[PATCH] Generate better code for shuffles

[Michael Kuperstein]

Rebased patch.

By the way, Sanjay, I've verified that the test-cases you have in vec_extract-avx.ll pass with this.


http://reviews.llvm.org/D6678

Files:
  include/llvm/Target/TargetLowering.h
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86ISelLowering.h
  test/CodeGen/X86/vector-shuffle-combining.ll

EMAIL PREFERENCES
  http://reviews.llvm.org/settings/panel/emailpreferences/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: D6678.17337.patch
Type: text/x-patch
Size: 6143 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20141216/f5b48aa8/attachment.bin>