[PATCH] D15519: Replace weights by probabilities in BPI.

[Cong Hou via llvm-commits]

congh created this revision.
congh added a reviewer: davidxl.
congh added a subscriber: llvm-commits.

This patch removes all weight-related interfaces from BPI and replace them by probability versions. With this patch, we won't use edge weight anymore in either IR or MC passes. Edge probabilitiy is a better representation in terms of CFG update and validation.

http://reviews.llvm.org/D15519

Files:
  include/llvm/Analysis/BranchProbabilityInfo.h
  include/llvm/Support/BranchProbability.h
  lib/Analysis/BranchProbabilityInfo.cpp
  lib/CodeGen/StackProtector.cpp
  lib/Transforms/Scalar/JumpThreading.cpp
  test/Analysis/BranchProbabilityInfo/noreturn.ll
  test/Transforms/JumpThreading/update-edge-weight.ll

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