[PATCH] D20957: [JumpThreading] Prevent dangling pointer problems in BranchProbabilityInfo
Igor Laevsky via llvm-commits
llvm-commits at lists.llvm.org
Fri Jun 3 05:19:12 PDT 2016
igor-laevsky created this revision.
igor-laevsky added reviewers: sanjoy, reames, hfinkel.
igor-laevsky added a subscriber: llvm-commits.
We should update results of the BranchProbabilityInfo after removing block in JumpThreading. Otherwise we will get dangling pointer inside BranchProbabilityInfo cache. Which can lead to various problems. Note that there is similar issue for the BlockFrequencyInfo but it's a subject for separate change.
http://reviews.llvm.org/D20957
Files:
include/llvm/Analysis/BranchProbabilityInfo.h
include/llvm/Transforms/Utils/Local.h
lib/Analysis/BranchProbabilityInfo.cpp
lib/Transforms/Scalar/JumpThreading.cpp
lib/Transforms/Utils/Local.cpp
unittests/Analysis/BlockFrequencyInfoTest.cpp
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