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

[Eli Friedman via cfe-commits]

================
@@ -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(
----------------
efriedma-quic wrote:

If you're going to switch all the other Ignore handlers to just `return Slot.asRValue();`, might as well also change this one.

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