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-rw-r--r--clang/lib/CodeGen/TargetInfo.cpp7
1 files changed, 6 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp
index fb3b931ce95..d33d6a09e01 100644
--- a/clang/lib/CodeGen/TargetInfo.cpp
+++ b/clang/lib/CodeGen/TargetInfo.cpp
@@ -5548,7 +5548,12 @@ MipsABIInfo::returnAggregateInRegs(QualType RetTy, uint64_t Size) const {
ABIArgInfo MipsABIInfo::classifyReturnType(QualType RetTy) const {
uint64_t Size = getContext().getTypeSize(RetTy);
- if (RetTy->isVoidType() || Size == 0)
+ if (RetTy->isVoidType())
+ return ABIArgInfo::getIgnore();
+
+ // O32 doesn't treat zero-sized structs differently from other structs.
+ // However, N32/N64 ignores zero sized return values.
+ if (!IsO32 && Size == 0)
return ABIArgInfo::getIgnore();
if (isAggregateTypeForABI(RetTy) || RetTy->isVectorType()) {
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