2015-05-04 Sandra Loosemore <sandra@codesourcery.com>
[official-gcc.git] / gcc / testsuite / gcc.dg / builtin-prefetch-1.c
blob11beb4e1bbe2fda9e33ebfa66eeb071a5e18279d
1 /* Test that __builtin_prefetch does no harm.
3 Prefetch using some invalid rw and locality values. These must be
4 compile-time constants. */
6 /* { dg-do run } */
8 extern void exit (int);
10 enum locality { none, low, moderate, high, bogus };
11 enum rw { read, write };
13 int arr[10];
15 void
16 good (int *p)
18 __builtin_prefetch (p, 0, 0);
19 __builtin_prefetch (p, 0, 1);
20 __builtin_prefetch (p, 0, 2);
21 __builtin_prefetch (p, 0, 3);
22 __builtin_prefetch (p, 1, 0);
23 __builtin_prefetch (p, 1, 1);
24 __builtin_prefetch (p, 1, 2);
25 __builtin_prefetch (p, 1, 3);
28 void
29 bad (int *p)
31 __builtin_prefetch (p, -1, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
32 __builtin_prefetch (p, 2, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
33 __builtin_prefetch (p, bogus, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
34 __builtin_prefetch (p, 0, -1); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
35 __builtin_prefetch (p, 0, 4); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
36 __builtin_prefetch (p, 0, bogus); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
39 int
40 main ()
42 good (arr);
43 bad (arr);
44 exit (0);