[PATCH] D20307: Follow-up patch of http://reviews.llvm.org/D19948 to handle missing profiles when simplifying CFG.

[Dehao Chen via llvm-commits]

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

Set default branch weight to 1:1 if one of the branch has profile missing when simplifying CFG.

http://reviews.llvm.org/D20307

Files:
  lib/Transforms/Utils/SimplifyCFG.cpp
  test/Transforms/SimplifyCFG/preserve-branchweights.ll

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