_errors/stage1/obj/use_implicit_casts_to_assign_null_to_non-nullable_pointer.zig
@@ -7,6 +7,8 @@ export fn entry() void {
     _ = y;
 }
 
-// use implicit casts to assign null to non-nullable pointer
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:4:23: error: expected type '*?*i32', found '**i32'
diff --git a/test/compile_errors/stage1/obj/use_invalid_number_literal_as_array_index.zig b/test/compile_errors/stage1/obj/use_invalid_number_literal_as_array_index.zig
index 5ec655737e..b1d0aaa6f4 100644
--- a/test/compile_errors/stage1/obj/use_invalid_number_literal_as_array_index.zig
+++ b/test/compile_errors/stage1/obj/use_invalid_number_literal_as_array_index.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     _ = arr;
 }
 
-// use invalid number literal as array index
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:1: error: unable to infer variable type
diff --git a/test/compile_errors/stage1/obj/use_of_comptime-known_undefined_function_value.zig b/test/compile_errors/stage1/obj/use_of_comptime-known_undefined_function_value.zig
index 5facc7e753..3500b13dfc 100644
--- a/test/compile_errors/stage1/obj/use_of_comptime-known_undefined_function_value.zig
+++ b/test/compile_errors/stage1/obj/use_of_comptime-known_undefined_function_value.zig
@@ -6,6 +6,8 @@ export fn entry() void {
     command.exec();
 }
 
-// use of comptime-known undefined function value
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:12: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/use_of_undeclared_identifier.zig b/test/compile_errors/stage1/obj/use_of_undeclared_identifier.zig
index e36453acc7..c1297731a3 100644
--- a/test/compile_errors/stage1/obj/use_of_undeclared_identifier.zig
+++ b/test/compile_errors/stage1/obj/use_of_undeclared_identifier.zig
@@ -2,6 +2,8 @@ export fn f() void {
     b = 3;
 }
 
-// use of undeclared identifier
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: use of undeclared identifier 'b'
diff --git a/test/compile_errors/stage1/obj/using_an_unknown_len_ptr_type_instead_of_array.zig b/test/compile_errors/stage1/obj/using_an_unknown_len_ptr_type_instead_of_array.zig
index 983995b098..3124b057a8 100644
--- a/test/compile_errors/stage1/obj/using_an_unknown_len_ptr_type_instead_of_array.zig
+++ b/test/compile_errors/stage1/obj/using_an_unknown_len_ptr_type_instead_of_array.zig
@@ -6,6 +6,8 @@ comptime {
     _ = resolutions;
 }
 
-// using an unknown len ptr type instead of array
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:21: error: expected array type or [_], found '[*][*]const u8'
diff --git a/test/compile_errors/stage1/obj/using_invalid_types_in_function_call_raises_an_error.zig b/test/compile_errors/stage1/obj/using_invalid_types_in_function_call_raises_an_error.zig
index 182b5c59b0..f1fda15ea7 100644
--- a/test/compile_errors/stage1/obj/using_invalid_types_in_function_call_raises_an_error.zig
+++ b/test/compile_errors/stage1/obj/using_invalid_types_in_function_call_raises_an_error.zig
@@ -4,6 +4,8 @@ export fn entry() void {
     func(MenuEffect.ThisDoesNotExist);
 }
 
-// using invalid types in function call raises an error
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:20: error: enum declarations must have at least one tag
diff --git a/test/compile_errors/stage1/obj/usingnamespace_with_wrong_type.zig b/test/compile_errors/stage1/obj/usingnamespace_with_wrong_type.zig
index a74a8e6124..86b5f0dcfb 100644
--- a/test/compile_errors/stage1/obj/usingnamespace_with_wrong_type.zig
+++ b/test/compile_errors/stage1/obj/usingnamespace_with_wrong_type.zig
@@ -1,5 +1,7 @@
 usingnamespace void;
 
-// usingnamespace with wrong type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:1: error: expected struct, enum, or union; found 'void'
diff --git a/test/compile_errors/stage1/obj/variable_has_wrong_type.zig b/test/compile_errors/stage1/obj/variable_has_wrong_type.zig
index 1e20dde269..52dcf150de 100644
--- a/test/compile_errors/stage1/obj/variable_has_wrong_type.zig
+++ b/test/compile_errors/stage1/obj/variable_has_wrong_type.zig
@@ -3,6 +3,8 @@ export fn f() i32 {
     return a;
 }
 
-// variable has wrong type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:12: error: expected type 'i32', found '*const [1:0]u8'
diff --git a/test/compile_errors/stage1/obj/variable_in_inline_assembly_template_cannot_be_found.zig b/test/compile_errors/stage1/obj/variable_in_inline_assembly_template_cannot_be_found.zig
new file mode 100644
index 0000000000..7636b501fd
--- /dev/null
+++ b/test/compile_errors/stage1/obj/variable_in_inline_assembly_template_cannot_be_found.zig
@@ -0,0 +1,12 @@
+export fn entry() void {
+    var sp = asm volatile ("mov %[foo], sp"
+        : [bar] "=r" (-> usize),
+    );
+    _ = sp;
+}
+
+// error
+// backend=stage1
+// target=x86_64-linux-gnu
+//
+// tmp.zig:2:14: error: could not find 'foo' in the inputs or outputs
diff --git a/test/compile_errors/stage1/obj/variable_initialization_compile_error_then_referenced.zig b/test/compile_errors/stage1/obj/variable_initialization_compile_error_then_referenced.zig
index d96b67bc3f..91b70481a1 100644
--- a/test/compile_errors/stage1/obj/variable_initialization_compile_error_then_referenced.zig
+++ b/test/compile_errors/stage1/obj/variable_initialization_compile_error_then_referenced.zig
@@ -12,6 +12,8 @@ export fn entry() void {
     _ = S;
 }
 
-// variable initialization compile error then referenced
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:12: error: use of undeclared identifier 'T'
diff --git a/test/compile_errors/stage1/obj/variable_with_type_noreturn.zig b/test/compile_errors/stage1/obj/variable_with_type_noreturn.zig
index b6cc65593b..e2ba9183be 100644
--- a/test/compile_errors/stage1/obj/variable_with_type_noreturn.zig
+++ b/test/compile_errors/stage1/obj/variable_with_type_noreturn.zig
@@ -2,7 +2,9 @@ export fn entry9() void {
     var z: noreturn = return;
 }
 
-// variable with type 'noreturn'
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:5: error: unreachable code
 // tmp.zig:2:23: note: control flow is diverted here
diff --git a/test/compile_errors/stage1/obj/vector_index_out_of_bounds.zig b/test/compile_errors/stage1/obj/vector_index_out_of_bounds.zig
index efdd8b5fe9..fdffd8b455 100644
--- a/test/compile_errors/stage1/obj/vector_index_out_of_bounds.zig
+++ b/test/compile_errors/stage1/obj/vector_index_out_of_bounds.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     _ = x;
 }
 
-// vector index out of bounds
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:62: error: index 3 outside vector of size 3
diff --git a/test/compile_errors/stage1/obj/volatile_on_global_assembly.zig b/test/compile_errors/stage1/obj/volatile_on_global_assembly.zig
index 8fc7ddfcc2..2157fe6a71 100644
--- a/test/compile_errors/stage1/obj/volatile_on_global_assembly.zig
+++ b/test/compile_errors/stage1/obj/volatile_on_global_assembly.zig
@@ -2,6 +2,8 @@ comptime {
     asm volatile ("");
 }
 
-// volatile on global assembly
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:9: error: volatile is meaningless on global assembly
diff --git a/test/compile_errors/stage1/obj/wasmMemoryGrow_is_a_compile_error_in_non-Wasm_targets.zig b/test/compile_errors/stage1/obj/wasmMemoryGrow_is_a_compile_error_in_non-Wasm_targets.zig
index 363b36a0af..6eda076f12 100644
--- a/test/compile_errors/stage1/obj/wasmMemoryGrow_is_a_compile_error_in_non-Wasm_targets.zig
+++ b/test/compile_errors/stage1/obj/wasmMemoryGrow_is_a_compile_error_in_non-Wasm_targets.zig
@@ -3,6 +3,8 @@ export fn foo() void {
     return;
 }
 
-// wasmMemoryGrow is a compile error in non-Wasm targets
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:9: error: @wasmMemoryGrow is a wasm32 feature only
diff --git a/test/compile_errors/stage1/obj/wasmMemorySize_is_a_compile_error_in_non-Wasm_targets.zig b/test/compile_errors/stage1/obj/wasmMemorySize_is_a_compile_error_in_non-Wasm_targets.zig
index 419173bd01..9bdf81073f 100644
--- a/test/compile_errors/stage1/obj/wasmMemorySize_is_a_compile_error_in_non-Wasm_targets.zig
+++ b/test/compile_errors/stage1/obj/wasmMemorySize_is_a_compile_error_in_non-Wasm_targets.zig
@@ -3,6 +3,8 @@ export fn foo() void {
     return;
 }
 
-// wasmMemorySize is a compile error in non-Wasm targets
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:9: error: @wasmMemorySize is a wasm32 feature only
diff --git a/test/compile_errors/stage1/obj/while_expected_bool_got_error_union.zig b/test/compile_errors/stage1/obj/while_expected_bool_got_error_union.zig
index e79296694d..9fc327e6c9 100644
--- a/test/compile_errors/stage1/obj/while_expected_bool_got_error_union.zig
+++ b/test/compile_errors/stage1/obj/while_expected_bool_got_error_union.zig
@@ -3,6 +3,8 @@ export fn foo() void {
 }
 fn bar() anyerror!i32 { return 1; }
 
-// while expected bool, got error union
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: expected type 'bool', found 'anyerror!i32'
diff --git a/test/compile_errors/stage1/obj/while_expected_bool_got_optional.zig b/test/compile_errors/stage1/obj/while_expected_bool_got_optional.zig
index 7a3d184a1d..5948d62786 100644
--- a/test/compile_errors/stage1/obj/while_expected_bool_got_optional.zig
+++ b/test/compile_errors/stage1/obj/while_expected_bool_got_optional.zig
@@ -3,6 +3,8 @@ export fn foo() void {
 }
 fn bar() ?i32 { return 1; }
 
-// while expected bool, got optional
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: expected type 'bool', found '?i32'
diff --git a/test/compile_errors/stage1/obj/while_expected_error_union_got_bool.zig b/test/compile_errors/stage1/obj/while_expected_error_union_got_bool.zig
index 8f92276af6..b8a72e9793 100644
--- a/test/compile_errors/stage1/obj/while_expected_error_union_got_bool.zig
+++ b/test/compile_errors/stage1/obj/while_expected_error_union_got_bool.zig
@@ -3,6 +3,8 @@ export fn foo() void {
 }
 fn bar() bool { return true; }
 
-// while expected error union, got bool
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: expected error union type, found 'bool'
diff --git a/test/compile_errors/stage1/obj/while_expected_error_union_got_optional.zig b/test/compile_errors/stage1/obj/while_expected_error_union_got_optional.zig
index a67bf1ae16..c933dc9509 100644
--- a/test/compile_errors/stage1/obj/while_expected_error_union_got_optional.zig
+++ b/test/compile_errors/stage1/obj/while_expected_error_union_got_optional.zig
@@ -3,6 +3,8 @@ export fn foo() void {
 }
 fn bar() ?i32 { return 1; }
 
-// while expected error union, got optional
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: expected error union type, found '?i32'
diff --git a/test/compile_errors/stage1/obj/while_expected_optional_got_bool.zig b/test/compile_errors/stage1/obj/while_expected_optional_got_bool.zig
index 6fc0d880ce..0458d1ba01 100644
--- a/test/compile_errors/stage1/obj/while_expected_optional_got_bool.zig
+++ b/test/compile_errors/stage1/obj/while_expected_optional_got_bool.zig
@@ -3,6 +3,8 @@ export fn foo() void {
 }
 fn bar() bool { return true; }
 
-// while expected optional, got bool
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: expected optional type, found 'bool'
diff --git a/test/compile_errors/stage1/obj/while_expected_optional_got_error_union.zig b/test/compile_errors/stage1/obj/while_expected_optional_got_error_union.zig
index 472b3b81bc..7cdbd2cccf 100644
--- a/test/compile_errors/stage1/obj/while_expected_optional_got_error_union.zig
+++ b/test/compile_errors/stage1/obj/while_expected_optional_got_error_union.zig
@@ -3,6 +3,8 @@ export fn foo() void {
 }
 fn bar() anyerror!i32 { return 1; }
 
-// while expected optional, got error union
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: expected optional type, found 'anyerror!i32'
diff --git a/test/compile_errors/stage1/obj/while_loop_body_expression_ignored.zig b/test/compile_errors/stage1/obj/while_loop_body_expression_ignored.zig
index 621c0d41d7..9542cbc62f 100644
--- a/test/compile_errors/stage1/obj/while_loop_body_expression_ignored.zig
+++ b/test/compile_errors/stage1/obj/while_loop_body_expression_ignored.zig
@@ -13,7 +13,9 @@ export fn f3() void {
     while (x) |_| returns() else |_| unreachable;
 }
 
-// while loop body expression ignored
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:25: error: expression value is ignored
 // tmp.zig:9:26: error: expression value is ignored
diff --git a/test/compile_errors/stage1/obj/write_to_const_global_variable.zig b/test/compile_errors/stage1/obj/write_to_const_global_variable.zig
index 327b3d02d0..4ce93e6b51 100644
--- a/test/compile_errors/stage1/obj/write_to_const_global_variable.zig
+++ b/test/compile_errors/stage1/obj/write_to_const_global_variable.zig
@@ -4,6 +4,8 @@ fn f() void {
 }
 export fn entry() void { f(); }
 
-// write to const global variable
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:9: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/obj/wrong_frame_type_used_for_async_call.zig b/test/compile_errors/stage1/obj/wrong_frame_type_used_for_async_call.zig
index ba150c45cc..c02c20f495 100644
--- a/test/compile_errors/stage1/obj/wrong_frame_type_used_for_async_call.zig
+++ b/test/compile_errors/stage1/obj/wrong_frame_type_used_for_async_call.zig
@@ -9,6 +9,8 @@ fn bar() void {
     suspend {}
 }
 
-// wrong frame type used for async call
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:13: error: expected type '*@Frame(bar)', found '*@Frame(foo)'
diff --git a/test/compile_errors/stage1/obj/wrong_function_type.zig b/test/compile_errors/stage1/obj/wrong_function_type.zig
index c2238bb649..58f4477601 100644
--- a/test/compile_errors/stage1/obj/wrong_function_type.zig
+++ b/test/compile_errors/stage1/obj/wrong_function_type.zig
@@ -4,6 +4,8 @@ fn b() i32 {return 1;}
 fn c() i32 {return 2;}
 export fn entry() usize { return @sizeOf(@TypeOf(fns)); }
 
-// wrong function type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:1:28: error: expected type 'fn() void', found 'fn() i32'
diff --git a/test/compile_errors/stage1/obj/wrong_initializer_for_union_payload_of_type_type.zig b/test/compile_errors/stage1/obj/wrong_initializer_for_union_payload_of_type_type.zig
index 1d56094b6d..2e7b8f2e40 100644
--- a/test/compile_errors/stage1/obj/wrong_initializer_for_union_payload_of_type_type.zig
+++ b/test/compile_errors/stage1/obj/wrong_initializer_for_union_payload_of_type_type.zig
@@ -9,6 +9,8 @@ export fn entry() void {
     v.u.A = U{ .A = i32 };
 }
 
-// wrong initializer for union payload of type 'type'
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:9:8: error: use of undefined value here causes undefined behavior
diff --git a/test/compile_errors/stage1/obj/wrong_number_of_arguments.zig b/test/compile_errors/stage1/obj/wrong_number_of_arguments.zig
index 4cb13fdd12..f25c9dae08 100644
--- a/test/compile_errors/stage1/obj/wrong_number_of_arguments.zig
+++ b/test/compile_errors/stage1/obj/wrong_number_of_arguments.zig
@@ -3,6 +3,8 @@ export fn a() void {
 }
 fn c(d: i32, e: i32, f: i32) void { _ = d; _ = e; _ = f; }
 
-// wrong number of arguments
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:6: error: expected 3 argument(s), found 1
diff --git a/test/compile_errors/stage1/obj/wrong_number_of_arguments_for_method_fn_call.zig b/test/compile_errors/stage1/obj/wrong_number_of_arguments_for_method_fn_call.zig
index 25449feb22..7371223863 100644
--- a/test/compile_errors/stage1/obj/wrong_number_of_arguments_for_method_fn_call.zig
+++ b/test/compile_errors/stage1/obj/wrong_number_of_arguments_for_method_fn_call.zig
@@ -7,6 +7,8 @@ fn f(foo: *const Foo) void {
 }
 export fn entry() usize { return @sizeOf(@TypeOf(f)); }
 
-// wrong number of arguments for method fn call
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:15: error: expected 2 argument(s), found 3
diff --git a/test/compile_errors/stage1/obj/wrong_panic_signature_generic_function.zig b/test/compile_errors/stage1/obj/wrong_panic_signature_generic_function.zig
index faaa24ba60..45de2fc6cb 100644
--- a/test/compile_errors/stage1/obj/wrong_panic_signature_generic_function.zig
+++ b/test/compile_errors/stage1/obj/wrong_panic_signature_generic_function.zig
@@ -4,7 +4,9 @@ pub fn panic(comptime msg: []const u8, error_return_trace: ?*builtin.StackTrace)
 }
 const builtin = @import("std").builtin;
 
-// wrong panic signature, generic function
+// error
+// backend=stage1
+// target=native
 //
 // error: expected type 'fn([]const u8, ?*std.builtin.StackTrace) noreturn', found 'fn([]const u8,anytype) anytype'
 // note: only one of the functions is generic
diff --git a/test/compile_errors/stage1/obj/wrong_panic_signature_runtime_function.zig b/test/compile_errors/stage1/obj/wrong_panic_signature_runtime_function.zig
index 92553c3104..5cf224c4a8 100644
--- a/test/compile_errors/stage1/obj/wrong_panic_signature_runtime_function.zig
+++ b/test/compile_errors/stage1/obj/wrong_panic_signature_runtime_function.zig
@@ -3,6 +3,8 @@ test "" {}
 pub fn panic() void {}
 
 
-// wrong panic signature, runtime function
+// error
+// backend=stage1
+// target=native
 //
 // error: expected type 'fn([]const u8, ?*std.builtin.StackTrace) noreturn', found 'fn() void'
diff --git a/test/compile_errors/stage1/obj/wrong_pointer_coerced_to_pointer_to_opaque_{}.zig b/test/compile_errors/stage1/obj/wrong_pointer_coerced_to_pointer_to_opaque_{}.zig
index ed88e3be28..3f6b0e750b 100644
--- a/test/compile_errors/stage1/obj/wrong_pointer_coerced_to_pointer_to_opaque_{}.zig
+++ b/test/compile_errors/stage1/obj/wrong_pointer_coerced_to_pointer_to_opaque_{}.zig
@@ -5,6 +5,8 @@ export fn foo() void {
     bar(@ptrCast(*anyopaque, &x));
 }
 
-// wrong pointer coerced to pointer to opaque {}
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:5:9: error: expected type '*Derp', found '*anyopaque'
diff --git a/test/compile_errors/stage1/obj/wrong_return_type_for_main.zig b/test/compile_errors/stage1/obj/wrong_return_type_for_main.zig
index bf335874db..218ef0b65d 100644
--- a/test/compile_errors/stage1/obj/wrong_return_type_for_main.zig
+++ b/test/compile_errors/stage1/obj/wrong_return_type_for_main.zig
@@ -1,5 +1,7 @@
 pub fn main() f32 { }
 
-// wrong return type for main
+// error
+// backend=stage1
+// target=native
 //
 // error: expected return type of main to be 'void', '!void', 'noreturn', 'u8', or '!u8'
diff --git a/test/compile_errors/stage1/obj/wrong_size_to_an_array_literal.zig b/test/compile_errors/stage1/obj/wrong_size_to_an_array_literal.zig
index 68cb263212..909d894587 100644
--- a/test/compile_errors/stage1/obj/wrong_size_to_an_array_literal.zig
+++ b/test/compile_errors/stage1/obj/wrong_size_to_an_array_literal.zig
@@ -3,6 +3,8 @@ comptime {
     _ = array;
 }
 
-// wrong size to an array literal
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:31: error: index 2 outside array of size 2
diff --git a/test/compile_errors/stage1/obj/wrong_type_for_argument_tuple_to_asyncCall.zig b/test/compile_errors/stage1/obj/wrong_type_for_argument_tuple_to_asyncCall.zig
index d9e45a69b7..7a9be0a8cc 100644
--- a/test/compile_errors/stage1/obj/wrong_type_for_argument_tuple_to_asyncCall.zig
+++ b/test/compile_errors/stage1/obj/wrong_type_for_argument_tuple_to_asyncCall.zig
@@ -7,6 +7,8 @@ fn foo() i32 {
     return 0;
 }
 
-// wrong type for argument tuple to @asyncCall
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:33: error: expected tuple or struct, found 'void'
diff --git a/test/compile_errors/stage1/obj/wrong_type_for_reify_type.zig b/test/compile_errors/stage1/obj/wrong_type_for_reify_type.zig
index 2d8ea02326..b0c1d92659 100644
--- a/test/compile_errors/stage1/obj/wrong_type_for_reify_type.zig
+++ b/test/compile_errors/stage1/obj/wrong_type_for_reify_type.zig
@@ -2,6 +2,8 @@ export fn entry() void {
     _ = @Type(0);
 }
 
-// wrong type for @Type
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:15: error: expected type 'std.builtin.Type', found 'comptime_int'
diff --git a/test/compile_errors/stage1/obj/wrong_type_for_result_ptr_to_asyncCall.zig b/test/compile_errors/stage1/obj/wrong_type_for_result_ptr_to_asyncCall.zig
index 07c5ae8a0b..b4193d4de1 100644
--- a/test/compile_errors/stage1/obj/wrong_type_for_result_ptr_to_asyncCall.zig
+++ b/test/compile_errors/stage1/obj/wrong_type_for_result_ptr_to_asyncCall.zig
@@ -9,6 +9,8 @@ fn foo() i32 {
     return 1234;
 }
 
-// wrong type for result ptr to @asyncCall
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:6:37: error: expected type '*i32', found 'bool'
diff --git a/test/compile_errors/stage1/obj/wrong_type_passed_to_panic.zig b/test/compile_errors/stage1/obj/wrong_type_passed_to_panic.zig
index b16d563571..ed237f81df 100644
--- a/test/compile_errors/stage1/obj/wrong_type_passed_to_panic.zig
+++ b/test/compile_errors/stage1/obj/wrong_type_passed_to_panic.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     @panic(e);
 }
 
-// wrong type passed to @panic
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:12: error: expected type '[]const u8', found 'error{Foo}'
diff --git a/test/compile_errors/stage1/obj/wrong_type_to_hasField.zig b/test/compile_errors/stage1/obj/wrong_type_to_hasField.zig
index a79fec2a21..680c19a6fb 100644
--- a/test/compile_errors/stage1/obj/wrong_type_to_hasField.zig
+++ b/test/compile_errors/stage1/obj/wrong_type_to_hasField.zig
@@ -2,6 +2,8 @@ export fn entry() bool {
     return @hasField(i32, "hi");
 }
 
-// wrong type to @hasField
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:2:22: error: type 'i32' does not support @hasField
diff --git a/test/compile_errors/stage1/obj/wrong_types_given_to_atomic_order_args_in_cmpxchg.zig b/test/compile_errors/stage1/obj/wrong_types_given_to_atomic_order_args_in_cmpxchg.zig
index 47cdaa372f..b0f484e2fd 100644
--- a/test/compile_errors/stage1/obj/wrong_types_given_to_atomic_order_args_in_cmpxchg.zig
+++ b/test/compile_errors/stage1/obj/wrong_types_given_to_atomic_order_args_in_cmpxchg.zig
@@ -3,6 +3,8 @@ export fn entry() void {
     while (!@cmpxchgWeak(i32, &x, 1234, 5678, @as(u32, 1234), @as(u32, 1234))) {}
 }
 
-// wrong types given to atomic order args in cmpxchg
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:47: error: expected type 'std.builtin.AtomicOrder', found 'u32'
diff --git a/test/compile_errors/stage1/obj/wrong_types_given_to_export.zig b/test/compile_errors/stage1/obj/wrong_types_given_to_export.zig
index cdd7ab4631..c06116204f 100644
--- a/test/compile_errors/stage1/obj/wrong_types_given_to_export.zig
+++ b/test/compile_errors/stage1/obj/wrong_types_given_to_export.zig
@@ -3,6 +3,8 @@ comptime {
     @export(entry, .{.name = "entry", .linkage = @as(u32, 1234) });
 }
 
-// wrong types given to @export
+// error
+// backend=stage1
+// target=native
 //
 // tmp.zig:3:59: error: expected type 'std.builtin.GlobalLinkage', found 'comptime_int'
diff --git a/test/compile_errors/stage1/test/access_invalid_typeInfo_decl.zig b/test/compile_errors/stage1/test/access_invalid_typeInfo_decl.zig
index 2fc5730af0..40e31a0855 100644
--- a/test/compile_errors/stage1/test/access_invalid_typeInfo_decl.zig
+++ b/test/compile_errors/stage1/test/access_invalid_typeInfo_decl.zig
@@ -3,6 +3,9 @@ test "Crash" {
     _ = @typeInfo(@This()).Struct.decls[0];
 }
 
-// access invalid @typeInfo decl
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:1:11: error: use of undeclared identifier 'B'
diff --git a/test/compile_errors/stage1/test/alignCast_of_zero_sized_types.zig b/test/compile_errors/stage1/test/alignCast_of_zero_sized_types.zig
index 4c05571202..f83d22759c 100644
--- a/test/compile_errors/stage1/test/alignCast_of_zero_sized_types.zig
+++ b/test/compile_errors/stage1/test/alignCast_of_zero_sized_types.zig
@@ -17,7 +17,10 @@ export fn qux() void {
     _ = @alignCast(2, a);
 }
 
-// @alignCast of zero sized types
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:23: error: cannot adjust alignment of zero sized type '*void'
 // tmp.zig:7:23: error: cannot adjust alignment of zero sized type '?*void'
diff --git a/test/compile_errors/stage1/test/bad_splat_type.zig b/test/compile_errors/stage1/test/bad_splat_type.zig
index 9a16bbc73d..94e3d052a6 100644
--- a/test/compile_errors/stage1/test/bad_splat_type.zig
+++ b/test/compile_errors/stage1/test/bad_splat_type.zig
@@ -4,6 +4,9 @@ export fn entry() void {
     _ = v;
 }
 
-// bad @splat type
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:23: error: vector element type must be integer, float, bool, or pointer; 'comptime_int' is invalid
diff --git a/test/compile_errors/stage1/test/binary_OR_operator_on_error_sets.zig b/test/compile_errors/stage1/test/binary_OR_operator_on_error_sets.zig
index d9894a32a0..eb2d21c6ed 100644
--- a/test/compile_errors/stage1/test/binary_OR_operator_on_error_sets.zig
+++ b/test/compile_errors/stage1/test/binary_OR_operator_on_error_sets.zig
@@ -5,6 +5,9 @@ export fn entry() void {
     _ = x;
 }
 
-// binary OR operator on error sets
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:2:18: error: invalid operands to binary expression: 'error{A}' and 'error{B}'
diff --git a/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-always_inline.zig b/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-always_inline.zig
index ea822f8d91..a010414a57 100644
--- a/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-always_inline.zig
+++ b/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-always_inline.zig
@@ -3,6 +3,9 @@ pub export fn entry() void {
     @call(.{ .modifier = .always_inline }, call_me, .{});
 }
 
-// @call rejects non comptime-known fn - always_inline
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:5: error: the specified modifier requires a comptime-known function
diff --git a/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-compile_time.zig b/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-compile_time.zig
index 3c50830787..b3ffcc6ec2 100644
--- a/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-compile_time.zig
+++ b/test/compile_errors/stage1/test/call_rejects_non_comptime-known_fn-compile_time.zig
@@ -3,6 +3,9 @@ pub export fn entry() void {
     @call(.{ .modifier = .compile_time }, call_me, .{});
 }
 
-// @call rejects non comptime-known fn - compile_time
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:5: error: the specified modifier requires a comptime-known function
diff --git a/test/compile_errors/stage1/test/cast_between_optional_T_where_T_is_not_a_pointer.zig b/test/compile_errors/stage1/test/cast_between_optional_T_where_T_is_not_a_pointer.zig
index 8f5ca1c25d..b8392ff5db 100644
--- a/test/compile_errors/stage1/test/cast_between_optional_T_where_T_is_not_a_pointer.zig
+++ b/test/compile_errors/stage1/test/cast_between_optional_T_where_T_is_not_a_pointer.zig
@@ -6,7 +6,10 @@ export fn entry() void {
     a = b;
 }
 
-// cast between ?T where T is not a pointer
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:6:9: error: expected type '?fn(i8) void', found '?fn(u64) void'
 // tmp.zig:6:9: note: optional type child 'fn(u64) void' cannot cast into optional type child 'fn(i8) void'
diff --git a/test/compile_errors/stage1/test/combination_of_nosuspend_and_async.zig b/test/compile_errors/stage1/test/combination_of_nosuspend_and_async.zig
index a164fb621b..43731c9648 100644
--- a/test/compile_errors/stage1/test/combination_of_nosuspend_and_async.zig
+++ b/test/compile_errors/stage1/test/combination_of_nosuspend_and_async.zig
@@ -7,7 +7,10 @@ export fn entry() void {
 }
 fn foo() void {}
 
-// combination of nosuspend and async
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:4:9: error: suspend inside nosuspend block
 // tmp.zig:2:5: note: nosuspend block here
diff --git a/test/compile_errors/stage1/test/comparison_of_non-tagged_union_and_enum_literal.zig b/test/compile_errors/stage1/test/comparison_of_non-tagged_union_and_enum_literal.zig
index b3c1506705..4898ac744c 100644
--- a/test/compile_errors/stage1/test/comparison_of_non-tagged_union_and_enum_literal.zig
+++ b/test/compile_errors/stage1/test/comparison_of_non-tagged_union_and_enum_literal.zig
@@ -5,7 +5,10 @@ export fn entry() void {
     _ = ok;
 }
 
-// comparison of non-tagged union and enum literal
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:4:16: error: comparison of union and enum literal is only valid for tagged union types
 // tmp.zig:2:15: note: type U is not a tagged union
diff --git a/test/compile_errors/stage1/test/comptime_vector_overflow_shows_the_index.zig b/test/compile_errors/stage1/test/comptime_vector_overflow_shows_the_index.zig
index a638c05b3b..a1f026ab70 100644
--- a/test/compile_errors/stage1/test/comptime_vector_overflow_shows_the_index.zig
+++ b/test/compile_errors/stage1/test/comptime_vector_overflow_shows_the_index.zig
@@ -5,7 +5,10 @@ comptime {
     _ = x;
 }
 
-// comptime vector overflow shows the index
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:4:15: error: operation caused overflow
 // tmp.zig:4:15: note: when computing vector element at index 2
diff --git a/test/compile_errors/stage1/test/duplicate_field_in_anonymous_struct_literal.zig b/test/compile_errors/stage1/test/duplicate_field_in_anonymous_struct_literal.zig
index 1b671d2ad3..7b6821d669 100644
--- a/test/compile_errors/stage1/test/duplicate_field_in_anonymous_struct_literal.zig
+++ b/test/compile_errors/stage1/test/duplicate_field_in_anonymous_struct_literal.zig
@@ -10,7 +10,10 @@ export fn entry() void {
     _ = anon;
 }
 
-// duplicate field in anonymous struct literal
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:7:13: error: duplicate field
 // tmp.zig:4:13: note: other field here
diff --git a/test/compile_errors/stage1/test/error_in_struct_initializer_doesnt_crash_the_compiler.zig b/test/compile_errors/stage1/test/error_in_struct_initializer_doesnt_crash_the_compiler.zig
index e37b887121..2858fd6a01 100644
--- a/test/compile_errors/stage1/test/error_in_struct_initializer_doesnt_crash_the_compiler.zig
+++ b/test/compile_errors/stage1/test/error_in_struct_initializer_doesnt_crash_the_compiler.zig
@@ -7,6 +7,9 @@ pub export fn entry() void {
     _ = a;
 }
 
-// error in struct initializer doesn't crash the compiler
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:4:9: error: duplicate struct field: 'e'
diff --git a/test/compile_errors/stage1/test/errors_in_for_loop_bodies_are_propagated.zig b/test/compile_errors/stage1/test/errors_in_for_loop_bodies_are_propagated.zig
index 32e99cf410..d8be29e39b 100644
--- a/test/compile_errors/stage1/test/errors_in_for_loop_bodies_are_propagated.zig
+++ b/test/compile_errors/stage1/test/errors_in_for_loop_bodies_are_propagated.zig
@@ -3,6 +3,9 @@ pub export fn entry() void {
     for (arr) |bits| _ = @popCount(bits);
 }
 
-// errors in for loop bodies are propagated
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:26: error: expected 2 arguments, found 1
diff --git a/test/compile_errors/stage1/test/export_with_empty_name_string.zig b/test/compile_errors/stage1/test/export_with_empty_name_string.zig
index 424ee6e4b5..b882d11723 100644
--- a/test/compile_errors/stage1/test/export_with_empty_name_string.zig
+++ b/test/compile_errors/stage1/test/export_with_empty_name_string.zig
@@ -3,6 +3,9 @@ comptime {
     @export(entry, .{ .name = "" });
 }
 
-// @export with empty name string
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:5: error: exported symbol name cannot be empty
diff --git a/test/compile_errors/stage1/test/helpful_return_type_error_message.zig b/test/compile_errors/stage1/test/helpful_return_type_error_message.zig
index 6f1f9639da..0e97c09de2 100644
--- a/test/compile_errors/stage1/test/helpful_return_type_error_message.zig
+++ b/test/compile_errors/stage1/test/helpful_return_type_error_message.zig
@@ -15,7 +15,10 @@ export fn quux() u32 {
     buf = bar();
 }
 
-// helpful return type error message
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:2:17: error: expected type 'u32', found 'error{Ohno}'
 // tmp.zig:1:17: note: function cannot return an error
diff --git a/test/compile_errors/stage1/test/int-float_conversion_to_comptime_int-float.zig b/test/compile_errors/stage1/test/int-float_conversion_to_comptime_int-float.zig
index eeb2e4798e..de439168ae 100644
--- a/test/compile_errors/stage1/test/int-float_conversion_to_comptime_int-float.zig
+++ b/test/compile_errors/stage1/test/int-float_conversion_to_comptime_int-float.zig
@@ -7,7 +7,10 @@ export fn bar() void {
     _ = @intToFloat(comptime_float, a);
 }
 
-// int/float conversion to comptime_int/float
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:35: error: unable to evaluate constant expression
 // tmp.zig:7:37: error: unable to evaluate constant expression
diff --git a/test/compile_errors/stage1/test/invalid_assignments.zig b/test/compile_errors/stage1/test/invalid_assignments.zig
index 203784c554..75f45a8bcb 100644
--- a/test/compile_errors/stage1/test/invalid_assignments.zig
+++ b/test/compile_errors/stage1/test/invalid_assignments.zig
@@ -10,7 +10,10 @@ export fn entry4() void {
     2 + 2 = 3;
 }
 
-// invalid assignments
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:6: error: invalid left-hand side to assignment
 // tmp.zig:7:7: error: invalid left-hand side to assignment
diff --git a/test/compile_errors/stage1/test/invalid_float_casts.zig b/test/compile_errors/stage1/test/invalid_float_casts.zig
index 0e2509dcaf..2fe8003728 100644
--- a/test/compile_errors/stage1/test/invalid_float_casts.zig
+++ b/test/compile_errors/stage1/test/invalid_float_casts.zig
@@ -15,7 +15,10 @@ export fn qux() void {
     _ = @floatCast(f32, a);
 }
 
-// invalid float casts
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:36: error: unable to evaluate constant expression
 // tmp.zig:7:21: error: expected integer type, found 'f32'
diff --git a/test/compile_errors/stage1/test/invalid_int_casts.zig b/test/compile_errors/stage1/test/invalid_int_casts.zig
index 6870ecc723..9945751ef5 100644
--- a/test/compile_errors/stage1/test/invalid_int_casts.zig
+++ b/test/compile_errors/stage1/test/invalid_int_casts.zig
@@ -15,7 +15,10 @@ export fn qux() void {
     _ = @intCast(u32, a);
 }
 
-// invalid int casts
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:32: error: unable to evaluate constant expression
 // tmp.zig:7:21: error: expected float type, found 'u32'
diff --git a/test/compile_errors/stage1/test/invalid_non-exhaustive_enum_to_union.zig b/test/compile_errors/stage1/test/invalid_non-exhaustive_enum_to_union.zig
index f78a9e62ff..804e83a66a 100644
--- a/test/compile_errors/stage1/test/invalid_non-exhaustive_enum_to_union.zig
+++ b/test/compile_errors/stage1/test/invalid_non-exhaustive_enum_to_union.zig
@@ -18,7 +18,10 @@ export fn bar() void {
     _ = u;
 }
 
-// invalid non-exhaustive enum to union
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:12:16: error: runtime cast to union 'U' from non-exhaustive enum
 // tmp.zig:17:16: error: no tag by value 15
diff --git a/test/compile_errors/stage1/test/invalid_pointer_with_reify_type.zig b/test/compile_errors/stage1/test/invalid_pointer_with_reify_type.zig
index febf9685fd..bf1cf6bd6f 100644
--- a/test/compile_errors/stage1/test/invalid_pointer_with_reify_type.zig
+++ b/test/compile_errors/stage1/test/invalid_pointer_with_reify_type.zig
@@ -11,6 +11,9 @@ export fn entry() void {
     }});
 }
 
-// invalid pointer with @Type
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:2:16: error: sentinels are only allowed on slices and unknown-length pointers
diff --git a/test/compile_errors/stage1/test/nested_vectors.zig b/test/compile_errors/stage1/test/nested_vectors.zig
index a05e9b0c5b..9e87ac814b 100644
--- a/test/compile_errors/stage1/test/nested_vectors.zig
+++ b/test/compile_errors/stage1/test/nested_vectors.zig
@@ -5,6 +5,9 @@ export fn entry() void {
     _ = v;
 }
 
-// nested vectors
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:23: error: vector element type must be integer, float, bool, or pointer; '@Vector(4, u8)' is invalid
diff --git a/test/compile_errors/stage1/test/non-exhaustive_enum_marker_assigned_a_value.zig b/test/compile_errors/stage1/test/non-exhaustive_enum_marker_assigned_a_value.zig
index 53037ff181..609af248df 100644
--- a/test/compile_errors/stage1/test/non-exhaustive_enum_marker_assigned_a_value.zig
+++ b/test/compile_errors/stage1/test/non-exhaustive_enum_marker_assigned_a_value.zig
@@ -10,7 +10,10 @@ const B = enum {
 };
 comptime { _ = A; _ = B; }
 
-// non-exhaustive enum marker assigned a value
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:4:9: error: '_' is used to mark an enum as non-exhaustive and cannot be assigned a value
 // tmp.zig:6:11: error: non-exhaustive enum missing integer tag type
diff --git a/test/compile_errors/stage1/test/non-exhaustive_enums.zig b/test/compile_errors/stage1/test/non-exhaustive_enums.zig
index 49ceff3178..3b5f8af7cb 100644
--- a/test/compile_errors/stage1/test/non-exhaustive_enums.zig
+++ b/test/compile_errors/stage1/test/non-exhaustive_enums.zig
@@ -13,7 +13,10 @@ pub export fn entry() void {
     _ = C;
 }
 
-// non-exhaustive enums
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:5: error: '_' field of non-exhaustive enum must be last
 // tmp.zig:6:11: error: non-exhaustive enum specifies every value
diff --git a/test/compile_errors/stage1/test/not_an_enum_type.zig b/test/compile_errors/stage1/test/not_an_enum_type.zig
index f92c3d44e1..99c733b4d0 100644
--- a/test/compile_errors/stage1/test/not_an_enum_type.zig
+++ b/test/compile_errors/stage1/test/not_an_enum_type.zig
@@ -12,6 +12,9 @@ const Error = union(enum) {
 const InvalidToken = struct {};
 const ExpectedVarDeclOrFn = struct {};
 
-// not an enum type
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:4:9: error: expected type '@typeInfo(Error).Union.tag_type.?', found 'type'
diff --git a/test/compile_errors/stage1/test/packed_struct_with_fields_of_not_allowed_types.zig b/test/compile_errors/stage1/test/packed_struct_with_fields_of_not_allowed_types.zig
index dc156342f4..2951d26c52 100644
--- a/test/compile_errors/stage1/test/packed_struct_with_fields_of_not_allowed_types.zig
+++ b/test/compile_errors/stage1/test/packed_struct_with_fields_of_not_allowed_types.zig
@@ -59,7 +59,10 @@ const Enum = enum {
     B,
 };
 
-// packed struct with fields of not allowed types
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:2:5: error: type 'anyerror' not allowed in packed struct; no guaranteed in-memory representation
 // tmp.zig:5:5: error: array of 'u24' not allowed in packed struct due to padding bits (must be padded from 48 to 64 bits)
diff --git a/test/compile_errors/stage1/test/ptrToInt_with_pointer_to_zero-sized_type.zig b/test/compile_errors/stage1/test/ptrToInt_with_pointer_to_zero-sized_type.zig
index 63ba217247..7c2ba184c4 100644
--- a/test/compile_errors/stage1/test/ptrToInt_with_pointer_to_zero-sized_type.zig
+++ b/test/compile_errors/stage1/test/ptrToInt_with_pointer_to_zero-sized_type.zig
@@ -4,6 +4,9 @@ export fn entry() void {
     _ = x;
 }
 
-// @ptrToInt with pointer to zero-sized type
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:23: error: pointer to size 0 type has no address
diff --git a/test/compile_errors/stage1/test/reassign_to_array_parameter.zig b/test/compile_errors/stage1/test/reassign_to_array_parameter.zig
index a222150a2c..f3b51d2c0f 100644
--- a/test/compile_errors/stage1/test/reassign_to_array_parameter.zig
+++ b/test/compile_errors/stage1/test/reassign_to_array_parameter.zig
@@ -5,6 +5,9 @@ export fn entry() void {
     reassign(.{1, 2, 3});
 }
 
-// reassign to array parameter
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:2:15: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/test/reassign_to_slice_parameter.zig b/test/compile_errors/stage1/test/reassign_to_slice_parameter.zig
index a8e555182a..34bd5541a1 100644
--- a/test/compile_errors/stage1/test/reassign_to_slice_parameter.zig
+++ b/test/compile_errors/stage1/test/reassign_to_slice_parameter.zig
@@ -5,6 +5,9 @@ export fn entry() void {
     reassign("foo");
 }
 
-// reassign to slice parameter
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:2:10: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/test/reassign_to_struct_parameter.zig b/test/compile_errors/stage1/test/reassign_to_struct_parameter.zig
index 018548ab32..994833d989 100644
--- a/test/compile_errors/stage1/test/reassign_to_struct_parameter.zig
+++ b/test/compile_errors/stage1/test/reassign_to_struct_parameter.zig
@@ -8,6 +8,9 @@ export fn entry() void {
     reassign(S{.x = 3});
 }
 
-// reassign to struct parameter
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:5:10: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/test/reference_to_const_data.zig b/test/compile_errors/stage1/test/reference_to_const_data.zig
index d785eb648e..6c98aefd7a 100644
--- a/test/compile_errors/stage1/test/reference_to_const_data.zig
+++ b/test/compile_errors/stage1/test/reference_to_const_data.zig
@@ -19,7 +19,10 @@ export fn qux() void {
     ptr.x = 2;
 }
 
-// reference to const data
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:14: error: cannot assign to constant
 // tmp.zig:7:13: error: cannot assign to constant
diff --git a/test/compile_errors/stage1/test/reify_typeOf_with_incompatible_arguments.zig b/test/compile_errors/stage1/test/reify_typeOf_with_incompatible_arguments.zig
index 97ee7aaf1b..2013a07e53 100644
--- a/test/compile_errors/stage1/test/reify_typeOf_with_incompatible_arguments.zig
+++ b/test/compile_errors/stage1/test/reify_typeOf_with_incompatible_arguments.zig
@@ -4,6 +4,9 @@ export fn entry() void {
     _ = @TypeOf(var_1, var_2);
 }
 
-// @TypeOf with incompatible arguments
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:4:9: error: incompatible types: 'f32' and 'u32'
diff --git a/test/compile_errors/stage1/test/reify_typeOf_with_no_arguments.zig b/test/compile_errors/stage1/test/reify_typeOf_with_no_arguments.zig
index e18b9e66b7..0626d45393 100644
--- a/test/compile_errors/stage1/test/reify_typeOf_with_no_arguments.zig
+++ b/test/compile_errors/stage1/test/reify_typeOf_with_no_arguments.zig
@@ -2,6 +2,9 @@ export fn entry() void {
     _ = @TypeOf();
 }
 
-// @TypeOf with no arguments
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:2:9: error: expected at least 1 argument, found 0
diff --git a/test/compile_errors/stage1/test/reject_extern_function_definitions_with_body.zig b/test/compile_errors/stage1/test/reject_extern_function_definitions_with_body.zig
index 024080a6bc..a7b92e8399 100644
--- a/test/compile_errors/stage1/test/reject_extern_function_definitions_with_body.zig
+++ b/test/compile_errors/stage1/test/reject_extern_function_definitions_with_body.zig
@@ -2,6 +2,9 @@ extern "c" fn definitelyNotInLibC(a: i32, b: i32) i32 {
     return a + b;
 }
 
-// reject extern function definitions with body
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:1:1: error: extern functions have no body
diff --git a/test/compile_errors/stage1/test/reject_extern_variables_with_initializers.zig b/test/compile_errors/stage1/test/reject_extern_variables_with_initializers.zig
index d3f65ff0cb..54239e0948 100644
--- a/test/compile_errors/stage1/test/reject_extern_variables_with_initializers.zig
+++ b/test/compile_errors/stage1/test/reject_extern_variables_with_initializers.zig
@@ -1,5 +1,8 @@
 extern var foo: int = 2;
 
-// reject extern variables with initializers
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:1:23: error: extern variables have no initializers
diff --git a/test/compile_errors/stage1/test/repeated_invalid_field_access_to_generic_function_returning_type_crashes_compiler_2655.zig b/test/compile_errors/stage1/test/repeated_invalid_field_access_to_generic_function_returning_type_crashes_compiler_2655.zig
index c419a6ae83..7499939b4a 100644
--- a/test/compile_errors/stage1/test/repeated_invalid_field_access_to_generic_function_returning_type_crashes_compiler_2655.zig
+++ b/test/compile_errors/stage1/test/repeated_invalid_field_access_to_generic_function_returning_type_crashes_compiler_2655.zig
@@ -6,6 +6,9 @@ test "1" {
     _ = A().a;
 }
 
-// repeated invalid field access to generic function returning type crashes compiler. #2655
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:2:12: error: use of undeclared identifier 'Q'
diff --git a/test/compile_errors/stage1/test/return_invalid_type_from_test.zig b/test/compile_errors/stage1/test/return_invalid_type_from_test.zig
index e7aeab3be7..590ac30918 100644
--- a/test/compile_errors/stage1/test/return_invalid_type_from_test.zig
+++ b/test/compile_errors/stage1/test/return_invalid_type_from_test.zig
@@ -1,5 +1,8 @@
 test "example" { return 1; }
 
-// return invalid type from test
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:1:25: error: expected type 'void', found 'comptime_int'
diff --git a/test/compile_errors/stage1/test/shift_on_type_with_non-power-of-two_size.zig b/test/compile_errors/stage1/test/shift_on_type_with_non-power-of-two_size.zig
index d76406223d..222cb22563 100644
--- a/test/compile_errors/stage1/test/shift_on_type_with_non-power-of-two_size.zig
+++ b/test/compile_errors/stage1/test/shift_on_type_with_non-power-of-two_size.zig
@@ -23,7 +23,10 @@ export fn entry() void {
     S.d();
 }
 
-// shift on type with non-power-of-two size
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:5:19: error: RHS of shift is too large for LHS type
 // tmp.zig:9:19: error: RHS of shift is too large for LHS type
diff --git a/test/compile_errors/stage1/test/shuffle_with_selected_index_past_first_vector_length.zig b/test/compile_errors/stage1/test/shuffle_with_selected_index_past_first_vector_length.zig
index c45eb4a0e2..8b0c5ba780 100644
--- a/test/compile_errors/stage1/test/shuffle_with_selected_index_past_first_vector_length.zig
+++ b/test/compile_errors/stage1/test/shuffle_with_selected_index_past_first_vector_length.zig
@@ -5,7 +5,10 @@ export fn entry() void {
     _ = z;
 }
 
-// @shuffle with selected index past first vector length
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:4:39: error: mask index '4' has out-of-bounds selection
 // tmp.zig:4:27: note: selected index '7' out of bounds of @Vector(4, u32)
diff --git a/test/compile_errors/stage1/test/switch_ranges_endpoints_are_validated.zig b/test/compile_errors/stage1/test/switch_ranges_endpoints_are_validated.zig
index 4c0545ea92..a44d59feed 100644
--- a/test/compile_errors/stage1/test/switch_ranges_endpoints_are_validated.zig
+++ b/test/compile_errors/stage1/test/switch_ranges_endpoints_are_validated.zig
@@ -7,7 +7,10 @@ pub export fn entry() void {
     }
 }
 
-// switch ranges endpoints are validated
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:4:9: error: range start value is greater than the end value
 // tmp.zig:5:9: error: range start value is greater than the end value
diff --git a/test/compile_errors/stage1/test/switching_with_exhaustive_enum_has___prong_.zig b/test/compile_errors/stage1/test/switching_with_exhaustive_enum_has___prong_.zig
index b132b7834e..0ca489bdb8 100644
--- a/test/compile_errors/stage1/test/switching_with_exhaustive_enum_has___prong_.zig
+++ b/test/compile_errors/stage1/test/switching_with_exhaustive_enum_has___prong_.zig
@@ -11,6 +11,9 @@ pub export fn entry() void {
     }
 }
 
-// switching with exhaustive enum has '_' prong 
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:7:5: error: switch on exhaustive enum has `_` prong
diff --git a/test/compile_errors/stage1/test/switching_with_non-exhaustive_enums.zig b/test/compile_errors/stage1/test/switching_with_non-exhaustive_enums.zig
index 53cd88e68c..ed46c5f2f1 100644
--- a/test/compile_errors/stage1/test/switching_with_non-exhaustive_enums.zig
+++ b/test/compile_errors/stage1/test/switching_with_non-exhaustive_enums.zig
@@ -25,7 +25,10 @@ pub export fn entry() void {
     }
 }
 
-// switching with non-exhaustive enums
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:12:5: error: enumeration value 'E.b' not handled in switch
 // tmp.zig:16:5: error: switch on non-exhaustive enum must include `else` or `_` prong
diff --git a/test/compile_errors/stage1/test/tagName_on_invalid_value_of_non-exhaustive_enum.zig b/test/compile_errors/stage1/test/tagName_on_invalid_value_of_non-exhaustive_enum.zig
index 139c7c7a23..a98470b681 100644
--- a/test/compile_errors/stage1/test/tagName_on_invalid_value_of_non-exhaustive_enum.zig
+++ b/test/compile_errors/stage1/test/tagName_on_invalid_value_of_non-exhaustive_enum.zig
@@ -3,6 +3,9 @@ test "enum" {
     _ = @tagName(@intToEnum(E, 5));
 }
 
-// @tagName on invalid value of non-exhaustive enum
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:18: error: no tag by value 5
diff --git a/test/compile_errors/stage1/test/type_mismatch_in_C_prototype_with_varargs.zig b/test/compile_errors/stage1/test/type_mismatch_in_C_prototype_with_varargs.zig
index 437cca8772..1f78ef3999 100644
--- a/test/compile_errors/stage1/test/type_mismatch_in_C_prototype_with_varargs.zig
+++ b/test/compile_errors/stage1/test/type_mismatch_in_C_prototype_with_varargs.zig
@@ -6,6 +6,9 @@ export fn main() void {
     _ = x;
 }
 
-// type mismatch in C prototype with varargs
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:5:22: error: expected type 'fn([*c]u8, ...) callconv(.C) void', found 'fn([*:0]u8, ...) callconv(.C) void'
diff --git a/test/compile_errors/stage1/test/type_mismatch_with_tuple_concatenation.zig b/test/compile_errors/stage1/test/type_mismatch_with_tuple_concatenation.zig
index ce5e4d4629..5983224676 100644
--- a/test/compile_errors/stage1/test/type_mismatch_with_tuple_concatenation.zig
+++ b/test/compile_errors/stage1/test/type_mismatch_with_tuple_concatenation.zig
@@ -3,6 +3,9 @@ export fn entry() void {
     x = x ++ .{ 1, 2, 3 };
 }
 
-// type mismatch with tuple concatenation
+// error
+// backend=stage1
+// target=native
+// is_test=1
 //
 // tmp.zig:3:11: error: expected type 'struct:2:14', found 'struct:3:11'
diff --git a/test/compile_errors/stage2/constant_inside_comptime_function_has_compile_error.zig b/test/compile_errors/stage2/constant_inside_comptime_function_has_compile_error.zig
index 98d6104670..2b67390b05 100644
--- a/test/compile_errors/stage2/constant_inside_comptime_function_has_compile_error.zig
+++ b/test/compile_errors/stage2/constant_inside_comptime_function_has_compile_error.zig
@@ -15,6 +15,7 @@ export fn entry() void {
 }
 
 // error
+// target=native
 //
 // :4:5: error: unreachable code
 // :4:25: note: control flow is diverted here
diff --git a/test/compile_errors/stage2/duplicate-unused_labels.zig b/test/compile_errors/stage2/duplicate-unused_labels.zig
index 44ab48480d..4bfc6c5960 100644
--- a/test/compile_errors/stage2/duplicate-unused_labels.zig
+++ b/test/compile_errors/stage2/duplicate-unused_labels.zig
@@ -18,6 +18,7 @@ comptime {
 }
 
 // error
+// target=native
 //
 // :2:12: error: redefinition of label 'blk'
 // :2:5: note: previous definition here
diff --git a/test/compile_errors/stage2/embed_outside_package.zig b/test/compile_errors/stage2/embed_outside_package.zig
index 9cf1a8b905..2003adb061 100644
--- a/test/compile_errors/stage2/embed_outside_package.zig
+++ b/test/compile_errors/stage2/embed_outside_package.zig
@@ -3,5 +3,6 @@ export fn a() usize {
 }
 
 // error
+// target=native
 //
 //:2:23: error: embed of file outside package path: '/root/foo'
diff --git a/test/compile_errors/stage2/import_outside_package.zig b/test/compile_errors/stage2/import_outside_package.zig
index 6b70778754..59a75e2745 100644
--- a/test/compile_errors/stage2/import_outside_package.zig
+++ b/test/compile_errors/stage2/import_outside_package.zig
@@ -3,5 +3,6 @@ export fn a() usize {
 }
 
 // error
+// target=native
 //
 // :2:20: error: import of file outside package path: '../../above.zig'
diff --git a/test/compile_errors/stage2/out_of_bounds_index.zig b/test/compile_errors/stage2/out_of_bounds_index.zig
index 614c445d46..ea9bc6521d 100644
--- a/test/compile_errors/stage2/out_of_bounds_index.zig
+++ b/test/compile_errors/stage2/out_of_bounds_index.zig
@@ -21,6 +21,7 @@ comptime {
 }
 
 // error
+// target=native
 //
 // :4:26: error: end index 6 out of bounds for slice of length 4 +1 (sentinel)
 // :9:22: error: end index 6 out of bounds for array of length 4 +1 (sentinel)
diff --git a/test/compile_errors/stage2/slice_of_null_pointer.zig b/test/compile_errors/stage2/slice_of_null_pointer.zig
index a33a904842..7f2c74a8a6 100644
--- a/test/compile_errors/stage2/slice_of_null_pointer.zig
+++ b/test/compile_errors/stage2/slice_of_null_pointer.zig
@@ -6,5 +6,6 @@ comptime {
 }
 
 // error
+// target=native
 //
 // :4:14: error: slice of null pointer
diff --git a/test/compile_errors/stage2/struct_duplicate_field_name.zig b/test/compile_errors/stage2/struct_duplicate_field_name.zig
index e7bed78d06..7e4434f1d9 100644
--- a/test/compile_errors/stage2/struct_duplicate_field_name.zig
+++ b/test/compile_errors/stage2/struct_duplicate_field_name.zig
@@ -9,6 +9,7 @@ export fn entry() void {
 }
 
 // error
+// target=native
 //
 // :3:5: error: duplicate struct field: 'foo'
 // :2:5: note: other field here
diff --git a/test/compile_errors/stage2/union_access_of_inactive_field.zig b/test/compile_errors/stage2/union_access_of_inactive_field.zig
index 881279e1c3..4f72914216 100644
--- a/test/compile_errors/stage2/union_access_of_inactive_field.zig
+++ b/test/compile_errors/stage2/union_access_of_inactive_field.zig
@@ -9,6 +9,7 @@ comptime {
 }
 
 // error
+// target=native
 //
 // :7:16: error: access of union field 'b' while field 'a' is active
 // :1:11: note: union declared here
diff --git a/test/compile_errors/stage2/union_duplicate_enum_field.zig b/test/compile_errors/stage2/union_duplicate_enum_field.zig
index 5a08256edb..44eb58e014 100644
--- a/test/compile_errors/stage2/union_duplicate_enum_field.zig
+++ b/test/compile_errors/stage2/union_duplicate_enum_field.zig
@@ -10,6 +10,7 @@ export fn foo() void {
 }
 
 // error
+// target=native
 //
 // :4:5: error: duplicate union field: 'a'
 // :3:5: note: other field here
diff --git a/test/compile_errors/stage2/union_duplicate_field_definition.zig b/test/compile_errors/stage2/union_duplicate_field_definition.zig
index 7aab7c4695..7993f27141 100644
--- a/test/compile_errors/stage2/union_duplicate_field_definition.zig
+++ b/test/compile_errors/stage2/union_duplicate_field_definition.zig
@@ -9,6 +9,7 @@ export fn entry() void {
 }
 
 // error
+// target=native
 //
 // :3:5: error: duplicate union field: 'foo'
 // :2:5: note: other field here
diff --git a/test/compile_errors/stage2/union_enum_field_missing.zig b/test/compile_errors/stage2/union_enum_field_missing.zig
index 638c9fec26..25ec477894 100644
--- a/test/compile_errors/stage2/union_enum_field_missing.zig
+++ b/test/compile_errors/stage2/union_enum_field_missing.zig
@@ -14,6 +14,7 @@ export fn entry() usize {
 }
 
 // error
+// target=native
 //
 // :7:1: error: enum field(s) missing in union
 // :4:5: note: field 'c' missing, declared here
diff --git a/test/compile_errors/stage2/union_extra_field.zig b/test/compile_errors/stage2/union_extra_field.zig
index cdfa482208..e3bc0deb33 100644
--- a/test/compile_errors/stage2/union_extra_field.zig
+++ b/test/compile_errors/stage2/union_extra_field.zig
@@ -14,6 +14,7 @@ export fn entry() usize {
 }
 
 // error
+// target=native
 //
 // :6:1: error: enum 'tmp.E' has no field named 'd'
 // :1:11: note: enum declared here
diff --git a/test/compile_errors/stage2/union_runtime_coercion_from_enum.zig b/test/compile_errors/stage2/union_runtime_coercion_from_enum.zig
index 56cd2db83b..9020e9d5d7 100644
--- a/test/compile_errors/stage2/union_runtime_coercion_from_enum.zig
+++ b/test/compile_errors/stage2/union_runtime_coercion_from_enum.zig
@@ -15,6 +15,7 @@ export fn doTheTest() u64 {
 }
 
 // error
+// target=native
 //
 // :13:19: error: runtime coercion from enum 'tmp.E' to union 'tmp.U' which has non-void fields
 // :6:5: note: field 'a' has type 'u32'