offload/test/mapping/implicit_device_ptr.c

   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
  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 }