[all-commits] [llvm/llvm-project] 5b9af3: [RISCV] Provide a more efficient lowering for expe...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5b9af38a03c8119cc2a42ae80d4a25e6f454c721
      https://github.com/llvm/llvm-project/commit/5b9af38a03c8119cc2a42ae80d4a25e6f454c721
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-04-15 (Mon, 15 Apr 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/lib/Target/RISCV/RISCVISelLowering.h
    M llvm/test/CodeGen/RISCV/intrinsic-cttz-elts-vscale.ll
    M llvm/test/CodeGen/RISCV/intrinsic-cttz-elts.ll

  Log Message:
  -----------
  [RISCV] Provide a more efficient lowering for experimental.cttz.elts. (#88552)

For experimental.cttz.elts, we can use a vfirst instruction, but we need
to correct the result if input vector can be 0. cttz.elts returns the
vector length while vfirst returns -1.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications