[PATCH] D19926: Simplify CFG before assigning discriminator.

[Dehao Chen via llvm-commits]

danielcdh created this revision.
danielcdh added reviewers: dblaikie, dnovillo, davidxl.
danielcdh added a subscriber: llvm-commits.

We need to clean up CFG before assigning discriminator to minimize the impact of optimization on debug info.

http://reviews.llvm.org/D19926

Files:
  include/llvm/Transforms/Scalar/SimplifyCFG.h
  lib/Transforms/Scalar/SimplifyCFGPass.cpp
  lib/Transforms/Utils/AddDiscriminators.cpp
  test/Transforms/AddDiscriminators/multiple.ll
  test/Transforms/AddDiscriminators/oneline.ll

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