mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-20 00:08:56 +00:00
Code Issues Packages Projects Releases Wiki Activity

wasm: support rendering unions using their backing type if they have no defined tag type

Browse Source
This commit is contained in:
kcbanner 2023-10-28 12:38:31 -04:00 committed by mlugg
parent 35c86984a6
commit 1acb6a53d0
No known key found for this signature in database
GPG Key ID: E60D96B91E86EF9F
1 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/arch/wasm/CodeGen.zig
View File

@ -3372,10 +3372,14 @@ fn lowerConstant(func: *CodeGen, val: Value, ty: Type) InnerError!WValue {
},
.un => |un| {
// in this case we have a packed union which will not be passed by reference.
const union_obj = mod.typeToUnion(ty).?;
const field_index = mod.unionTagFieldIndex(union_obj, un.tag.toValue()).?;
const field_ty = union_obj.field_types.get(ip)[field_index].toType();
return func.lowerConstant(un.val.toValue(), field_ty);
const constant_ty = if (un.tag == .none)
try ty.unionBackingType(mod)
else field_ty: {
const union_obj = mod.typeToUnion(ty).?;
const field_index = mod.unionTagFieldIndex(union_obj, un.tag.toValue()).?;
break :field_ty union_obj.field_types.get(ip)[field_index].toType();
};
return func.lowerConstant(un.val.toValue(), constant_ty);
},
.memoized_call => unreachable,
}