6e8d93e5c2
In OpenMP 5.2, §5.8.6, page 160 line 32-33, when a device pointer allocated by omp_target_alloc has implicitly been included on a target construct as a zero-length array, the pointer initialisation should not find a matching mapped list item, and so should retain its value as a firstprivate variable. Previously, we would return a null pointer if the list item was not found. This patch updates the map handling to the OpenMP 5.2 semantics. Reviewed By: jdoerfert, ye-luo Differential Revision: https://reviews.llvm.org/D133447
27 lines
656 B
C
27 lines
656 B
C
// RUN: %libomptarget-compile-run-and-check-generic
|
|
|
|
#include <omp.h>
|
|
#include <stdio.h>
|
|
|
|
// OpenMP 5.1. sec 5.8.6 "Pointer Initialization for Device Data Environments"
|
|
// p. 160 L32-33: "If a matching mapped list item is not found, the pointer
|
|
// retains its original value as per the32 firstprivate semantics described in
|
|
// Section 5.4.4."
|
|
|
|
int main(void) {
|
|
int *A = (int *)omp_target_alloc(sizeof(int), omp_get_default_device());
|
|
|
|
#pragma omp target
|
|
{ *A = 1; }
|
|
|
|
int Result = 0;
|
|
#pragma omp target map(from : Result)
|
|
{ Result = *A; }
|
|
|
|
// CHECK: PASS
|
|
if (Result == 1)
|
|
printf("PASS\n");
|
|
|
|
omp_target_free(A, omp_get_default_device());
|
|
}
|