================
@@ -2595,6 +2595,14 @@ GetX86_64ByValArgumentPair(llvm::Type *Lo, llvm::Type
*Hi,
ABIArgInfo X86_64ABIInfo::
classifyReturnType(QualType RetTy) const {
+ // return int128 as i128
+ if (const BuiltinType *BT = RetTy->getAs<BuiltinType>()) {
+ BuiltinType::Kind k = BT->getKind();
+ if (k == BuiltinType::Int128 || k == BuiltinType::UInt128) {
+ return ABIArgInfo::getDirect();
+ }
+ }
+
// AMD64-ABI 3.2.3p4: Rule 1. Classify the return type with the
// classification algorithm.
X86_64ABIInfo::Class Lo, Hi;
----------------
efriedma-quic wrote:
We still need to handle i128 in structs.
We could maybe extend GetINTEGERTypeAtOffset to allow it to return i128 when
appropriate. (That code is pretty fragile, though; see #76017.)
https://github.com/llvm/llvm-project/pull/135230
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