[all-commits] [llvm/llvm-project] c5fdab: [RISCV] Use tail undisturbed vmv.v.v instead of va...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c5fdab30143aeb45fc4bfebc9fcd551127e0c569
      https://github.com/llvm/llvm-project/commit/c5fdab30143aeb45fc4bfebc9fcd551127e0c569
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2023-06-12 (Mon, 12 Jun 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.h
    R llvm/test/CodeGen/RISCV/rvv/rvv-vmerge-to-vadd.ll
    A llvm/test/CodeGen/RISCV/rvv/rvv-vmerge-to-vmv.ll

  Log Message:
  -----------
  [RISCV] Use tail undisturbed vmv.v.v instead of vadd.vi with 0 for vp.merge with all ones mask.

No idea what I was thinking when I suggested vadd.vi.

Reviewed By: reames, frasercrmck, fakepaper56

Differential Revision: https://reviews.llvm.org/D152553