[PATCH] D17041: [X86] Don't assume that a shuffle operand is #0: it isn't for VPERMV.

[Ahmed Bougacha via llvm-commits]

ab updated this revision to Diff 47486.
ab added a comment.

Add back context to original patch.


http://reviews.llvm.org/D17041

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/avx2-vperm-combining.ll

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