[all-commits] [llvm/llvm-project] b607cd: [RISCV] Use vmv.s.x to build one element splat vec...

[Jianjian Guan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b607cd39281f71528f82f0de8b230fff7217dc7e
      https://github.com/llvm/llvm-project/commit/b607cd39281f71528f82f0de8b230fff7217dc7e
  Author: jacquesguan <jacquesguan at me.com>
  Date:   2022-01-11 (Tue, 11 Jan 2022)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-fp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-int-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-int.ll
    M llvm/test/CodeGen/RISCV/rvv/vreductions-fp-sdnode.ll
    M llvm/test/CodeGen/RISCV/rvv/vreductions-fp-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vreductions-int-rv32.ll
    M llvm/test/CodeGen/RISCV/rvv/vreductions-int-rv64.ll
    M llvm/test/CodeGen/RISCV/rvv/vreductions-int-vp.ll

  Log Message:
  -----------
  [RISCV] Use vmv.s.x to build one element splat vector.

When we want to create an splat vector that only the first element is initialized, we could use vmv.s.x or vfmv.s.f to build it.

Differential Revision: https://reviews.llvm.org/D116277