[all-commits] [llvm/llvm-project] a70029: [CanonicalizeFreezeInLoops] fix duplicate removal ...

[Wei Tao via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a700298b3d538452915703268ca18f7f8f7537e6
      https://github.com/llvm/llvm-project/commit/a700298b3d538452915703268ca18f7f8f7537e6
  Author: Wei Tao <friedrich.taow at gmail.com>
  Date:   2023-12-28 (Thu, 28 Dec 2023)

  Changed paths:
    M llvm/lib/Transforms/Utils/CanonicalizeFreezeInLoops.cpp
    A llvm/test/Transforms/CanonicalizeFreezeInLoops/duplicate_remove.ll

  Log Message:
  -----------
  [CanonicalizeFreezeInLoops] fix duplicate removal (#74716)

This PR fixes #74572 where the freeze instruction could be found twice
by the pass CanonicalizeFreezeInLoops, and then the compiling may crash
in second removal since the instruction has already gone.