Mark scalar layout unions so that backends that do not support partially initialized scalars can special case them.

2022-03-03 12:02:12 +00:00
parent 2ed6786404
commit d32ce37a17
37 changed files with 356 additions and 288 deletions
--- a/compiler/rustc_codegen_llvm/src/intrinsic.rs
+++ b/compiler/rustc_codegen_llvm/src/intrinsic.rs
@@ -134,7 +134,7 @@ impl<'ll, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'_, 'll, 'tcx> {
            sym::va_arg => {
                match fn_abi.ret.layout.abi {
                    abi::Abi::Scalar(scalar) => {
-                        match scalar.value {
+                        match scalar.primitive() {
                            Primitive::Int(..) => {
                                if self.cx().size_of(ret_ty).bytes() < 4 {
                                    // `va_arg` should not be called on an integer type