================
@@ -1391,6 +1394,38 @@ void DAGTypeLegalizer::SplitVectorResult(SDNode *N,
unsigned ResNo) {
SetSplitVector(SDValue(N, ResNo), Lo, Hi);
}
+void DAGTypeLegalizer::SplitVecRes_ATOMIC_LOAD(AtomicSDNode *LD, SDValue &Lo,
+ SDValue &Hi) {
+ EVT LoVT, HiVT;
+ SDLoc dl(LD);
+ std::tie(LoVT, HiVT) = DAG.GetSplitDestVTs(LD->getValueType(0));
+
+ SDValue Ch = LD->getChain();
+ SDValue Ptr = LD->getBasePtr();
+ EVT MemoryVT = LD->getMemoryVT();
+
+ EVT LoMemVT, HiMemVT;
+ std::tie(LoMemVT, HiMemVT) = DAG.GetSplitDestVTs(MemoryVT);
+
+ Lo = DAG.getAtomic(ISD::ATOMIC_LOAD, dl, LoMemVT, LoMemVT, Ch, Ptr,
----------------
arsenm wrote:
This should create one ATOMIC_LOAD with the bitcast integer type. You then
unpack that result into the expected Lo/Hi, not the direct atomic results
https://github.com/llvm/llvm-project/pull/120640
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