[PATCH] D20598: [X86] Detect SAD patterns and emit psadbw instructions on X86 redux

[Michael Kuperstein via llvm-commits]

mkuper updated this revision to Diff 58739.
mkuper added a comment.

Eliminated redundant pshufd.


http://reviews.llvm.org/D20598

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/sad.ll

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