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Backport D74999: [WebAssembly] Fix a non-determinism problem in FixIrreducibleControlFlow #68

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Commits on Jul 9, 2020

  1. [WebAssembly] Fix a non-determinism problem in FixIrreducibleControlFlow

    Summary:
    We already sorted the blocks when fixing up a set of mutual
    loop entries, however, there can be multiple sets of such
    mutual loop entries, and the order we encounter them
    should not be random, so sort them too.
    
    Fixes https://bugs.llvm.org/show_bug.cgi?id=44982
    
    Patch by Alon Zakai (kripken)
    
    Reviewers: aheejin, sbc100, dschuff
    
    Subscribers: mgrang, sunfish, hiraditya, jgravelle-google, llvm-commits
    
    Tags: #llvm
    
    Differential Revision: https://reviews.llvm.org/D74999
    aheejin authored and eddyb committed Jul 9, 2020
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