test/CodeGen/X86/atomic16.ll

   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 }