[all-commits] [llvm/llvm-project] 364837: [WebAssembly] Fix a non-determinism problem in Fix...

[Heejin Ahn via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3648370a79235ddc7a26c2db5b968725c320f6aa
      https://github.com/llvm/llvm-project/commit/3648370a79235ddc7a26c2db5b968725c320f6aa
  Author: Heejin Ahn <aheejin at gmail.com>
  Date:   2020-02-21 (Fri, 21 Feb 2020)

  Changed paths:
    M llvm/lib/Target/WebAssembly/WebAssemblyFixIrreducibleControlFlow.cpp

  Log Message:
  -----------
  [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