[all-commits] [llvm/llvm-project] 56777e: [SimplifyCFG] Avoid use-after-free when removing i...

[Yingwei Zheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 56777e7da2cb30f72a3ddc9861a2fbe3b9adbc6b
      https://github.com/llvm/llvm-project/commit/56777e7da2cb30f72a3ddc9861a2fbe3b9adbc6b
  Author: Yingwei Zheng <dtcxzyw2333 at gmail.com>
  Date:   2025-10-31 (Fri, 31 Oct 2025)

  Changed paths:
    M llvm/lib/Transforms/Utils/SimplifyCFG.cpp
    A llvm/test/Transforms/SimplifyCFG/pr165301.ll

  Log Message:
  -----------
  [SimplifyCFG] Avoid use-after-free when removing incoming values from PHI nodes (#165744)

`PHINode::removeIncomingValue` removes itself when there are no incoming
edges. Then we cannot use it to retrieve the next instruction.

Closes https://github.com/llvm/llvm-project/issues/165301.



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