Sema: improve compile error for bad function alignment

 * Integrate more declaratively with src/target.zig
 * Only trigger the check when a function body is found, do not trigger
   for function types.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/target.zig b/src/target.zig
index ea8b3efc45..5202fb15fc 100644
--- a/src/target.zig
+++ b/src/target.zig
@@ -744,6 +744,7 @@ pub fn llvmMachineAbi(target: std.Target) ?[:0]const u8 {
     }
 }
 
+/// This function returns 1 if function alignment is not observable or settable.
 pub fn defaultFunctionAlignment(target: std.Target) u32 {
     return switch (target.cpu.arch) {
         .arm, .armeb => 4,
@@ -753,3 +754,10 @@ pub fn defaultFunctionAlignment(target: std.Target) u32 {
         else => 1,
     };
 }
+
+pub fn supportsFunctionAlignment(target: std.Target) bool {
+    return switch (target.cpu.arch) {
+        .wasm32, .wasm64 => false,
+        else => true,
+    };
+}