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42 lines
655 B
C
42 lines
655 B
C
/* PR middle-end/36106 */
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/* { dg-options "-O2" } */
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/* { dg-options "-O2 -mcx16" { target { { i?86-*-* x86_64-*-* } && lp64 } } } */
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#ifdef __x86_64__
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# include "cpuid.h"
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#endif
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extern void abort (void);
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int __attribute__((noinline))
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do_test (void)
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{
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long double d = .0L;
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int i;
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#pragma omp parallel for shared (d)
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for (i = 0; i < 10; i++)
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#pragma omp atomic
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d += 1.0L;
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if (d != 10.0L)
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abort ();
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return 0;
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}
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int
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main (void)
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{
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#ifdef __x86_64__
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unsigned int eax, ebx, ecx, edx;
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if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
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return 0;
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if (!(ecx & bit_CMPXCHG16B))
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return 0;
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#endif
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do_test ();
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return 0;
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}
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