[llvm-branch-commits] [llvm] [SelectionDAG][X86] Widen <2 x T> vector types for atomic load (PR #120598)

[Simon Pilgrim via llvm-branch-commits]

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@@ -5907,6 +5910,91 @@ SDValue DAGTypeLegalizer::WidenVecRes_INSERT_VECTOR_ELT(SDNode *N) {
                      N->getOperand(1), N->getOperand(2));
 }
 
+static std::optional<EVT> findMemType(SelectionDAG &DAG,
+                                      const TargetLowering &TLI, unsigned Width,
+                                      EVT WidenVT, unsigned Align,
+                                      unsigned WidenEx);
+
+SDValue DAGTypeLegalizer::WidenVecRes_ATOMIC_LOAD(AtomicSDNode *LD) {
+  SmallVector<SDValue, 16> LdChain; // Chain for the series of load
+
+  EVT WidenVT = TLI.getTypeToTransformTo(*DAG.getContext(),LD->getValueType(0));
+  EVT LdVT    = LD->getMemoryVT();
+  SDLoc dl(LD);
+  assert(LdVT.isVector() && WidenVT.isVector());
+  assert(LdVT.isScalableVector() == WidenVT.isScalableVector());
+  assert(LdVT.getVectorElementType() == WidenVT.getVectorElementType());
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RKSimon wrote:

(style) missing assert messages

https://github.com/llvm/llvm-project/pull/120598