[PATCH] merge consecutive stores of extracted vector elements (PR21711)

[Sanjay Patel]

Thanks, Quentin. Yes, there's a big block of copy/paste here. I've moved the duplicated logic into a helper function in this version of the patch.


http://reviews.llvm.org/D6850

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/X86/MergeConsecutiveStores.ll

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