1; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC -check-prefix=GCN %s 2; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=VI -check-prefix=FUNC -check-prefix=GCN %s 3; RUN: llc -march=r600 -mcpu=cypress -verify-machineinstrs < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s 4 5declare i8 @llvm.ctlz.i8(i8, i1) nounwind readnone 6 7declare i32 @llvm.ctlz.i32(i32, i1) nounwind readnone 8declare <2 x i32> @llvm.ctlz.v2i32(<2 x i32>, i1) nounwind readnone 9declare <4 x i32> @llvm.ctlz.v4i32(<4 x i32>, i1) nounwind readnone 10 11declare i64 @llvm.ctlz.i64(i64, i1) nounwind readnone 12declare <2 x i64> @llvm.ctlz.v2i64(<2 x i64>, i1) nounwind readnone 13declare <4 x i64> @llvm.ctlz.v4i64(<4 x i64>, i1) nounwind readnone 14 15declare i32 @llvm.r600.read.tidig.x() nounwind readnone 16 17; FUNC-LABEL: {{^}}s_ctlz_zero_undef_i32: 18; GCN: s_load_dword [[VAL:s[0-9]+]], 19; GCN: s_flbit_i32_b32 [[SRESULT:s[0-9]+]], [[VAL]] 20; GCN: v_mov_b32_e32 [[VRESULT:v[0-9]+]], [[SRESULT]] 21; GCN: buffer_store_dword [[VRESULT]], 22; GCN: s_endpgm 23; EG: MEM_RAT_CACHELESS STORE_RAW [[RESULT:T[0-9]+\.[XYZW]]] 24; EG: FFBH_UINT {{\*? *}}[[RESULT]] 25define void @s_ctlz_zero_undef_i32(i32 addrspace(1)* noalias %out, i32 %val) nounwind { 26 %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone 27 store i32 %ctlz, i32 addrspace(1)* %out, align 4 28 ret void 29} 30 31; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32: 32; GCN: buffer_load_dword [[VAL:v[0-9]+]], 33; GCN: v_ffbh_u32_e32 [[RESULT:v[0-9]+]], [[VAL]] 34; GCN: buffer_store_dword [[RESULT]], 35; GCN: s_endpgm 36; EG: MEM_RAT_CACHELESS STORE_RAW [[RESULT:T[0-9]+\.[XYZW]]] 37; EG: FFBH_UINT {{\*? *}}[[RESULT]] 38define void @v_ctlz_zero_undef_i32(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind { 39 %val = load i32, i32 addrspace(1)* %valptr, align 4 40 %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone 41 store i32 %ctlz, i32 addrspace(1)* %out, align 4 42 ret void 43} 44 45; FUNC-LABEL: {{^}}v_ctlz_zero_undef_v2i32: 46; GCN: buffer_load_dwordx2 47; GCN: v_ffbh_u32_e32 48; GCN: v_ffbh_u32_e32 49; GCN: buffer_store_dwordx2 50; GCN: s_endpgm 51; EG: MEM_RAT_CACHELESS STORE_RAW [[RESULT:T[0-9]+]]{{\.[XYZW]}} 52; EG: FFBH_UINT {{\*? *}}[[RESULT]] 53; EG: FFBH_UINT {{\*? *}}[[RESULT]] 54define void @v_ctlz_zero_undef_v2i32(<2 x i32> addrspace(1)* noalias %out, <2 x i32> addrspace(1)* noalias %valptr) nounwind { 55 %val = load <2 x i32>, <2 x i32> addrspace(1)* %valptr, align 8 56 %ctlz = call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %val, i1 true) nounwind readnone 57 store <2 x i32> %ctlz, <2 x i32> addrspace(1)* %out, align 8 58 ret void 59} 60 61; FUNC-LABEL: {{^}}v_ctlz_zero_undef_v4i32: 62; GCN: buffer_load_dwordx4 63; GCN: v_ffbh_u32_e32 64; GCN: v_ffbh_u32_e32 65; GCN: v_ffbh_u32_e32 66; GCN: v_ffbh_u32_e32 67; GCN: buffer_store_dwordx4 68; GCN: s_endpgm 69; EG: MEM_RAT_CACHELESS STORE_RAW [[RESULT:T[0-9]+]]{{\.[XYZW]}} 70; EG: FFBH_UINT {{\*? *}}[[RESULT]] 71; EG: FFBH_UINT {{\*? *}}[[RESULT]] 72; EG: FFBH_UINT {{\*? *}}[[RESULT]] 73; EG: FFBH_UINT {{\*? *}}[[RESULT]] 74define void @v_ctlz_zero_undef_v4i32(<4 x i32> addrspace(1)* noalias %out, <4 x i32> addrspace(1)* noalias %valptr) nounwind { 75 %val = load <4 x i32>, <4 x i32> addrspace(1)* %valptr, align 16 76 %ctlz = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %val, i1 true) nounwind readnone 77 store <4 x i32> %ctlz, <4 x i32> addrspace(1)* %out, align 16 78 ret void 79} 80 81; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i8: 82; GCN: buffer_load_ubyte [[VAL:v[0-9]+]], 83; GCN: v_ffbh_u32_e32 [[RESULT:v[0-9]+]], [[VAL]] 84; GCN: buffer_store_byte [[RESULT]], 85define void @v_ctlz_zero_undef_i8(i8 addrspace(1)* noalias %out, i8 addrspace(1)* noalias %valptr) nounwind { 86 %val = load i8, i8 addrspace(1)* %valptr 87 %ctlz = call i8 @llvm.ctlz.i8(i8 %val, i1 true) nounwind readnone 88 store i8 %ctlz, i8 addrspace(1)* %out 89 ret void 90} 91 92; FUNC-LABEL: {{^}}s_ctlz_zero_undef_i64: 93; GCN: s_load_dwordx2 s{{\[}}[[LO:[0-9]+]]:[[HI:[0-9]+]]{{\]}}, s{{\[[0-9]+:[0-9]+\]}}, {{0xb|0x2c}} 94; GCN-DAG: v_cmp_eq_u32_e64 vcc, s[[HI]], 0{{$}} 95; GCN-DAG: s_flbit_i32_b32 [[FFBH_LO:s[0-9]+]], s[[LO]] 96; GCN-DAG: s_add_i32 [[ADD:s[0-9]+]], [[FFBH_LO]], 32 97; GCN-DAG: s_flbit_i32_b32 [[FFBH_HI:s[0-9]+]], s[[HI]] 98; GCN-DAG: v_mov_b32_e32 [[VFFBH_LO:v[0-9]+]], [[FFBH_LO]] 99; GCN-DAG: v_mov_b32_e32 [[VFFBH_HI:v[0-9]+]], [[FFBH_HI]] 100; GCN-DAG: v_cndmask_b32_e32 v[[CTLZ:[0-9]+]], [[VFFBH_HI]], [[VFFBH_LO]] 101; GCN-DAG: v_mov_b32_e32 v[[CTLZ_HI:[0-9]+]], 0{{$}} 102; GCN: {{buffer|flat}}_store_dwordx2 v{{\[}}[[CTLZ]]:[[CTLZ_HI]]{{\]}} 103define void @s_ctlz_zero_undef_i64(i64 addrspace(1)* noalias %out, i64 %val) nounwind { 104 %ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true) 105 store i64 %ctlz, i64 addrspace(1)* %out 106 ret void 107} 108 109; FUNC-LABEL: {{^}}s_ctlz_zero_undef_i64_trunc: 110define void @s_ctlz_zero_undef_i64_trunc(i32 addrspace(1)* noalias %out, i64 %val) nounwind { 111 %ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true) 112 %trunc = trunc i64 %ctlz to i32 113 store i32 %trunc, i32 addrspace(1)* %out 114 ret void 115} 116 117; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i64: 118; GCN-DAG: {{buffer|flat}}_load_dwordx2 v{{\[}}[[LO:[0-9]+]]:[[HI:[0-9]+]]{{\]}} 119; GCN-DAG: v_cmp_eq_u32_e64 [[CMPHI:s\[[0-9]+:[0-9]+\]]], 0, v[[HI]] 120; GCN-DAG: v_ffbh_u32_e32 [[FFBH_LO:v[0-9]+]], v[[LO]] 121; GCN-DAG: v_add_i32_e32 [[ADD:v[0-9]+]], vcc, 32, [[FFBH_LO]] 122; GCN-DAG: v_ffbh_u32_e32 [[FFBH_HI:v[0-9]+]], v[[HI]] 123; GCN-DAG: v_cndmask_b32_e64 v[[CTLZ:[0-9]+]], [[FFBH_HI]], [[FFBH_LO]] 124; GCN-DAG: v_mov_b32_e32 v[[CTLZ_HI:[0-9]+]], 0{{$}} 125; GCN: {{buffer|flat}}_store_dwordx2 {{.*}}v{{\[}}[[CTLZ]]:[[CTLZ_HI]]{{\]}} 126define void @v_ctlz_zero_undef_i64(i64 addrspace(1)* noalias %out, i64 addrspace(1)* noalias %in) nounwind { 127 %tid = call i32 @llvm.r600.read.tidig.x() 128 %in.gep = getelementptr i64, i64 addrspace(1)* %in, i32 %tid 129 %out.gep = getelementptr i64, i64 addrspace(1)* %out, i32 %tid 130 %val = load i64, i64 addrspace(1)* %in.gep 131 %ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true) 132 store i64 %ctlz, i64 addrspace(1)* %out.gep 133 ret void 134} 135 136; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i64_trunc: 137define void @v_ctlz_zero_undef_i64_trunc(i32 addrspace(1)* noalias %out, i64 addrspace(1)* noalias %in) nounwind { 138 %tid = call i32 @llvm.r600.read.tidig.x() 139 %in.gep = getelementptr i64, i64 addrspace(1)* %in, i32 %tid 140 %out.gep = getelementptr i32, i32 addrspace(1)* %out, i32 %tid 141 %val = load i64, i64 addrspace(1)* %in.gep 142 %ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true) 143 %trunc = trunc i64 %ctlz to i32 144 store i32 %trunc, i32 addrspace(1)* %out.gep 145 ret void 146} 147 148; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_eq_neg1: 149; GCN: buffer_load_dword [[VAL:v[0-9]+]], 150; GCN: v_ffbh_u32_e32 [[RESULT:v[0-9]+]], [[VAL]] 151; GCN: buffer_store_dword [[RESULT]], 152 define void @v_ctlz_zero_undef_i32_sel_eq_neg1(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind { 153 %val = load i32, i32 addrspace(1)* %valptr 154 %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone 155 %cmp = icmp eq i32 %val, 0 156 %sel = select i1 %cmp, i32 -1, i32 %ctlz 157 store i32 %sel, i32 addrspace(1)* %out 158 ret void 159} 160 161; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_ne_neg1: 162; GCN: buffer_load_dword [[VAL:v[0-9]+]], 163; GCN: v_ffbh_u32_e32 [[RESULT:v[0-9]+]], [[VAL]] 164; GCN: buffer_store_dword [[RESULT]], 165define void @v_ctlz_zero_undef_i32_sel_ne_neg1(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind { 166 %val = load i32, i32 addrspace(1)* %valptr 167 %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone 168 %cmp = icmp ne i32 %val, 0 169 %sel = select i1 %cmp, i32 %ctlz, i32 -1 170 store i32 %sel, i32 addrspace(1)* %out 171 ret void 172} 173 174; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i8_sel_eq_neg1: 175; GCN: {{buffer|flat}}_load_ubyte [[VAL:v[0-9]+]], 176; GCN: v_ffbh_u32_e32 [[FFBH:v[0-9]+]], [[VAL]] 177; GCN: {{buffer|flat}}_store_byte [[FFBH]], 178define void @v_ctlz_zero_undef_i8_sel_eq_neg1(i8 addrspace(1)* noalias %out, i8 addrspace(1)* noalias %valptr) nounwind { 179 %tid = call i32 @llvm.r600.read.tidig.x() 180 %valptr.gep = getelementptr i8, i8 addrspace(1)* %valptr, i32 %tid 181 %val = load i8, i8 addrspace(1)* %valptr.gep 182 %ctlz = call i8 @llvm.ctlz.i8(i8 %val, i1 true) nounwind readnone 183 %cmp = icmp eq i8 %val, 0 184 %sel = select i1 %cmp, i8 -1, i8 %ctlz 185 store i8 %sel, i8 addrspace(1)* %out 186 ret void 187} 188 189; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_eq_neg1_two_use: 190; GCN: buffer_load_dword [[VAL:v[0-9]+]], 191; GCN-DAG: v_ffbh_u32_e32 [[RESULT0:v[0-9]+]], [[VAL]] 192; GCN-DAG: v_cmp_eq_u32_e32 vcc, 0, [[VAL]] 193; GCN-DAG: v_cndmask_b32_e64 [[RESULT1:v[0-9]+]], 0, 1, vcc 194; GCN-DAG: buffer_store_dword [[RESULT0]] 195; GCN-DAG: buffer_store_byte [[RESULT1]] 196; GCN: s_endpgm 197 define void @v_ctlz_zero_undef_i32_sel_eq_neg1_two_use(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind { 198 %val = load i32, i32 addrspace(1)* %valptr 199 %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone 200 %cmp = icmp eq i32 %val, 0 201 %sel = select i1 %cmp, i32 -1, i32 %ctlz 202 store volatile i32 %sel, i32 addrspace(1)* %out 203 store volatile i1 %cmp, i1 addrspace(1)* undef 204 ret void 205} 206 207; Selected on wrong constant 208; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_eq_0: 209; GCN: buffer_load_dword 210; GCN: v_ffbh_u32_e32 211; GCN: v_cmp 212; GCN: v_cndmask 213; GCN: buffer_store_dword 214 define void @v_ctlz_zero_undef_i32_sel_eq_0(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind { 215 %val = load i32, i32 addrspace(1)* %valptr 216 %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone 217 %cmp = icmp eq i32 %val, 0 218 %sel = select i1 %cmp, i32 0, i32 %ctlz 219 store i32 %sel, i32 addrspace(1)* %out 220 ret void 221} 222 223; Selected on wrong constant 224; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_ne_0: 225; GCN: buffer_load_dword 226; GCN: v_ffbh_u32_e32 227; GCN: v_cmp 228; GCN: v_cndmask 229; GCN: buffer_store_dword 230define void @v_ctlz_zero_undef_i32_sel_ne_0(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind { 231 %val = load i32, i32 addrspace(1)* %valptr 232 %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone 233 %cmp = icmp ne i32 %val, 0 234 %sel = select i1 %cmp, i32 %ctlz, i32 0 235 store i32 %sel, i32 addrspace(1)* %out 236 ret void 237} 238 239; Compare on wrong constant 240; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_eq_cmp_non0: 241; GCN: buffer_load_dword 242; GCN: v_ffbh_u32_e32 243; GCN: v_cmp 244; GCN: v_cndmask 245; GCN: buffer_store_dword 246 define void @v_ctlz_zero_undef_i32_sel_eq_cmp_non0(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind { 247 %val = load i32, i32 addrspace(1)* %valptr 248 %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone 249 %cmp = icmp eq i32 %val, 1 250 %sel = select i1 %cmp, i32 0, i32 %ctlz 251 store i32 %sel, i32 addrspace(1)* %out 252 ret void 253} 254 255; Selected on wrong constant 256; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_ne_cmp_non0: 257; GCN: buffer_load_dword 258; GCN: v_ffbh_u32_e32 259; GCN: v_cmp 260; GCN: v_cndmask 261; GCN: buffer_store_dword 262define void @v_ctlz_zero_undef_i32_sel_ne_cmp_non0(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind { 263 %val = load i32, i32 addrspace(1)* %valptr 264 %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone 265 %cmp = icmp ne i32 %val, 1 266 %sel = select i1 %cmp, i32 %ctlz, i32 0 267 store i32 %sel, i32 addrspace(1)* %out 268 ret void 269} 270