defm S_FF1_I32_B64 : SOP1_32_64 <sop1<0x14, 0x11>, "s_ff1_i32_b64", []>;
defm S_FLBIT_I32_B32 : SOP1_32 <sop1<0x15, 0x12>, "s_flbit_i32_b32",
- [(set i32:$dst, (ctlz_zero_undef i32:$src0))]
+ [(set i32:$dst, (AMDGPUffbh_u32 i32:$src0))]
>;
defm S_FLBIT_I32_B64 : SOP1_32_64 <sop1<0x16, 0x13>, "s_flbit_i32_b64", []>;