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1 /* { dg-do run } */
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2 /* { dg-options "-O2 -mcx16" { target { { i?86-*-* x86_64-*-* } && lp64 } } } */
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3
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4 #ifdef __x86_64__
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5 #include "cpuid.h"
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6 #endif
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7
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8 double d = 1.5;
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9 long double ld = 3;
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10 extern void abort (void);
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11
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12 void
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13 test (void)
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14 {
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15 #pragma omp atomic
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16 d *= 1.25;
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17 #pragma omp atomic
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18 ld /= 0.75;
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19 if (d != 1.875 || ld != 4.0L)
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20 abort ();
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21 }
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22
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23 int
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24 main (void)
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25 {
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26 #ifdef __x86_64__
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27 unsigned int eax, ebx, ecx, edx;
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28
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29 if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
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30 return 0;
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31
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32 if (!(ecx & bit_CMPXCHG16B))
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33 return 0;
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34 #endif
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35 test ();
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36 return 0;
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37 }
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