[PATCH] D64618: [Loop Peeling] Fix the bug with IDom setting for exit loops

[Serguei Katkov via Phabricator via llvm-commits]

skatkov created this revision.
skatkov added reviewers: reames, fhahn.
Herald added subscribers: zzheng, hiraditya.
Herald added a project: LLVM.

It is possible that loop exit has two predecessors in a loop body.
In this case after the peeling the iDom of the exit should be a clone of
iDom of original exit but no a clone of a block coming to this exit.


https://reviews.llvm.org/D64618

Files:
  llvm/lib/Transforms/Utils/LoopUnrollPeel.cpp
  llvm/test/Transforms/LoopUnroll/peel-loop-pgo-deopt-idom.ll

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