stage2: implement `anyframe`, `anyframe->T` and fix assembly

 * AstGen: implement `anyframe_literal` and `anyframe_type`.
 * Introduce `makeSubBlock` to avoid redundant AstGen code for GenZir
   scopes. Allows adding/removing a field without possibility of
   accidentally introducing a bug of forgetting to set the new field.
 * Add to GenZir `nosuspend_node` and `suspend_node` in preparation for
   implementing `suspend` blocks and `nosuspend` blocks.
 * AstGen: fix assembly to support clobbers, multiple outputs, and
   outputs without `->` syntax.
   - `asm` and `asm_volatile` move to `Extended` enum with `small` being
     repurposed for a few things. This frees up 2 ZIR tags, 1 of which
     is used in this commit and 1 is leftover.
 * AstGen: fix `simple_types` incorrectly having multiple conflicting
   values for "undefined" and "null".
   - Also add "anyframe" to `simple_types`.
 * Add `anyframe_type` to type.zig, value.zig and `Zir.Inst.Ref`.
   - Also add i128 and u128 types to `Zir.Inst.Ref` and `simple_types`.
 * Sema/Zir: Fix incorrect math causing the function body to be messed
   up for Extended-encoded functions.
 * Zir: support `i32` fields for "extra" payloads.

1 files changed, 15 insertions, 8 deletions

diff --git a/src/value.zig b/src/value.zig
index e1ca79332c..d2d7be3007 100644
--- a/src/value.zig
+++ b/src/value.zig
@@ -55,17 +55,10 @@ pub const Value = extern union {
         comptime_int_type,
         comptime_float_type,
         noreturn_type,
+        anyframe_type,
         null_type,
         undefined_type,
-        fn_noreturn_no_args_type,
-        fn_void_no_args_type,
-        fn_naked_noreturn_no_args_type,
-        fn_ccc_void_no_args_type,
-        single_const_pointer_to_comptime_int_type,
-        const_slice_u8_type,
         enum_literal_type,
-        manyptr_u8_type,
-        manyptr_const_u8_type,
         atomic_ordering_type,
         atomic_rmw_op_type,
         calling_convention_type,
@@ -74,6 +67,14 @@ pub const Value = extern union {
         call_options_type,
         export_options_type,
         extern_options_type,
+        manyptr_u8_type,
+        manyptr_const_u8_type,
+        fn_noreturn_no_args_type,
+        fn_void_no_args_type,
+        fn_naked_noreturn_no_args_type,
+        fn_ccc_void_no_args_type,
+        single_const_pointer_to_comptime_int_type,
+        const_slice_u8_type,
 
         undef,
         zero,
@@ -166,6 +167,7 @@ pub const Value = extern union {
                 .fn_naked_noreturn_no_args_type,
                 .fn_ccc_void_no_args_type,
                 .single_const_pointer_to_comptime_int_type,
+                .anyframe_type,
                 .const_slice_u8_type,
                 .enum_literal_type,
                 .undef,
@@ -334,6 +336,7 @@ pub const Value = extern union {
             .fn_naked_noreturn_no_args_type,
             .fn_ccc_void_no_args_type,
             .single_const_pointer_to_comptime_int_type,
+            .anyframe_type,
             .const_slice_u8_type,
             .enum_literal_type,
             .undef,
@@ -502,6 +505,7 @@ pub const Value = extern union {
             .fn_naked_noreturn_no_args_type => return out_stream.writeAll("fn() callconv(.Naked) noreturn"),
             .fn_ccc_void_no_args_type => return out_stream.writeAll("fn() callconv(.C) void"),
             .single_const_pointer_to_comptime_int_type => return out_stream.writeAll("*const comptime_int"),
+            .anyframe_type => return out_stream.writeAll("anyframe"),
             .const_slice_u8_type => return out_stream.writeAll("[]const u8"),
             .enum_literal_type => return out_stream.writeAll("@Type(.EnumLiteral)"),
             .manyptr_u8_type => return out_stream.writeAll("[*]u8"),
@@ -633,6 +637,7 @@ pub const Value = extern union {
             .fn_naked_noreturn_no_args_type => Type.initTag(.fn_naked_noreturn_no_args),
             .fn_ccc_void_no_args_type => Type.initTag(.fn_ccc_void_no_args),
             .single_const_pointer_to_comptime_int_type => Type.initTag(.single_const_pointer_to_comptime_int),
+            .anyframe_type => Type.initTag(.@"anyframe"),
             .const_slice_u8_type => Type.initTag(.const_slice_u8),
             .enum_literal_type => Type.initTag(.enum_literal),
             .manyptr_u8_type => Type.initTag(.manyptr_u8),
@@ -1070,6 +1075,7 @@ pub const Value = extern union {
             .fn_naked_noreturn_no_args_type,
             .fn_ccc_void_no_args_type,
             .single_const_pointer_to_comptime_int_type,
+            .anyframe_type,
             .const_slice_u8_type,
             .enum_literal_type,
             .ty,
@@ -1338,6 +1344,7 @@ pub const Value = extern union {
             .fn_naked_noreturn_no_args_type,
             .fn_ccc_void_no_args_type,
             .single_const_pointer_to_comptime_int_type,
+            .anyframe_type,
             .const_slice_u8_type,
             .enum_literal_type,
             .manyptr_u8_type,