[PATCH] D20292: [X86] Remove transformVSELECTtoBlendVECTOR_SHUFFLE

[Michael Kuperstein via llvm-commits]

mkuper created this revision.
mkuper added a reviewer: chandlerc.
mkuper added a subscriber: llvm-commits.

The new X86 shuffle lowering can do just fine without transforming vselects into vector_shuffles.
It looks like the only thing this code does right now is cause trouble - in particular, it can lead to combine/legalization infinite loops.

This fixes PR27689.

http://reviews.llvm.org/D20292

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/vector-blend.ll

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