1 ; RUN: llc < %s -O0 -mtriple=x86_64-unknown-unknown -mcpu=corei7 -verify-machineinstrs -show-mc-encoding | FileCheck %s --check-prefix X64 2 ; RUN: llc < %s -O0 -mtriple=i386-unknown-unknown -mcpu=corei7 -verify-machineinstrs | FileCheck %s --check-prefix X32 3 4 @sc16 = external global i16 5 6 define void @atomic_fetch_add16() nounwind { 7 ; X64: atomic_fetch_add16 8 ; X32: atomic_fetch_add16 9 entry: 10 ; 32-bit 11 %t1 = atomicrmw add i16* @sc16, i16 1 acquire 12 ; X64: lock 13 ; X64: incw 14 ; X32: lock 15 ; X32: incw 16 %t2 = atomicrmw add i16* @sc16, i16 3 acquire 17 ; X64: lock 18 ; X64: addw $3, {{.*}} # encoding: [0xf0,0x66 19 ; X32: lock 20 ; X32: addw $3 21 %t3 = atomicrmw add i16* @sc16, i16 5 acquire 22 ; X64: lock 23 ; X64: xaddw {{.*}} # encoding: [0xf0,0x66 24 ; X32: lock 25 ; X32: xaddw 26 %t4 = atomicrmw add i16* @sc16, i16 %t3 acquire 27 ; X64: lock 28 ; X64: addw {{.*}} # encoding: [0xf0,0x66 29 ; X32: lock 30 ; X32: addw 31 ret void 32 ; X64: ret 33 ; X32: ret 34 } 35 36 define void @atomic_fetch_sub16() nounwind { 37 ; X64: atomic_fetch_sub16 38 ; X32: atomic_fetch_sub16 39 %t1 = atomicrmw sub i16* @sc16, i16 1 acquire 40 ; X64: lock 41 ; X64: decw 42 ; X32: lock 43 ; X32: decw 44 %t2 = atomicrmw sub i16* @sc16, i16 3 acquire 45 ; X64: lock 46 ; X64: subw $3, {{.*}} # encoding: [0xf0,0x66 47 ; X32: lock 48 ; X32: subw $3 49 %t3 = atomicrmw sub i16* @sc16, i16 5 acquire 50 ; X64: lock 51 ; X64: xaddw {{.*}} # encoding: [0xf0,0x66 52 ; X32: lock 53 ; X32: xaddw 54 %t4 = atomicrmw sub i16* @sc16, i16 %t3 acquire 55 ; X64: lock 56 ; X64: subw {{.*}} # encoding: [0xf0,0x66 57 ; X32: lock 58 ; X32: subw 59 ret void 60 ; X64: ret 61 ; X32: ret 62 } 63 64 define void @atomic_fetch_and16() nounwind { 65 ; X64: atomic_fetch_and16 66 ; X32: atomic_fetch_and16 67 %t1 = atomicrmw and i16* @sc16, i16 3 acquire 68 ; X64: lock 69 ; X64: andw $3, {{.*}} # encoding: [0xf0,0x66 70 ; X32: lock 71 ; X32: andw $3 72 %t2 = atomicrmw and i16* @sc16, i16 5 acquire 73 ; X64: andw 74 ; X64: lock 75 ; X64: cmpxchgw 76 ; X32: andw 77 ; X32: lock 78 ; X32: cmpxchgw 79 %t3 = atomicrmw and i16* @sc16, i16 %t2 acquire 80 ; X64: lock 81 ; X64: andw {{.*}} # encoding: [0xf0,0x66 82 ; X32: lock 83 ; X32: andw 84 ret void 85 ; X64: ret 86 ; X32: ret 87 } 88 89 define void @atomic_fetch_or16() nounwind { 90 ; X64: atomic_fetch_or16 91 ; X32: atomic_fetch_or16 92 %t1 = atomicrmw or i16* @sc16, i16 3 acquire 93 ; X64: lock 94 ; X64: orw $3, {{.*}} # encoding: [0xf0,0x66 95 ; X32: lock 96 ; X32: orw $3 97 %t2 = atomicrmw or i16* @sc16, i16 5 acquire 98 ; X64: orw 99 ; X64: lock 100 ; X64: cmpxchgw 101 ; X32: orw 102 ; X32: lock 103 ; X32: cmpxchgw 104 %t3 = atomicrmw or i16* @sc16, i16 %t2 acquire 105 ; X64: lock 106 ; X64: orw {{.*}} # encoding: [0xf0,0x66 107 ; X32: lock 108 ; X32: orw 109 ret void 110 ; X64: ret 111 ; X32: ret 112 } 113 114 define void @atomic_fetch_xor16() nounwind { 115 ; X64: atomic_fetch_xor16 116 ; X32: atomic_fetch_xor16 117 %t1 = atomicrmw xor i16* @sc16, i16 3 acquire 118 ; X64: lock 119 ; X64: xorw $3, {{.*}} # encoding: [0xf0,0x66 120 ; X32: lock 121 ; X32: xorw $3 122 %t2 = atomicrmw xor i16* @sc16, i16 5 acquire 123 ; X64: xorw 124 ; X64: lock 125 ; X64: cmpxchgw 126 ; X32: xorw 127 ; X32: lock 128 ; X32: cmpxchgw 129 %t3 = atomicrmw xor i16* @sc16, i16 %t2 acquire 130 ; X64: lock 131 ; X64: xorw {{.*}} # encoding: [0xf0,0x66 132 ; X32: lock 133 ; X32: xorw 134 ret void 135 ; X64: ret 136 ; X32: ret 137 } 138 139 define void @atomic_fetch_nand16(i16 %x) nounwind { 140 ; X64: atomic_fetch_nand16 141 ; X32: atomic_fetch_nand16 142 %t1 = atomicrmw nand i16* @sc16, i16 %x acquire 143 ; X64: andw 144 ; X64: notw 145 ; X64: lock 146 ; X64: cmpxchgw 147 ; X32: andw 148 ; X32: notw 149 ; X32: lock 150 ; X32: cmpxchgw 151 ret void 152 ; X64: ret 153 ; X32: ret 154 } 155 156 define void @atomic_fetch_max16(i16 %x) nounwind { 157 %t1 = atomicrmw max i16* @sc16, i16 %x acquire 158 ; X64: cmpw 159 ; X64: cmov 160 ; X64: lock 161 ; X64: cmpxchgw 162 163 ; X32: cmpw 164 ; X32: cmov 165 ; X32: lock 166 ; X32: cmpxchgw 167 ret void 168 ; X64: ret 169 ; X32: ret 170 } 171 172 define void @atomic_fetch_min16(i16 %x) nounwind { 173 %t1 = atomicrmw min i16* @sc16, i16 %x acquire 174 ; X64: cmpw 175 ; X64: cmov 176 ; X64: lock 177 ; X64: cmpxchgw 178 179 ; X32: cmpw 180 ; X32: cmov 181 ; X32: lock 182 ; X32: cmpxchgw 183 ret void 184 ; X64: ret 185 ; X32: ret 186 } 187 188 define void @atomic_fetch_umax16(i16 %x) nounwind { 189 %t1 = atomicrmw umax i16* @sc16, i16 %x acquire 190 ; X64: cmpw 191 ; X64: cmov 192 ; X64: lock 193 ; X64: cmpxchgw 194 195 ; X32: cmpw 196 ; X32: cmov 197 ; X32: lock 198 ; X32: cmpxchgw 199 ret void 200 ; X64: ret 201 ; X32: ret 202 } 203 204 define void @atomic_fetch_umin16(i16 %x) nounwind { 205 %t1 = atomicrmw umin i16* @sc16, i16 %x acquire 206 ; X64: cmpw 207 ; X64: cmov 208 ; X64: lock 209 ; X64: cmpxchgw 210 ; X32: cmpw 211 ; X32: cmov 212 ; X32: lock 213 ; X32: cmpxchgw 214 ret void 215 ; X64: ret 216 ; X32: ret 217 } 218 219 define void @atomic_fetch_cmpxchg16() nounwind { 220 %t1 = cmpxchg i16* @sc16, i16 0, i16 1 acquire 221 ; X64: lock 222 ; X64: cmpxchgw 223 ; X32: lock 224 ; X32: cmpxchgw 225 ret void 226 ; X64: ret 227 ; X32: ret 228 } 229 230 define void @atomic_fetch_store16(i16 %x) nounwind { 231 store atomic i16 %x, i16* @sc16 release, align 4 232 ; X64-NOT: lock 233 ; X64: movw 234 ; X32-NOT: lock 235 ; X32: movw 236 ret void 237 ; X64: ret 238 ; X32: ret 239 } 240 241 define void @atomic_fetch_swap16(i16 %x) nounwind { 242 %t1 = atomicrmw xchg i16* @sc16, i16 %x acquire 243 ; X64-NOT: lock 244 ; X64: xchgw 245 ; X32-NOT: lock 246 ; X32: xchgw 247 ret void 248 ; X64: ret 249 ; X32: ret 250 } 251
