[all-commits] [llvm/llvm-project] 3c553f: [InstCombine] Infer nuw on mul nsw with non-negati...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3c553fc9e0503240c9fa6d937de0cbcb956303ce
      https://github.com/llvm/llvm-project/commit/3c553fc9e0503240c9fa6d937de0cbcb956303ce
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-04-29 (Mon, 29 Apr 2024)

  Changed paths:
    M llvm/include/llvm/Analysis/ValueTracking.h
    M llvm/include/llvm/Transforms/InstCombine/InstCombiner.h
    M llvm/lib/Analysis/ValueTracking.cpp
    M llvm/lib/Transforms/InstCombine/InstCombineInternal.h
    M llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
    M llvm/test/Transforms/InstCombine/mul.ll

  Log Message:
  -----------
  [InstCombine] Infer nuw on mul nsw with non-negative operands (#90170)

If a mul nsw has non-negative operands, it's also nuw.

Proof: https://alive2.llvm.org/ce/z/2Dz9Uu

Fixes https://github.com/llvm/llvm-project/issues/90020.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications