================
@@ -5877,119 +5882,130 @@ RValue CodeGenFunction::EmitCall(const CGFunctionInfo
&CallInfo,
CallArgs.freeArgumentMemory(*this);
// Extract the return value.
- RValue Ret = [&] {
- switch (RetAI.getKind()) {
- case ABIArgInfo::CoerceAndExpand: {
- auto coercionType = RetAI.getCoerceAndExpandType();
-
- Address addr = SRetPtr.withElementType(coercionType);
-
- assert(CI->getType() == RetAI.getUnpaddedCoerceAndExpandType());
- bool requiresExtract = isa<llvm::StructType>(CI->getType());
+ RValue Ret;
- unsigned unpaddedIndex = 0;
- for (unsigned i = 0, e = coercionType->getNumElements(); i != e; ++i) {
- llvm::Type *eltType = coercionType->getElementType(i);
- if (ABIArgInfo::isPaddingForCoerceAndExpand(eltType)) continue;
- Address eltAddr = Builder.CreateStructGEP(addr, i);
- llvm::Value *elt = CI;
- if (requiresExtract)
- elt = Builder.CreateExtractValue(elt, unpaddedIndex++);
- else
- assert(unpaddedIndex == 0);
- Builder.CreateStore(elt, eltAddr);
+ // If the current function is a virtual function pointer thunk, avoid copying
+ // the return value of the musttail call to a temporary.
+ if (IsVirtualFunctionPointerThunk)
----------------
kovdan01 wrote:
Nit: it's probably worth adding braces since else branch is long (while still
being one statement).
https://github.com/llvm/llvm-project/pull/99576
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