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868900245e
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/* Test that __builtin_prefetch does no harm.
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Prefetch using all valid combinations of rw and locality values.
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These must be compile-time constants. */
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#define NO_TEMPORAL_LOCALITY 0
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#define LOW_TEMPORAL_LOCALITY 1
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#define MODERATE_TEMPORAL_LOCALITY 1
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#define HIGH_TEMPORAL_LOCALITY 3
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#define WRITE_ACCESS 1
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#define READ_ACCESS 0
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enum locality { none, low, moderate, high };
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enum rw { read, write };
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int arr[10];
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void
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good_const (int *p)
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{
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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, 2);
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__builtin_prefetch (p, READ_ACCESS, 3);
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__builtin_prefetch (p, 1, NO_TEMPORAL_LOCALITY);
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__builtin_prefetch (p, 1, LOW_TEMPORAL_LOCALITY);
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__builtin_prefetch (p, 1, MODERATE_TEMPORAL_LOCALITY);
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__builtin_prefetch (p, WRITE_ACCESS, HIGH_TEMPORAL_LOCALITY);
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}
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void
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good_enum (int *p)
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{
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__builtin_prefetch (p, read, none);
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__builtin_prefetch (p, read, low);
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__builtin_prefetch (p, read, moderate);
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__builtin_prefetch (p, read, high);
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__builtin_prefetch (p, write, none);
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__builtin_prefetch (p, write, low);
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__builtin_prefetch (p, write, moderate);
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__builtin_prefetch (p, write, high);
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}
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void
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good_expr (int *p)
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{
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__builtin_prefetch (p, 1 - 1, 6 - (2 * 3));
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__builtin_prefetch (p, 1 + 0, 1 + 2);
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}
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int
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main ()
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{
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good_const (arr);
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good_enum (arr);
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good_expr (arr);
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exit (0);
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}
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