[all-commits] [llvm/llvm-project] d1fe7a: [LLVM][DAGCombiner][SVE] Fold vselect into merge_p...

[Paul Walker via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d1fe7a29a6c2617de0b3ab7b06b3d22a8509ae41
      https://github.com/llvm/llvm-project/commit/d1fe7a29a6c2617de0b3ab7b06b3d22a8509ae41
  Author: Paul Walker <paul.walker at arm.com>
  Date:   2025-07-08 (Tue, 08 Jul 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
    M llvm/test/CodeGen/AArch64/sve-merging-unary.ll

  Log Message:
  -----------
  [LLVM][DAGCombiner][SVE] Fold vselect into merge_pasthru_op. (#146917)

vselect A, (merge_pasthru_op all_active, B,{Bn,} -), C
  vselect A, (merge_pasthru_op -, B,{Bn,} undef), C
  vselect A, (merge_pasthru_op A, B,{Bn,} -), C
    -> merge_pasthru_op A, B,{Bn,} C



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