[all-commits] [llvm/llvm-project] db3f32: [RISCV] Use vfirst.m to extract the first element ...

[Jianjian Guan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: db3f3243bb85253eaf0e483452fdbfd5baf7ffd1
      https://github.com/llvm/llvm-project/commit/db3f3243bb85253eaf0e483452fdbfd5baf7ffd1
  Author: jacquesguan <Jianjian.Guan at streamcomputing.com>
  Date:   2023-01-03 (Tue, 03 Jan 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/lib/Target/RISCV/RISCVISelLowering.h
    M llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td
    M llvm/test/CodeGen/RISCV/rvv/constant-folding-crash.ll
    M llvm/test/CodeGen/RISCV/rvv/extractelt-i1.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vector-shuffle-reverse.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-extract-i1.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-masked-gather.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-masked-scatter.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vreductions-mask.ll

  Log Message:
  -----------
  [RISCV] Use vfirst.m to extract the first element from mask vector.

This patch uses vfirst.m to extract the first bit of mask.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D139512