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111
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1 /* Test that __builtin_prefetch does no harm.
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2
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3 Prefetch using some invalid rw and locality values. These must be
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4 compile-time constants. */
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5
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6 /* { dg-do run } */
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7
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8 extern void exit (int);
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9
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10 enum locality { none, low, moderate, high, bogus };
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11 enum rw { read, write };
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12
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13 int arr[10];
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14
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15 void
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16 good (int *p)
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17 {
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18 __builtin_prefetch (p, 0, 0);
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19 __builtin_prefetch (p, 0, 1);
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20 __builtin_prefetch (p, 0, 2);
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21 __builtin_prefetch (p, 0, 3);
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22 __builtin_prefetch (p, 1, 0);
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23 __builtin_prefetch (p, 1, 1);
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24 __builtin_prefetch (p, 1, 2);
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25 __builtin_prefetch (p, 1, 3);
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26 }
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27
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28 void
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29 bad (int *p)
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30 {
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31 __builtin_prefetch (p, -1, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
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32 __builtin_prefetch (p, 2, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
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33 __builtin_prefetch (p, bogus, 0); /* { dg-warning "invalid second argument to '__builtin_prefetch'; using zero" } */
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34 __builtin_prefetch (p, 0, -1); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
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35 __builtin_prefetch (p, 0, 4); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
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36 __builtin_prefetch (p, 0, bogus); /* { dg-warning "invalid third argument to '__builtin_prefetch'; using zero" } */
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37 }
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38
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39 int
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40 main ()
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41 {
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42 good (arr);
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43 bad (arr);
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44 exit (0);
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45 }
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