[PATCH] D76508: [VectorUtils] move x86's scaleShuffleMask to generic VectorUtils

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon accepted this revision.
RKSimon added a comment.

LGTM



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Comment at: llvm/include/llvm/Analysis/VectorUtils.h:346
+  assert(Scale > 0 && "Unexpected scaling factor");
+  size_t NumElts = Mask.size();
+  ScaledMask.assign(NumElts * Scale, -1);
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Retaining a fast copy path for Scale == 1 would make sense


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