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 8extern void exit (int); 9 10enum locality { none, low, moderate, high, bogus }; 11enum rw { read, write }; 12 13int arr[10]; 14 15void 16good (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 28void 29bad (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 39int 40main () 41{ 42 good (arr); 43 bad (arr); 44 exit (0); 45} 46