xref: /llvm-project/offload/test/mapping/implicit_device_ptr.c (revision 330d8983d25d08580fc1642fea48b2473f47a9da)
1 // RUN: %libomptarget-compile-run-and-check-generic
2 
3 #include <omp.h>
4 #include <stdio.h>
5 
6 // OpenMP 5.1. sec 5.8.6 "Pointer Initialization for Device Data Environments"
7 // p. 160 L32-33: "If a matching mapped list item is not found, the pointer
8 // retains its original value as per the32 firstprivate semantics described in
9 // Section 5.4.4."
10 
main(void)11 int main(void) {
12   int *A = (int *)omp_target_alloc(sizeof(int), omp_get_default_device());
13 
14 #pragma omp target
15   { *A = 1; }
16 
17   int Result = 0;
18 #pragma omp target map(from : Result)
19   { Result = *A; }
20 
21   // CHECK: PASS
22   if (Result == 1)
23     printf("PASS\n");
24 
25   omp_target_free(A, omp_get_default_device());
26 }
27