[llvm] [VPlan] Add transformation to narrow interleave groups. (PR #106441)

[via llvm-commits]

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@@ -86,11 +86,11 @@ bool VPRecipeBase::mayWriteToMemory() const {
   case VPBranchOnMaskSC:
   case VPScalarIVStepsSC:
   case VPPredInstPHISC:
+  case VPVectorPointerSC:
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ayalz wrote:

VPVectorPointerSC should still !mayWriteToMemory, but should no longer assert not having an underlying IR which does?

https://github.com/llvm/llvm-project/pull/106441