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| // RUN: %libomptarget-compile-run-and-check-aarch64-unknown-linux-gnu
// RUN: %libomptarget-compile-run-and-check-powerpc64-ibm-linux-gnu
// RUN: %libomptarget-compile-run-and-check-powerpc64le-ibm-linux-gnu
// RUN: %libomptarget-compile-run-and-check-x86_64-pc-linux-gnu
#include <omp.h>
#include <stdio.h>
// ---------------------------------------------------------------------------
// Various definitions copied from OpenMP RTL
extern void __tgt_register_requires(int64_t);
extern void __tgt_target_data_begin(int64_t device_id, int32_t arg_num,
void **args_base, void **args,
int64_t *arg_sizes, int64_t *arg_types);
extern void __tgt_target_data_end(int64_t device_id, int32_t arg_num,
void **args_base, void **args,
int64_t *arg_sizes, int64_t *arg_types);
// End of definitions copied from OpenMP RTL.
// ---------------------------------------------------------------------------
#pragma omp requires unified_shared_memory
#define N 1024
int main(int argc, char *argv[]) {
int fails;
void *host_alloc = 0, *device_alloc = 0;
int *a = (int *)malloc(N * sizeof(int));
// Manual registration of requires flags for Clang versions
// that do not support requires.
__tgt_register_requires(8);
// Init
for (int i = 0; i < N; ++i) {
a[i] = 10;
}
host_alloc = &a[0];
// Dummy target region that ensures the runtime library is loaded when
// the target data begin/end functions are manually called below.
#pragma omp target
{}
// Manual calls
int device_id = omp_get_default_device();
int arg_num = 1;
void **args_base = (void **)&a;
void **args = (void **)&a;
int64_t arg_sizes[arg_num];
arg_sizes[0] = sizeof(int) * N;
int64_t arg_types[arg_num];
// Ox400 enables the CLOSE map type in the runtime:
// OMP_TGT_MAPTYPE_CLOSE = 0x400
// OMP_TGT_MAPTYPE_TO = 0x001
arg_types[0] = 0x400 | 0x001;
device_alloc = host_alloc;
__tgt_target_data_begin(device_id, arg_num, args_base, args, arg_sizes,
arg_types);
#pragma omp target data use_device_ptr(a)
{ device_alloc = a; }
__tgt_target_data_end(device_id, arg_num, args_base, args, arg_sizes,
arg_types);
// CHECK: a was copied to the device
if (device_alloc != host_alloc)
printf("a was copied to the device\n");
free(a);
// CHECK: Done!
printf("Done!\n");
return 0;
}
|