[all-commits] [llvm/llvm-project] 681d6c: [BranchProbabilityInfo] Introduce method copyEdgeP...

[Yevgeny Rouban via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 681d6c711f2743b69eaed5b3708e7c4bf86489c2
      https://github.com/llvm/llvm-project/commit/681d6c711f2743b69eaed5b3708e7c4bf86489c2
  Author: Yevgeny Rouban <yrouban at azul.com>
  Date:   2020-11-06 (Fri, 06 Nov 2020)

  Changed paths:
    M llvm/include/llvm/Analysis/BranchProbabilityInfo.h
    M llvm/lib/Analysis/BranchProbabilityInfo.cpp

  Log Message:
  -----------
  [BranchProbabilityInfo] Introduce method copyEdgeProbabilities(). NFC

A new method is introduced to allow bulk copy of outgoing edge
probabilities from one block to another. This can be useful when
a block is cloned from another one and we do not know if there
are edge probabilities set for the original block or not.
Copying outside of the BranchProbabilityInfo class makes the user
unconditionally set the cloned block's edge probabilities even if
they are unset for the original block.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D90839