test/CodeGen/X86/atomic16.ll

   1 ; RUN: llc < %s -O0 -march=x86-64 -mcpu=corei7 | FileCheck %s --check-prefix X64
   2 ; RUN: llc < %s -O0 -march=x86 -mcpu=corei7 | FileCheck %s --check-prefix X32
   3 ; RUN: llc < %s -O0 -mtriple=x86_64-linux-unknonw-unknown -mcpu=corei7 -show-mc-encoding | grep xaddw | grep 0x66
   4 ; RUN: llc < %s -O0 -mtriple=x86_64-linux-unknonw-unknown -mcpu=corei7 -show-mc-encoding | grep addw | grep 0x66
   5 ; RUN: llc < %s -O0 -mtriple=x86_64-linux-unknonw-unknown -mcpu=corei7 -show-mc-encoding | grep subw | grep 0x66
   6 ; RUN: llc < %s -O0 -mtriple=x86_64-linux-unknonw-unknown -mcpu=corei7 -show-mc-encoding | grep xorw | grep 0x66
   7 ; RUN: llc < %s -O0 -mtriple=x86_64-linux-unknonw-unknown -mcpu=corei7 -show-mc-encoding | grep orw | grep 0x66
   8 ; RUN: llc < %s -O0 -mtriple=x86_64-linux-unknonw-unknown -mcpu=corei7 -show-mc-encoding | grep andw | grep 0x66
   9
  10 @sc16 = external global i16
  11
  12 define void @atomic_fetch_add16() nounwind {
  13 ; X64:   atomic_fetch_add16
  14 ; X32:   atomic_fetch_add16
  15 entry:
  16 ; 32-bit
  17   %t1 = atomicrmw add  i16* @sc16, i16 1 acquire
  18 ; X64:       lock
  19 ; X64:       incw
  20 ; X32:       lock
  21 ; X32:       incw
  22   %t2 = atomicrmw add  i16* @sc16, i16 3 acquire
  23 ; X64:       lock
  24 ; X64:       addw $3
  25 ; X32:       lock
  26 ; X32:       addw $3
  27   %t3 = atomicrmw add  i16* @sc16, i16 5 acquire
  28 ; X64:       lock
  29 ; X64:       xaddw
  30 ; X32:       lock
  31 ; X32:       xaddw
  32   %t4 = atomicrmw add  i16* @sc16, i16 %t3 acquire
  33 ; X64:       lock
  34 ; X64:       addw
  35 ; X32:       lock
  36 ; X32:       addw
  37   ret void
  38 ; X64:       ret
  39 ; X32:       ret
  40 }
  41
  42 define void @atomic_fetch_sub16() nounwind {
  43 ; X64:   atomic_fetch_sub16
  44 ; X32:   atomic_fetch_sub16
  45   %t1 = atomicrmw sub  i16* @sc16, i16 1 acquire
  46 ; X64:       lock
  47 ; X64:       decw
  48 ; X32:       lock
  49 ; X32:       decw
  50   %t2 = atomicrmw sub  i16* @sc16, i16 3 acquire
  51 ; X64:       lock
  52 ; X64:       subw $3
  53 ; X32:       lock
  54 ; X32:       subw $3
  55   %t3 = atomicrmw sub  i16* @sc16, i16 5 acquire
  56 ; X64:       lock
  57 ; X64:       xaddw
  58 ; X32:       lock
  59 ; X32:       xaddw
  60   %t4 = atomicrmw sub  i16* @sc16, i16 %t3 acquire
  61 ; X64:       lock
  62 ; X64:       subw
  63 ; X32:       lock
  64 ; X32:       subw
  65   ret void
  66 ; X64:       ret
  67 ; X32:       ret
  68 }
  69
  70 define void @atomic_fetch_and16() nounwind {
  71 ; X64:   atomic_fetch_and16
  72 ; X32:   atomic_fetch_and16
  73   %t1 = atomicrmw and  i16* @sc16, i16 3 acquire
  74 ; X64:       lock
  75 ; X64:       andw $3
  76 ; X32:       lock
  77 ; X32:       andw $3
  78   %t2 = atomicrmw and  i16* @sc16, i16 5 acquire
  79 ; X64:       andw
  80 ; X64:       lock
  81 ; X64:       cmpxchgw
  82 ; X32:       andw
  83 ; X32:       lock
  84 ; X32:       cmpxchgw
  85   %t3 = atomicrmw and  i16* @sc16, i16 %t2 acquire
  86 ; X64:       lock
  87 ; X64:       andw
  88 ; X32:       lock
  89 ; X32:       andw
  90   ret void
  91 ; X64:       ret
  92 ; X32:       ret
  93 }
  94
  95 define void @atomic_fetch_or16() nounwind {
  96 ; X64:   atomic_fetch_or16
  97 ; X32:   atomic_fetch_or16
  98   %t1 = atomicrmw or   i16* @sc16, i16 3 acquire
  99 ; X64:       lock
 100 ; X64:       orw $3
 101 ; X32:       lock
 102 ; X32:       orw $3
 103   %t2 = atomicrmw or   i16* @sc16, i16 5 acquire
 104 ; X64:       orw
 105 ; X64:       lock
 106 ; X64:       cmpxchgw
 107 ; X32:       orw
 108 ; X32:       lock
 109 ; X32:       cmpxchgw
 110   %t3 = atomicrmw or   i16* @sc16, i16 %t2 acquire
 111 ; X64:       lock
 112 ; X64:       orw
 113 ; X32:       lock
 114 ; X32:       orw
 115   ret void
 116 ; X64:       ret
 117 ; X32:       ret
 118 }
 119
 120 define void @atomic_fetch_xor16() nounwind {
 121 ; X64:   atomic_fetch_xor16
 122 ; X32:   atomic_fetch_xor16
 123   %t1 = atomicrmw xor  i16* @sc16, i16 3 acquire
 124 ; X64:       lock
 125 ; X64:       xorw $3
 126 ; X32:       lock
 127 ; X32:       xorw $3
 128   %t2 = atomicrmw xor  i16* @sc16, i16 5 acquire
 129 ; X64:       xorw
 130 ; X64:       lock
 131 ; X64:       cmpxchgw
 132 ; X32:       xorw
 133 ; X32:       lock
 134 ; X32:       cmpxchgw
 135   %t3 = atomicrmw xor  i16* @sc16, i16 %t2 acquire
 136 ; X64:       lock
 137 ; X64:       xorw
 138 ; X32:       lock
 139 ; X32:       xorw
 140   ret void
 141 ; X64:       ret
 142 ; X32:       ret
 143 }
 144
 145 define void @atomic_fetch_nand16(i16 %x) nounwind {
 146 ; X64:   atomic_fetch_nand16
 147 ; X32:   atomic_fetch_nand16
 148   %t1 = atomicrmw nand i16* @sc16, i16 %x acquire
 149 ; X64:       andw
 150 ; X64:       notw
 151 ; X64:       lock
 152 ; X64:       cmpxchgw
 153 ; X32:       andw
 154 ; X32:       notw
 155 ; X32:       lock
 156 ; X32:       cmpxchgw
 157   ret void
 158 ; X64:       ret
 159 ; X32:       ret
 160 }
 161
 162 define void @atomic_fetch_max16(i16 %x) nounwind {
 163   %t1 = atomicrmw max  i16* @sc16, i16 %x acquire
 164 ; X64:       cmpw
 165 ; X64:       cmov
 166 ; X64:       lock
 167 ; X64:       cmpxchgw
 168
 169 ; X32:       cmpw
 170 ; X32:       cmov
 171 ; X32:       lock
 172 ; X32:       cmpxchgw
 173   ret void
 174 ; X64:       ret
 175 ; X32:       ret
 176 }
 177
 178 define void @atomic_fetch_min16(i16 %x) nounwind {
 179   %t1 = atomicrmw min  i16* @sc16, i16 %x acquire
 180 ; X64:       cmpw
 181 ; X64:       cmov
 182 ; X64:       lock
 183 ; X64:       cmpxchgw
 184
 185 ; X32:       cmpw
 186 ; X32:       cmov
 187 ; X32:       lock
 188 ; X32:       cmpxchgw
 189   ret void
 190 ; X64:       ret
 191 ; X32:       ret
 192 }
 193
 194 define void @atomic_fetch_umax16(i16 %x) nounwind {
 195   %t1 = atomicrmw umax i16* @sc16, i16 %x acquire
 196 ; X64:       cmpw
 197 ; X64:       cmov
 198 ; X64:       lock
 199 ; X64:       cmpxchgw
 200
 201 ; X32:       cmpw
 202 ; X32:       cmov
 203 ; X32:       lock
 204 ; X32:       cmpxchgw
 205   ret void
 206 ; X64:       ret
 207 ; X32:       ret
 208 }
 209
 210 define void @atomic_fetch_umin16(i16 %x) nounwind {
 211   %t1 = atomicrmw umin i16* @sc16, i16 %x acquire
 212 ; X64:       cmpw
 213 ; X64:       cmov
 214 ; X64:       lock
 215 ; X64:       cmpxchgw
 216 ; X32:       cmpw
 217 ; X32:       cmov
 218 ; X32:       lock
 219 ; X32:       cmpxchgw
 220   ret void
 221 ; X64:       ret
 222 ; X32:       ret
 223 }
 224
 225 define void @atomic_fetch_cmpxchg16() nounwind {
 226   %t1 = cmpxchg i16* @sc16, i16 0, i16 1 acquire
 227 ; X64:       lock
 228 ; X64:       cmpxchgw
 229 ; X32:       lock
 230 ; X32:       cmpxchgw
 231   ret void
 232 ; X64:       ret
 233 ; X32:       ret
 234 }
 235
 236 define void @atomic_fetch_store16(i16 %x) nounwind {
 237   store atomic i16 %x, i16* @sc16 release, align 4
 238 ; X64-NOT:   lock
 239 ; X64:       movw
 240 ; X32-NOT:   lock
 241 ; X32:       movw
 242   ret void
 243 ; X64:       ret
 244 ; X32:       ret
 245 }
 246
 247 define void @atomic_fetch_swap16(i16 %x) nounwind {
 248   %t1 = atomicrmw xchg i16* @sc16, i16 %x acquire
 249 ; X64-NOT:   lock
 250 ; X64:       xchgw
 251 ; X32-NOT:   lock
 252 ; X32:       xchgw
 253   ret void
 254 ; X64:       ret
 255 ; X32:       ret
 256 }