[all-commits] [llvm/llvm-project] ffb312: [CIR] Don't 'simplify' switch-case if there is som...

[Erich Keane via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ffb3120b0aae71d16c275bfb4a56b8633897fdae
      https://github.com/llvm/llvm-project/commit/ffb3120b0aae71d16c275bfb4a56b8633897fdae
  Author: Erich Keane <ekeane at nvidia.com>
  Date:   2026-09-30 (Wed, 30 Sep 2026)

  Changed paths:
    M clang/lib/CIR/Dialect/Transforms/CIRSimplify.cpp
    M clang/test/CIR/Transforms/switch-fold.cir

  Log Message:
  -----------
  [CIR] Don't 'simplify' switch-case if there is something in the way. (#227437)

The simplify case code was assuming that cases were mergeable, and
didn't realize that code in the middle (like the goto in the test case)
meant they couldn't be re-joined. This patch adds that to the
CIRSimplify logic to make sure we con't try to combine cases that have
something 'in between'.



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