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[libomptarget][OpenMP] Initial implementation of omp_target_memset() …
…and omp_target_memset_async() (#68706) Implement a slow-path version of omp_target_memset*() There is a TODO to implement a fast path that uses an on-device kernel instead of the host-based memory fill operation. This may require some additional plumbing to have kernels in libomptarget.so
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Original file line number | Diff line number | Diff line change |
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// RUN: %libomptarget-compile-and-run-generic | ||
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#include "stdio.h" | ||
#include <omp.h> | ||
#include <stdlib.h> | ||
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int main() { | ||
int d = omp_get_default_device(); | ||
int id = omp_get_initial_device(); | ||
int q[128], i; | ||
void *p; | ||
void *result; | ||
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if (d < 0 || d >= omp_get_num_devices()) | ||
d = id; | ||
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p = omp_target_alloc(130 * sizeof(int), d); | ||
if (p == NULL) | ||
return 0; | ||
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for (i = 0; i < 128; i++) | ||
q[i] = i; | ||
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result = omp_target_memset(p, 0, 130 * sizeof(int), d); | ||
if (result != p) { | ||
abort(); | ||
} | ||
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int q2[128]; | ||
for (i = 0; i < 128; ++i) | ||
q2[i] = i; | ||
if (omp_target_memcpy_async(q2, p, 128 * sizeof(int), 0, sizeof(int), id, d, | ||
0, NULL)) | ||
abort(); | ||
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#pragma omp taskwait | ||
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for (i = 0; i < 128; ++i) | ||
if (q2[i] != 0) | ||
abort(); | ||
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omp_target_free(p, d); | ||
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return 0; | ||
} |
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