[all-commits] [llvm/llvm-project] 4a7abf: [InstCombine] Preserve nuw in OptimizePointerDiffe...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4a7abfe0a7b9b43cc60115caab810f4c24e53f1c
      https://github.com/llvm/llvm-project/commit/4a7abfe0a7b9b43cc60115caab810f4c24e53f1c
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-12-04 (Wed, 04 Dec 2024)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
    M llvm/test/Transforms/InstCombine/sub-gep.ll

  Log Message:
  -----------
  [InstCombine] Preserve nuw in OptimizePointerDifference

If both the geps and the subs are nuw the new sub is also nuw.

Proof: https://alive2.llvm.org/ce/z/mM8UvF



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