[PATCH] D158449: [IR]Add NumSrcElts param to is..Mask static function in ShuffleVectorInst.

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


================
Comment at: llvm/lib/IR/Instructions.cpp:2366
       continue;
-    if (Mask[i] != (NumElts - 1 - i) && Mask[i] != (NumElts + NumElts - 1 - i))
+    if (Mask[I] != (NumSrcElts - 1 - I) &&
+        Mask[I] != (NumSrcElts + NumSrcElts - 1 - I))
----------------
If Mask.size() == 4 and NumSrcElts == 6. Then this considers <5, 4, 3, 2> as a reverse?


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CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D158449/new/

https://reviews.llvm.org/D158449