[PATCH] D15177: [LoopVectorizer] Refine loop vectorizer's register usage calculator by ignoring specific instructions.

[Cong Hou via llvm-commits]

congh updated this revision to Diff 42645.
congh added a comment.

Update the patch according to Hal's comment.


http://reviews.llvm.org/D15177

Files:
  lib/Transforms/Vectorize/LoopVectorize.cpp
  test/Transforms/LoopVectorize/X86/vector_max_bandwidth.ll
  test/Transforms/LoopVectorize/reg-usage.ll

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