[llvm-branch-commits] [llvm] [SelectionDAG][X86] Split via Concat vector types for atomic load (PR #120640)

[Matt Arsenault via llvm-branch-commits]

================
@@ -1395,6 +1398,34 @@ void DAGTypeLegalizer::SplitVectorResult(SDNode *N, 
unsigned ResNo) {
     SetSplitVector(SDValue(N, ResNo), Lo, Hi);
 }
 
+void DAGTypeLegalizer::SplitVecRes_ATOMIC_LOAD(AtomicSDNode *LD) {
+  SDLoc dl(LD);
+
+  EVT MemoryVT = LD->getMemoryVT();
+  unsigned NumElts = MemoryVT.getVectorMinNumElements();
+
+  EVT IntMemoryVT = EVT::getVectorVT(*DAG.getContext(), MVT::i16, NumElts);
----------------
arsenm wrote:

Shouldn't be assuming the type. This still should follow allow with 
SplitVecRes_LOAD, by using GetSplitDestVTs

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