mirror of git://gcc.gnu.org/git/gcc.git
39 lines
876 B
C
39 lines
876 B
C
/* { dg-do run } */
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/* { dg-require-effective-target omp_managedmem } */
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/* Check that omp_calloc can allocate Managed Memory, and that host and target
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can see the data, at the same address, without a mapping. */
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#include <omp.h>
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#include <stdint.h>
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int
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main ()
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{
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int *a = (int *) omp_calloc(5, sizeof(int), ompx_gnu_managed_mem_alloc);
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if (!a)
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__builtin_abort ();
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/* Check that memory is zero-initialized */
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for (int i = 0; i < 5; i++)
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if (a[i] != 0)
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__builtin_abort ();
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a[0] = 42;
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a[4] = 99;
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uintptr_t a_p = (uintptr_t)a;
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#pragma omp target is_device_ptr(a)
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{
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if (a[0] != 42 || a[4] != 99 || a_p != (uintptr_t)a)
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__builtin_abort ();
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/* Check zero-initialization on device side */
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for (int i = 1; i < 4; i++)
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if (a[i] != 0)
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__builtin_abort ();
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}
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omp_free(a, ompx_gnu_managed_mem_alloc);
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return 0;
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}
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