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annotate libgomp/testsuite/libgomp.c/atomic-6.c @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children 04ced10e8804
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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1 /* PR middle-end/36106 */
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2 /* { dg-options "-O2" } */
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3 /* { dg-options "-O2 -mieee" { target alpha*-*-* } } */
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4 /* { dg-options "-O2 -march=i586" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
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5
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6 #ifdef __i386__
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7 # include "cpuid.h"
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8 #endif
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9
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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10 extern void abort (void);
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11
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12 union { unsigned long long l; double d; } u = { .l = 0x7ff0000000072301ULL };
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13
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14 int __attribute__((noinline))
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15 do_test (void)
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16 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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17 #pragma omp atomic
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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18 u.d += 1.0L;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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19 return 0;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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20 }
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21
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22 int
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23 main (void)
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24 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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25 #ifdef __i386__
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26 unsigned int eax, ebx, ecx, edx;
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27
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28 if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
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29 return 0;
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30
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31 if (!(edx & bit_CMPXCHG8B))
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32 return 0;
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33 #endif
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34
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35 do_test ();
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36
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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37 return 0;
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38 }