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- /* { dg-do run } */
- /* { dg-require-effective-target offload_device_nonshared_as } */
- #include <stdlib.h>
- #include <omp.h>
- #define THRESHOLD 1000
- const int MAX = 1800;
- void check (short *a, short *b, int N)
- {
- int i;
- for (i = 0; i < N; i++)
- if (a[i] != b[i])
- abort ();
- }
- void init (short *a1, short *a2, int N)
- {
- short s = -1;
- int i;
- for (i = 0; i < N; i++)
- {
- a1[i] = s;
- a2[i] = i;
- s = -s;
- }
- }
- void vec_mult_ref (short *p, short *v1, short *v2, int N)
- {
- int i;
- for (i = 0; i < N; i++)
- p[i] = v1[i] * v2[i];
- }
- void vec_mult (short *p, short *v1, short *v2, int N)
- {
- int i;
- #pragma omp target data map(from: p[0:N])
- #pragma omp target if (N > THRESHOLD) map(to: v1[:N], v2[:N])
- {
- if (omp_is_initial_device ())
- abort ();
- #pragma omp parallel for
- for (i = 0; i < N; i++)
- p[i] = v1[i] * v2[i];
- }
- }
- int main ()
- {
- short *p1 = (short *) malloc (MAX * sizeof (short));
- short *p2 = (short *) malloc (MAX * sizeof (short));
- short *v1 = (short *) malloc (MAX * sizeof (short));
- short *v2 = (short *) malloc (MAX * sizeof (short));
- init (v1, v2, MAX);
- vec_mult_ref (p1, v1, v2, MAX);
- vec_mult (p2, v1, v2, MAX);
- check (p1, p2, MAX);
- free (p1);
- free (p2);
- free (v1);
- free (v2);
- return 0;
- }
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