[all-commits] [llvm/llvm-project] 2fe457: Filter callbr insts from critical edge splitting

[Bill Wendling via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 2fe457690da0fc38bc7f9f1d0aee2ba6a6a16ada
      https://github.com/llvm/llvm-project/commit/2fe457690da0fc38bc7f9f1d0aee2ba6a6a16ada
  Author: Bill Wendling <isanbard at gmail.com>
  Date:   2020-02-20 (Thu, 20 Feb 2020)

  Changed paths:
    M llvm/lib/Transforms/Scalar/LICM.cpp
    M llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
    A llvm/test/Transforms/LICM/callbr-crash.ll

  Log Message:
  -----------
  Filter callbr insts from critical edge splitting

Similarly to how splitting predecessors with an indirectbr isn't handled
in the generic way, we also shouldn't split callbrs, for similar
reasons.