[llvm-branch-commits] [llvm] [SelectionDAG][X86] Split <2 x T> vector types for atomic load (PR #120640)

[Matt Arsenault via llvm-branch-commits]

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@@ -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,
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arsenm wrote:

Title should also not say split, this is forcing the type to a legal integer 

https://github.com/llvm/llvm-project/pull/120640