[all-commits] [llvm/llvm-project] 0f4b9a: [DAGCombiner] Fold `sub nuw C, x` -> `xor x, C` wh...

[Madhur Kumar via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0f4b9a7f2efaadd617994741bd2e61642ef2f96b
      https://github.com/llvm/llvm-project/commit/0f4b9a7f2efaadd617994741bd2e61642ef2f96b
  Author: Madhur Kumar <152476790+MadhurKumar004 at users.noreply.github.com>
  Date:   2026-04-17 (Fri, 17 Apr 2026)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/test/CodeGen/AArch64/pr86717.ll
    M llvm/test/CodeGen/RISCV/pr84200.ll
    A llvm/test/CodeGen/X86/sub-to-xor-masked.ll

  Log Message:
  -----------
  [DAGCombiner] Fold `sub nuw C, x` -> `xor x, C` when C is a mask (#192692)

fixes : https://github.com/llvm/llvm-project/issues/86874

Alive proof: https://alive2.llvm.org/ce/z/YKCPCA



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