[PATCH] Adjust the cost of vectorized SHL/SRL/SRA

[Wei Mi]

> Please can you add uniform non-constant tests to:

>  test/Analysis/CostModel/X86/testshiftashr.ll

>  test/Analysis/CostModel/X86/testshiftlshr.ll

>  test/Analysis/CostModel/X86/testshiftshl.ll


Thanks for the review. I add uniform variant tests in those files. Another change in this patch is to try to set operand to be UniformValue in CostModelAnalysis pass.


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D9923

Files:
  lib/Analysis/CostModel.cpp
  lib/Target/X86/X86TargetTransformInfo.cpp
  lib/Transforms/Vectorize/LoopVectorize.cpp
  test/Analysis/CostModel/X86/testshiftashr.ll
  test/Analysis/CostModel/X86/testshiftlshr.ll
  test/Analysis/CostModel/X86/testshiftshl.ll
  test/Transforms/LoopVectorize/uniform-shift.ll

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