[PATCH] D157462: LoopRotate: Add code to update branch weights

[Matthias Braun via Phabricator via llvm-commits]

MatzeB updated this revision to Diff 552834.
MatzeB added a comment.

- Fixed overflow test when scaling up weights.
- Still need a better way than hardcoding 127 as "likely" branch weight; hoping that people can give me some hint in the discussion I started in https://reviews.llvm.org/D158642


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D157462/new/

https://reviews.llvm.org/D157462

Files:
  llvm/lib/Transforms/Utils/LoopRotationUtils.cpp
  llvm/test/Transforms/LoopRotate/update-branch-weights.ll
  llvm/test/Transforms/LoopSimplify/merge-exits.ll

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