[PATCH] D14840: [X86] Detect SAD patterns and emit psadbw instructions on X86.

[Cong Hou via llvm-commits]

congh updated this revision to Diff 49424.
congh added a comment.

Update the patch according to Ahmed's comments.


http://reviews.llvm.org/D14840

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/sad-avx2.ll
  test/CodeGen/X86/sad-avx512.ll
  test/CodeGen/X86/sad-sse2.ll

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