1 ; RUN: llc < %s -O0 -march=x86-64 -mcpu=corei7 -verify-machineinstrs | FileCheck %s --check-prefix X64 2 ; RUN: llc < %s -O0 -march=x86 -mcpu=corei7 -verify-machineinstrs | FileCheck %s --check-prefix X32 3 4 @sc8 = external global i8 5 6 define void @atomic_fetch_add8() nounwind { 7 ; X64-LABEL: atomic_fetch_add8: 8 ; X32-LABEL: atomic_fetch_add8: 9 entry: 10 ; 32-bit 11 %t1 = atomicrmw add i8* @sc8, i8 1 acquire 12 ; X64: lock 13 ; X64: incb 14 ; X32: lock 15 ; X32: incb 16 %t2 = atomicrmw add i8* @sc8, i8 3 acquire 17 ; X64: lock 18 ; X64: addb $3 19 ; X32: lock 20 ; X32: addb $3 21 %t3 = atomicrmw add i8* @sc8, i8 5 acquire 22 ; X64: lock 23 ; X64: xaddb 24 ; X32: lock 25 ; X32: xaddb 26 %t4 = atomicrmw add i8* @sc8, i8 %t3 acquire 27 ; X64: lock 28 ; X64: addb 29 ; X32: lock 30 ; X32: addb 31 ret void 32 ; X64: ret 33 ; X32: ret 34 } 35 36 define void @atomic_fetch_sub8() nounwind { 37 ; X64-LABEL: atomic_fetch_sub8: 38 ; X32-LABEL: atomic_fetch_sub8: 39 %t1 = atomicrmw sub i8* @sc8, i8 1 acquire 40 ; X64: lock 41 ; X64: decb 42 ; X32: lock 43 ; X32: decb 44 %t2 = atomicrmw sub i8* @sc8, i8 3 acquire 45 ; X64: lock 46 ; X64: subb $3 47 ; X32: lock 48 ; X32: subb $3 49 %t3 = atomicrmw sub i8* @sc8, i8 5 acquire 50 ; X64: lock 51 ; X64: xaddb 52 ; X32: lock 53 ; X32: xaddb 54 %t4 = atomicrmw sub i8* @sc8, i8 %t3 acquire 55 ; X64: lock 56 ; X64: subb 57 ; X32: lock 58 ; X32: subb 59 ret void 60 ; X64: ret 61 ; X32: ret 62 } 63 64 define void @atomic_fetch_and8() nounwind { 65 ; X64-LABEL: atomic_fetch_and8: 66 ; X32-LABEL: atomic_fetch_and8: 67 %t1 = atomicrmw and i8* @sc8, i8 3 acquire 68 ; X64: lock 69 ; X64: andb $3 70 ; X32: lock 71 ; X32: andb $3 72 %t2 = atomicrmw and i8* @sc8, i8 5 acquire 73 ; X64: andb 74 ; X64: lock 75 ; X64: cmpxchgb 76 ; X32: andb 77 ; X32: lock 78 ; X32: cmpxchgb 79 %t3 = atomicrmw and i8* @sc8, i8 %t2 acquire 80 ; X64: lock 81 ; X64: andb 82 ; X32: lock 83 ; X32: andb 84 ret void 85 ; X64: ret 86 ; X32: ret 87 } 88 89 define void @atomic_fetch_or8() nounwind { 90 ; X64-LABEL: atomic_fetch_or8: 91 ; X32-LABEL: atomic_fetch_or8: 92 %t1 = atomicrmw or i8* @sc8, i8 3 acquire 93 ; X64: lock 94 ; X64: orb $3 95 ; X32: lock 96 ; X32: orb $3 97 %t2 = atomicrmw or i8* @sc8, i8 5 acquire 98 ; X64: orb 99 ; X64: lock 100 ; X64: cmpxchgb 101 ; X32: orb 102 ; X32: lock 103 ; X32: cmpxchgb 104 %t3 = atomicrmw or i8* @sc8, i8 %t2 acquire 105 ; X64: lock 106 ; X64: orb 107 ; X32: lock 108 ; X32: orb 109 ret void 110 ; X64: ret 111 ; X32: ret 112 } 113 114 define void @atomic_fetch_xor8() nounwind { 115 ; X64-LABEL: atomic_fetch_xor8: 116 ; X32-LABEL: atomic_fetch_xor8: 117 %t1 = atomicrmw xor i8* @sc8, i8 3 acquire 118 ; X64: lock 119 ; X64: xorb $3 120 ; X32: lock 121 ; X32: xorb $3 122 %t2 = atomicrmw xor i8* @sc8, i8 5 acquire 123 ; X64: xorb 124 ; X64: lock 125 ; X64: cmpxchgb 126 ; X32: xorb 127 ; X32: lock 128 ; X32: cmpxchgb 129 %t3 = atomicrmw xor i8* @sc8, i8 %t2 acquire 130 ; X64: lock 131 ; X64: xorb 132 ; X32: lock 133 ; X32: xorb 134 ret void 135 ; X64: ret 136 ; X32: ret 137 } 138 139 define void @atomic_fetch_nand8(i8 %x) nounwind { 140 ; X64-LABEL: atomic_fetch_nand8: 141 ; X32-LABEL: atomic_fetch_nand8: 142 %t1 = atomicrmw nand i8* @sc8, i8 %x acquire 143 ; X64: andb 144 ; X64: notb 145 ; X64: lock 146 ; X64: cmpxchgb 147 ; X32: andb 148 ; X32: notb 149 ; X32: lock 150 ; X32: cmpxchgb 151 ret void 152 ; X64: ret 153 ; X32: ret 154 } 155 156 define void @atomic_fetch_max8(i8 %x) nounwind { 157 ; X64-LABEL: atomic_fetch_max8: 158 ; X32-LABEL: atomic_fetch_max8: 159 %t1 = atomicrmw max i8* @sc8, i8 %x acquire 160 ; X64: movsbl 161 ; X64: movsbl 162 ; X64: subl 163 ; X64: lock 164 ; X64: cmpxchgb 165 166 ; X32: movsbl 167 ; X32: movsbl 168 ; X32: subl 169 ; X32: lock 170 ; X32: cmpxchgb 171 ret void 172 ; X64: ret 173 ; X32: ret 174 } 175 176 define void @atomic_fetch_min8(i8 %x) nounwind { 177 ; X64-LABEL: atomic_fetch_min8: 178 ; X32-LABEL: atomic_fetch_min8: 179 %t1 = atomicrmw min i8* @sc8, i8 %x acquire 180 ; X64: movsbl 181 ; X64: movsbl 182 ; X64: subl 183 ; X64: lock 184 ; X64: cmpxchgb 185 186 ; X32: movsbl 187 ; X32: movsbl 188 ; X32: subl 189 ; X32: lock 190 ; X32: cmpxchgb 191 ret void 192 ; X64: ret 193 ; X32: ret 194 } 195 196 define void @atomic_fetch_umax8(i8 %x) nounwind { 197 ; X64-LABEL: atomic_fetch_umax8: 198 ; X32-LABEL: atomic_fetch_umax8: 199 %t1 = atomicrmw umax i8* @sc8, i8 %x acquire 200 ; X64: movzbl 201 ; X64: movzbl 202 ; X64: subl 203 ; X64: lock 204 ; X64: cmpxchgb 205 206 ; X32: movzbl 207 ; X32: movzbl 208 ; X32: subl 209 ; X32: lock 210 ; X32: cmpxchgb 211 ret void 212 ; X64: ret 213 ; X32: ret 214 } 215 216 define void @atomic_fetch_umin8(i8 %x) nounwind { 217 ; X64-LABEL: atomic_fetch_umin8: 218 ; X32-LABEL: atomic_fetch_umin8: 219 %t1 = atomicrmw umin i8* @sc8, i8 %x acquire 220 ; X64: movzbl 221 ; X64: movzbl 222 ; X64: subl 223 ; X64: lock 224 ; X64: cmpxchgb 225 226 ; X32: movzbl 227 ; X32: movzbl 228 ; X32: subl 229 ; X32: lock 230 ; X32: cmpxchgb 231 ret void 232 ; X64: ret 233 ; X32: ret 234 } 235 236 define void @atomic_fetch_cmpxchg8() nounwind { 237 ; X64-LABEL: atomic_fetch_cmpxchg8: 238 ; X32-LABEL: atomic_fetch_cmpxchg8: 239 %t1 = cmpxchg i8* @sc8, i8 0, i8 1 acquire acquire 240 ; X64: lock 241 ; X64: cmpxchgb 242 ; X32: lock 243 ; X32: cmpxchgb 244 ret void 245 ; X64: ret 246 ; X32: ret 247 } 248 249 define void @atomic_fetch_store8(i8 %x) nounwind { 250 ; X64-LABEL: atomic_fetch_store8: 251 ; X32-LABEL: atomic_fetch_store8: 252 store atomic i8 %x, i8* @sc8 release, align 4 253 ; X64-NOT: lock 254 ; X64: movb 255 ; X32-NOT: lock 256 ; X32: movb 257 ret void 258 ; X64: ret 259 ; X32: ret 260 } 261 262 define void @atomic_fetch_swap8(i8 %x) nounwind { 263 ; X64-LABEL: atomic_fetch_swap8: 264 ; X32-LABEL: atomic_fetch_swap8: 265 %t1 = atomicrmw xchg i8* @sc8, i8 %x acquire 266 ; X64-NOT: lock 267 ; X64: xchgb 268 ; X32-NOT: lock 269 ; X32: xchgb 270 ret void 271 ; X64: ret 272 ; X32: ret 273 } 274
