================
@@ -2838,7 +2850,9 @@ ABIArgInfo X86_64ABIInfo::classifyReturnType(QualType
RetTy) const {
if (RetTy->isIntegralOrEnumerationType() &&
isPromotableIntegerTypeForABI(RetTy))
----------------
nikic wrote:
If you're wondering why this peculiar `isPromotableIntegerTypeForABI()` check
is here even though `shouldExtendReturnType()` will also check it, the reason
is that Clang uses `iN` for `_BitInt(N)` if N <= 32, but always uses `i64` if
`32 < N <= 64`. This seems peculiar and possibly unintended, but I've left it
alone for now.
https://github.com/llvm/llvm-project/pull/232729
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