[all-commits] [llvm/llvm-project] 351055: [RISCV] Check for COPY_TO_REGCLASS in usesAllOnesM...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3510552df67397fa4096446fb7f8bb59adb7f214
      https://github.com/llvm/llvm-project/commit/3510552df67397fa4096446fb7f8bb59adb7f214
  Author: Luke Lau <luke at igalia.com>
  Date:   2023-09-22 (Fri, 22 Sep 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
    M llvm/test/CodeGen/RISCV/rvv/nearbyint-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/rint-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/round-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/roundeven-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/roundtozero-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vcopysign-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vfabs-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vfadd-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vfdiv-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vfmax-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vfmin-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vfmul-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vfneg-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vfsqrt-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vfsub-vp.ll

  Log Message:
  -----------
  [RISCV] Check for COPY_TO_REGCLASS in usesAllOnesMask (#67037)

Sometimes with mask vectors that have been widened, there is a
CopyToRegClass node in between the VMSET and the CopyToReg.

This is a resurrection of https://reviews.llvm.org/D148524, and is
needed to
remove the mask operand when it's extracted from a subvector as planned
in
https://github.com/llvm/llvm-project/pull/66267#discussion_r1331998919