1 /* Test that __builtin_prefetch does no harm.
2
3 Prefetch using some invalid rw and locality values. These must be
4 compile-time constants. */
5
6 /* { dg-do run } */
7
8 extern void exit (int);
9
10 enum locality { none, low, moderate, high, bogus };
11 enum rw { read, write };
12
13 int arr[10];
14
15 void
good(int * p)16 good (int *p)
17 {
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);
26 }
27
28 void
bad(int * p)29 bad (int *p)
30 {
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" } */
37 }
38
39 int
main()40 main ()
41 {
42 good (arr);
43 bad (arr);
44 exit (0);
45 }
46