/* Test that __builtin_prefetch does no harm.
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/* Test that __builtin_prefetch does no harm.
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Prefetch using some invalid rw and locality values. These must be
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Prefetch using some invalid rw and locality values. These must be
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compile-time constants. */
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compile-time constants. */
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/* { dg-do run } */
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/* { dg-do run } */
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extern void exit (int);
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extern void exit (int);
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enum locality { none, low, moderate, high, bogus };
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enum locality { none, low, moderate, high, bogus };
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enum rw { read, write };
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enum rw { read, write };
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int arr[10];
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int arr[10];
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void
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void
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good (int *p)
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good (int *p)
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{
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{
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__builtin_prefetch (p, 0, 0);
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__builtin_prefetch (p, 0, 0);
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__builtin_prefetch (p, 0, 1);
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__builtin_prefetch (p, 0, 1);
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__builtin_prefetch (p, 0, 2);
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__builtin_prefetch (p, 0, 2);
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__builtin_prefetch (p, 0, 3);
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__builtin_prefetch (p, 0, 3);
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__builtin_prefetch (p, 1, 0);
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__builtin_prefetch (p, 1, 0);
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__builtin_prefetch (p, 1, 1);
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__builtin_prefetch (p, 1, 1);
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__builtin_prefetch (p, 1, 2);
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__builtin_prefetch (p, 1, 2);
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__builtin_prefetch (p, 1, 3);
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__builtin_prefetch (p, 1, 3);
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}
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}
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void
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void
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bad (int *p)
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bad (int *p)
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{
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{
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__builtin_prefetch (p, -1, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
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__builtin_prefetch (p, -1, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
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__builtin_prefetch (p, 2, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
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__builtin_prefetch (p, 2, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
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__builtin_prefetch (p, bogus, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
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__builtin_prefetch (p, bogus, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
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__builtin_prefetch (p, 0, -1); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
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__builtin_prefetch (p, 0, -1); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
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__builtin_prefetch (p, 0, 4); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
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__builtin_prefetch (p, 0, 4); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
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__builtin_prefetch (p, 0, bogus); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
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__builtin_prefetch (p, 0, bogus); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
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}
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}
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int
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int
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main ()
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main ()
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{
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{
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good (arr);
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good (arr);
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bad (arr);
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bad (arr);
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exit (0);
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exit (0);
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}
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}
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