[all-commits] [llvm/llvm-project] d5f642: [AArch64][SVE] Optimize logical ops with convert.t...

[Vladimir Miloserdov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d5f6426a52af4966bd6902634648ba40c23bdc35
      https://github.com/llvm/llvm-project/commit/d5f6426a52af4966bd6902634648ba40c23bdc35
  Author: Vladimir Miloserdov <milosvova at gmail.com>
  Date:   2026-09-11 (Fri, 11 Sep 2026)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    A llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-and-or-with-all-true.ll

  Log Message:
  -----------
  [AArch64][SVE] Optimize logical ops with convert.to.svbool (#160408)

When both operands of a logical operation (and/or/xor) are
convert.to.svbool
from the same narrower type, unwrap to that type, simplify using
simplifyBinOp,
and rewrap the result. This eliminates redundant instructions in cases
like:
 svand_z(svptrue_b8(), svpnext_b16(prev, pg), svptrue_b16());

Fixes https://github.com/llvm/llvm-project/issues/160279.

---------

Co-authored-by: Paul Walker <paul.walker at arm.com>



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