[llvm] [VPlan] zext canonical IV in convertToStridedAccesses (PR #212291)

[Luke Lau via llvm-commits]

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@@ -5815,7 +5815,7 @@ void VPlanTransforms::convertToStridedAccesses(VPlan &Plan,
       Type *IndexTy = Plan.getDataLayout().getIndexType(Ptr->getScalarType());
       assert(IndexTy == StrideInBytes->getScalarType() &&
              "Stride type from SCEV must match the index type");
-      VPValue *CanIV = Builder.createScalarSExtOrTrunc(
+      VPValue *CanIV = Builder.createScalarZExtOrTrunc(
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lukel97 wrote:

I had the same thought back when reviewing https://github.com/llvm/llvm-project/pull/201070, but it turns out it's correct because GEP indices are truncated https://github.com/llvm/llvm-project/pull/201070#discussion_r3354521308



https://github.com/llvm/llvm-project/pull/212291