Merge pull request #5827 from jakubtomsu/5826-fix

[LLVM Backend] Prefer the type pointer over LLVMTypeRef when looking up struct_field_remapping (Fix 5826)
This commit is contained in:
Laytan
2025-10-18 17:46:58 +02:00
committed by GitHub

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@@ -981,9 +981,12 @@ gb_internal lbStructFieldRemapping lb_get_struct_remapping(lbModule *m, Type *t)
mutex_lock(&m->types_mutex);
auto *field_remapping = map_get(&m->struct_field_remapping, cast(void *)struct_type);
// NOTE(jakub): It's very important to check the type pointer first,
// because two disctinct but similar structs can end up with the same LLVMTypeRef after interning.
// (For example struct{u16,u8} looks identical to LLVM as struct{u16,u8,u8} once padding fields are inserted.)
auto *field_remapping = map_get(&m->struct_field_remapping, cast(void *)t);
if (field_remapping == nullptr) {
field_remapping = map_get(&m->struct_field_remapping, cast(void *)t);
field_remapping = map_get(&m->struct_field_remapping, cast(void *)struct_type);
}
mutex_unlock(&m->types_mutex);