[PATCH] D158668: Add getLikelyBranchWeight helper function

[Matthias Braun via Phabricator via cfe-commits]

MatzeB created this revision.
MatzeB added reviewers: lebedev.ri, spatel, davidxl, wenlei, hoy, paulkirth.
Herald added subscribers: StephenFan, modimo, hiraditya, mcrosier.
Herald added a project: All.
MatzeB requested review of this revision.
Herald added subscribers: llvm-commits, cfe-commits, wangpc.
Herald added projects: clang, LLVM.

- Add getLikelyBranchWeight() function returning the value of the `-likely-branch-weight` option defaulting to 2000.
- Remove `-unlikely-branch-weight` option and just use 1.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D158668

Files:
  clang/test/CodeGenCXX/attr-likelihood-if-branch-weights.cpp
  llvm/docs/MisExpect.rst
  llvm/include/llvm/IR/ProfDataUtils.h
  llvm/lib/IR/ProfDataUtils.cpp
  llvm/lib/Transforms/Scalar/LowerExpectIntrinsic.cpp
  llvm/test/Transforms/LowerExpectIntrinsic/phi_unexpect.ll
  llvm/test/Transforms/PGOProfile/misexpect-branch-overflow.ll

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