[llvm] [VPlan] Extend getSCEVForVPV, use to compute VPReplicateRecipe cost. (PR #161276)

[Ramkumar Ramachandra via llvm-commits]

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@@ -3842,8 +3842,9 @@ const SCEV *ScalarEvolution::getGEPExpr(const SCEV *BaseExpr,
   // Add the base address and the offset. We cannot use the nsw flag, as the
   // base address is unsigned. However, if we know that the offset is
   // non-negative, we can use nuw.
-  bool NUW = NW.hasNoUnsignedWrap() ||
-             (NW.hasNoUnsignedSignedWrap() && isKnownNonNegative(Offset));
+  bool NUW =
+      hasFlags(OffsetWrap, SCEV::FlagNUW) ||
+      (hasFlags(OffsetWrap, SCEV::FlagNSW) && isKnownNonNegative(Offset));
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artagnon wrote:

By the way, if you're having trouble with merges or finding them messy (as I do), you can rebase in the future: the new GitHub UI now preserves review comments at the right line numbers.

https://github.com/llvm/llvm-project/pull/161276