[all-commits] [llvm/llvm-project] afd7db: [SimpleLoopUnswitch] Fix reversed branch during co...

Nikita Popov via All-commits all-commits at lists.llvm.org
Wed Sep 20 01:48:23 PDT 2023

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: afd7db48c55cb87566758e961f1ebac8af16b8bc
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2023-09-20 (Wed, 20 Sep 2023)

  Changed paths:
    M llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
    M llvm/test/Transforms/SimpleLoopUnswitch/inject-invariant-conditions.ll

  Log Message:
  [SimpleLoopUnswitch] Fix reversed branch during condition injection

The in-loop successor is only on the left after a potential condition
inversion. As we re-use the old condition as-is, we should also
reuse the old successors as-is.

Fixes https://github.com/llvm/llvm-project/issues/63962.

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