[llvm] [VPlan] Extract reverse operation for reverse accesses (PR #146525)

[Luke Lau via llvm-commits]

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@@ -917,6 +918,8 @@ Value *VPInstruction::generate(VPTransformState &State) {
 
     return Res;
   }
+  case VPInstruction::Reverse:
+    return Builder.CreateVectorReverse(State.get(getOperand(0)), "reverse");
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lukel97 wrote:

> Even though the function is named optimizeMaskToEVL, EVL transform for both WidenLoadRecipe and ReverseRecipe seems necessary for correctness.

At the moment yes because of how we replace VPEndPointerRecipe globally, I've opened up #152542 for this. 


https://github.com/llvm/llvm-project/pull/146525