[PATCH] D114873: [SLP]Introduce isUndefVector function to check for undef vectors.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon accepted this revision.
RKSimon added a comment.
This revision is now accepted and ready to land.

LGTM with one minor



================
Comment at: llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:293
+    return false;
+  if (!C->containsUndefOrPoisonElement() || !isa<FixedVectorType>(C->getType()))
+    return false;
----------------
remove the isa<> - the dyn_cast below handles it


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D114873