| // RUN: %libomptarget-compile-run-and-check-generic |
| |
| // REQUIRES: unified_shared_memory |
| |
| #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; |
| } |