[PATCH] D151658: [LV] Check if value was already not uniform for previous VF.

[Ayal Zaks via Phabricator via llvm-commits]

Ayal added inline comments.


================
Comment at: llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:4684
+        return false;
+    }
     if (!Legal->isUniformMemOp(*I))
----------------
This looks right.
Also holds for non-MemOpUse?
Furthermore, if value is uniform for PrevVF, suffice to only check if SCEVs of lanes 0 and VF-1 are equal.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D151658/new/

https://reviews.llvm.org/D151658