[all-commits] [llvm/llvm-project] ead294: [NFC][SimplifyCFG] Add test from https://github.co...

[Roman Lebedev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ead294b74c4ba378f9eaf21f5f34bb42d93458ea
      https://github.com/llvm/llvm-project/commit/ead294b74c4ba378f9eaf21f5f34bb42d93458ea
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2022-03-25 (Fri, 25 Mar 2022)

  Changed paths:
    M llvm/test/Transforms/SimplifyCFG/fold-branch-to-common-dest.ll

  Log Message:
  -----------
  [NFC][SimplifyCFG] Add test from https://github.com/llvm/llvm-project/issues/53861


  Commit: f6b60b3b79606612e9df6b3ab8d4367ca673fedc
      https://github.com/llvm/llvm-project/commit/f6b60b3b79606612e9df6b3ab8d4367ca673fedc
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2022-03-25 (Fri, 25 Mar 2022)

  Changed paths:
    M llvm/lib/Transforms/Utils/SimplifyCFG.cpp
    M llvm/test/Transforms/SimplifyCFG/fold-branch-to-common-dest.ll

  Log Message:
  -----------
  [SimplifyCFG] `FoldBranchToCommonDest()`: allow branch-on-select

This whole check is bogus, it's some kind of a profitability check.
For now, simply extend it to not only allow branch-on-binary-ops,
but also on poison-safe logic ops.

Refs. https://github.com/llvm/llvm-project/issues/53861
Refs. https://github.com/llvm/llvm-project/issues/54553


Compare: https://github.com/llvm/llvm-project/compare/43a969debdd8...f6b60b3b7960