[PATCH] D40873: [PGO] handle infinite loop properly in pgo instrumention

[David Li via Phabricator via llvm-commits]

davidxl created this revision.
Herald added a subscriber: sanjoy.

The original fix id https://reviews.llvm.org/D40702 introduces a memory leak -- a surprising side effect of calling 'getAnalysis<>' method. Calling this has the effect of releasing the memory of current BFI and BPI.

The right way is to get the cached BPI and LI from the current BFI.


https://reviews.llvm.org/D40873

Files:
  include/llvm/Analysis/BlockFrequencyInfo.h
  include/llvm/Analysis/BlockFrequencyInfoImpl.h
  lib/Analysis/BlockFrequencyInfo.cpp
  lib/Transforms/Instrumentation/CFGMST.h
  lib/Transforms/Instrumentation/PGOInstrumentation.cpp

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