[clang] [CIR] Function calls with aggregate arguments and return values (PR #143377)

[Andy Kaylor via cfe-commits]

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@@ -365,6 +422,19 @@ RValue CIRGenFunction::emitCall(const CIRGenFunctionInfo &funcInfo,
   if (isa<cir::VoidType>(retCIRTy))
     return getUndefRValue(retTy);
   switch (getEvaluationKind(retTy)) {
+  case cir::TEK_Aggregate: {
+    Address destPtr = returnValue.getValue();
+
+    if (!destPtr.isValid())
+      destPtr = createMemTemp(retTy, callLoc, getCounterAggTmpAsString());
+
+    auto results = theCall->getOpResults();
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andykaylor wrote:

Don't use auto here.

https://github.com/llvm/llvm-project/pull/143377