[all-commits] [llvm/llvm-project] f920b7: [FlattenCFG] Fix the miscompilation where phi node...

[Yingwei Zheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f920b746ea818f1d21f317116cbb105e3e85979a
      https://github.com/llvm/llvm-project/commit/f920b746ea818f1d21f317116cbb105e3e85979a
  Author: Yingwei Zheng <dtcxzyw2333 at gmail.com>
  Date:   2024-02-25 (Sun, 25 Feb 2024)

  Changed paths:
    M llvm/lib/Transforms/Utils/FlattenCFG.cpp
    M llvm/test/Transforms/Util/flatten-cfg.ll

  Log Message:
  -----------
  [FlattenCFG] Fix the miscompilation where phi nodes exist in the merge point (#81987)

When there are phi nodes in the merge point of the if-region, we cannot
do the merge.
Alive2: https://alive2.llvm.org/ce/z/DbgEan
Fixes #70900.



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