[clang] [clang][CodeGen] Return RValue from `EmitVAArg` (PR #94635)

[John McCall via cfe-commits]

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@@ -325,14 +325,19 @@ Address SparcV9ABIInfo::EmitVAArg(CodeGenFunction &CGF, Address VAListAddr,
     break;
 
   case ABIArgInfo::Ignore:
-    return Address(llvm::UndefValue::get(ArgPtrTy), ArgTy, TypeInfo.Align);
+    return CGF.EmitLoadOfAnyValue(
+        CGF.MakeAddrLValue(
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rjmccall wrote:

Yeah, we should probably separately add some function to synthesize an ignored value.

https://github.com/llvm/llvm-project/pull/94635