Max Kazantsev f8a42bca28 [ADCE] Fix incorrect reporting of CFG changes ...

This patch fixes 2 related bugs in ADCE:
- `performDeadCodeElimination` does not report changes if it did ONLY
  CFG changes (affects both old and new pass managers);
- When control flow removal is enabled, new pass manager does not
  drop CFG analyses.

Both can lead to incorrect loop info after ADCE that does only CFG changes.

Differential Revision: https://reviews.llvm.org/D78103
Reviewed By: Denis Antrushin

2020-04-14 20:26:13 +07:00

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2002-01-31-UseStuckAround.ll

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2002-05-22-PHITest.ll

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2002-05-23-ZeroArgPHITest.ll

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2002-05-28-Crash-distilled.ll

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2002-05-28-Crash.ll

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2002-07-17-AssertionFailure.ll

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2002-07-17-PHIAssertion.ll

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2002-07-29-Segfault.ll

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2003-01-22-PredecessorProblem.ll

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2003-04-25-PHIPostDominateProblem.ll

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2003-06-11-InvalidCFG.ll

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2003-06-24-BadSuccessor.ll

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2003-06-24-BasicFunctionality.ll

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2003-09-10-UnwindInstFail.ll

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2003-09-15-InfLoopCrash.ll

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2003-11-16-MissingPostDominanceInfo.ll

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2004-05-04-UnreachableBlock.ll

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2005-02-17-PHI-Invoke-Crash.ll

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2016-09-06.ll

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2017-08-21-DomTree-deletions.ll

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basictest1.ll

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basictest2.ll

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basictest.ll

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blocks-with-dead-term-nondeterministic.ll

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broken-loop-info.ll

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dce_pure_call.ll

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dce_pure_invoke.ll

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debug-info-intrinsic.ll

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delete-profiling-calls-to-constant.ll

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domtree-DoubleDeletion.ll

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unreachable-function.ll

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unreachable.ll

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