1 ; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=SI %s
2 ; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=fiji -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=VI %s
4 declare half @llvm.log2.f16(half %a)
5 declare <2 x half> @llvm.log2.v2f16(<2 x half> %a)
7 ; GCN-LABEL: {{^}}log2_f16
8 ; GCN: buffer_load_ushort v[[A_F16:[0-9]+]]
9 ; SI: v_cvt_f32_f16_e32 v[[A_F32:[0-9]+]], v[[A_F16]]
10 ; SI: v_log_f32_e32 v[[R_F32:[0-9]+]], v[[A_F32]]
11 ; SI: v_cvt_f16_f32_e32 v[[R_F16:[0-9]+]], v[[R_F32]]
12 ; VI: v_log_f16_e32 v[[R_F16:[0-9]+]], v[[A_F16]]
13 ; GCN: buffer_store_short v[[R_F16]]
15 define amdgpu_kernel void @log2_f16(
16 half addrspace(1)* %r,
17 half addrspace(1)* %a) {
19 %a.val = load half, half addrspace(1)* %a
20 %r.val = call half @llvm.log2.f16(half %a.val)
21 store half %r.val, half addrspace(1)* %r
25 ; GCN-LABEL: {{^}}log2_v2f16
26 ; GCN: buffer_load_dword v[[A_V2_F16:[0-9]+]]
27 ; SI: v_lshrrev_b32_e32 v[[A_F16_1:[0-9]+]], 16, v[[A_V2_F16]]
28 ; SI-DAG: v_cvt_f32_f16_e32 v[[A_F32_0:[0-9]+]], v[[A_V2_F16]]
29 ; SI-DAG: v_cvt_f32_f16_e32 v[[A_F32_1:[0-9]+]], v[[A_F16_1]]
30 ; SI-DAG: v_log_f32_e32 v[[R_F32_0:[0-9]+]], v[[A_F32_0]]
31 ; SI-DAG: v_log_f32_e32 v[[R_F32_1:[0-9]+]], v[[A_F32_1]]
32 ; SI-DAG: v_cvt_f16_f32_e32 v[[R_F16_0:[0-9]+]], v[[R_F32_0]]
33 ; SI-DAG: v_cvt_f16_f32_e32 v[[R_F16_1:[0-9]+]], v[[R_F32_1]]
34 ; SI-DAG: v_lshlrev_b32_e32 v[[R_F16_HI:[0-9]+]], 16, v[[R_F16_1]]
36 ; SI: v_or_b32_e32 v[[R_V2_F16:[0-9]+]], v[[R_F16_0]], v[[R_F16_HI]]
38 ; VI-DAG: v_log_f16_e32 v[[R_F16_0:[0-9]+]], v[[A_V2_F16]]
39 ; VI-DAG: v_log_f16_sdwa v[[R_F16_1:[0-9]+]], v[[A_V2_F16]] dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:WORD_1
41 ; VI: v_or_b32_e32 v[[R_V2_F16:[0-9]+]], v[[R_F16_0]], v[[R_F16_1]]
43 ; GCN: buffer_store_dword v[[R_V2_F16]]
45 define amdgpu_kernel void @log2_v2f16(
46 <2 x half> addrspace(1)* %r,
47 <2 x half> addrspace(1)* %a) {
49 %a.val = load <2 x half>, <2 x half> addrspace(1)* %a
50 %r.val = call <2 x half> @llvm.log2.v2f16(<2 x half> %a.val)
51 store <2 x half> %r.val, <2 x half> addrspace(1)* %r