[all-commits] [llvm/llvm-project] a9b077: [SimplifyCFG] Sanity assert in iterativelySimplifyCFG

[Max Kazantsev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a9b0776a81e84d8042716863842fe1f8adf39cad
      https://github.com/llvm/llvm-project/commit/a9b0776a81e84d8042716863842fe1f8adf39cad
  Author: Max Kazantsev <mkazantsev at azul.com>
  Date:   2021-10-25 (Mon, 25 Oct 2021)

  Changed paths:
    M llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp

  Log Message:
  -----------
  [SimplifyCFG] Sanity assert in iterativelySimplifyCFG

We observe a hang within iterativelySimplifyCFG due to infinite
loop execution. Currently, there is no limit to this loop, so
in case of bug it just works forever. This patch adds an assert
that will break it after 1000 iterations if it didn't converge.