llvm-project

fb2c6597 - [AMDGPU] Use LSH for lowering ctlz_zero_undef.i8/i16 (#88512)

[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@amd.com>