File: atomic-5.c

package info (click to toggle)
gcc-avr 1%3A5.4.0%2BAtmel3.6.2-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 589,872 kB
  • sloc: ansic: 2,775,581; ada: 756,757; cpp: 723,977; f90: 117,673; asm: 66,898; makefile: 62,755; xml: 44,466; sh: 29,549; exp: 23,315; objc: 15,216; fortran: 10,901; pascal: 4,185; python: 4,093; perl: 2,969; awk: 2,811; ml: 2,385; cs: 879; yacc: 316; lex: 198; haskell: 112; lisp: 8
file content (41 lines) | stat: -rw-r--r-- 655 bytes parent folder | download | duplicates (3) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
 
/* PR middle-end/36106 */
/* { dg-options "-O2" } */
/* { dg-options "-O2 -mcx16" { target { { i?86-*-* x86_64-*-* } && lp64 } } } */

#ifdef __x86_64__
# include "cpuid.h"
#endif

extern void abort (void);

int __attribute__((noinline))
do_test (void)
{
  long double d = .0L;
  int i;
  #pragma omp parallel for shared (d)
    for (i = 0; i < 10; i++)
      #pragma omp atomic
	d += 1.0L;
  if (d != 10.0L)
    abort ();
  return 0;
}

int
main (void)
{
#ifdef __x86_64__
  unsigned int eax, ebx, ecx, edx;

  if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
    return 0;

  if (!(ecx & bit_CMPXCHG16B))
    return 0;
#endif

  do_test ();

  return 0;
}