================
@@ -31259,14 +31274,23 @@ static SDValue LowerATOMIC_STORE(SDValue Op,
SelectionDAG &DAG,
if (!IsSeqCst && IsTypeLegal)
return Op;
- if (VT == MVT::i64 && !IsTypeLegal) {
+ if (!IsTypeLegal && !Subtarget.useSoftFloat() &&
+ !DAG.getMachineFunction().getFunction().hasFnAttribute(
+ Attribute::NoImplicitFloat)) {
+ SDValue Chain;
+ // For illegal i128 atomic_store, when AVX is enabled, we can simply emit a
+ // vector store.
+ if (VT == MVT::i128) {
+ if (Subtarget.is64Bit() && Subtarget.hasAVX()) {
----------------
jyknight wrote:
Done.
https://github.com/llvm/llvm-project/pull/74275
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