[all-commits] [llvm/llvm-project] fb2c65: [AMDGPU] Use LSH for lowering ctlz_zero_undef.i8/i...

[Leon Clark via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fb2c6597e39e9e1a775525ea0236b2f89e46acff
      https://github.com/llvm/llvm-project/commit/fb2c6597e39e9e1a775525ea0236b2f89e46acff
  Author: Leon Clark <PeddleSpam at users.noreply.github.com>
  Date:   2024-05-19 (Sun, 19 May 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.h
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-ctlz-zero-undef.mir
    M llvm/test/CodeGen/AMDGPU/ctlz_zero_undef.ll

  Log Message:
  -----------
  [AMDGPU] Use LSH for lowering ctlz_zero_undef.i8/i16 (#88512)

Use LSH to lower ctlz_zero_undef instead of subtracting leading zeros
for i8 and i16.

Related to [77615](https://github.com/llvm/llvm-project/pull/77615).

---------

Co-authored-by: Leon Clark <leoclark at amd.com>



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