[all-commits] [llvm/llvm-project] e84659: [RISCV][CodeGen] Combine vwaddu+vabd(u) to vwabda(u)

Pengcheng Wang via All-commits all-commits at lists.llvm.org
Wed Feb 11 02:53:50 PST 2026


  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e84659b71b2f4b186c84d42e1407b9e9832c3e60
      https://github.com/llvm/llvm-project/commit/e84659b71b2f4b186c84d42e1407b9e9832c3e60
  Author: Pengcheng Wang <wangpengcheng.pp at bytedance.com>
  Date:   2026-02-11 (Wed, 11 Feb 2026)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td
    M llvm/lib/Target/RISCV/RISCVInstrInfoZvabd.td
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-sad.ll

  Log Message:
  -----------
  [RISCV][CodeGen] Combine vwaddu+vabd(u) to vwabda(u)

Note that we only support SEW=8/16 for `vwabda(u)`.

Reviewers: topperc, lukel97, preames

Reviewed By: topperc, lukel97

Pull Request: https://github.com/llvm/llvm-project/pull/180162



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