[all-commits] [llvm/llvm-project] 972e73: [RISCV][CodeGen] Lower `ISD::ABS` to Zvabd instruc...

[Pengcheng Wang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 972e73b812cb7b6dd349c7c07daae73314f29e8f
      https://github.com/llvm/llvm-project/commit/972e73b812cb7b6dd349c7c07daae73314f29e8f
  Author: Pengcheng Wang <wangpengcheng.pp at bytedance.com>
  Date:   2026-02-09 (Mon, 09 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/lib/Target/RISCV/RISCVInstrInfoZvk.td
    M llvm/test/CodeGen/RISCV/rvv/abs-sdnode.ll
    M llvm/test/CodeGen/RISCV/rvv/abs-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-abd.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-abs-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-abs.ll

  Log Message:
  -----------
  [RISCV][CodeGen] Lower `ISD::ABS` to Zvabd instructions

We add pseudos/patterns for `vabs.v` instruction and handle the
lowering in `RISCVTargetLowering::lowerABS`.

Reviewers: topperc, 4vtomat, mshockwave, preames, lukel97, tclin914

Reviewed By: mshockwave

Pull Request: https://github.com/llvm/llvm-project/pull/180142



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