[llvm] [VPlan] Split VPWidenMemoryInstructionRecipe (NFCI). (PR #87411)

[via llvm-commits]

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@@ -875,7 +875,8 @@ class VPSingleDefRecipe : public VPRecipeBase, public VPValue {
       return true;
     case VPRecipeBase::VPInterleaveSC:
     case VPRecipeBase::VPBranchOnMaskSC:
-    case VPRecipeBase::VPWidenMemoryInstructionSC:
+    case VPRecipeBase::VPWidenLoadSC:
+    case VPRecipeBase::VPWidenStoreSC:
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ayalz wrote:

Hmm, the TODO below suggests that Loads should (also) be considered single def. Should VPWidenLoadRecipe inherit from both VPWidenMemoryRecipe and VPSingleDefRecipe? (Deserves a separate patch, but worth thinking when introducing the class hierarchy here.)

https://github.com/llvm/llvm-project/pull/87411