File: array_section_use_device_ptr.c

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.8-2
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 2,236,724 kB
  • sloc: cpp: 7,619,776; ansic: 1,433,958; asm: 1,058,748; python: 252,197; f90: 94,671; objc: 70,753; lisp: 42,813; pascal: 18,401; sh: 8,601; ml: 5,111; perl: 4,720; makefile: 3,719; awk: 3,523; javascript: 2,272; xml: 892; fortran: 770
file content (35 lines) | stat: -rw-r--r-- 792 bytes parent folder | download | duplicates (13)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
// RUN: %libomptarget-compile-generic
// RUN: %libomptarget-run-generic 2>&1 \
// RUN: | %fcheck-generic

#include <stdio.h>
#include <stdlib.h>

#define N 1024
#define FROM 64
#define LENGTH 128

int main() {
  float *A = (float *)malloc(N * sizeof(float));

#pragma omp target enter data map(to : A[FROM : LENGTH])

  // A, has been mapped starting at index FROM, but inside the use_device_ptr
  // clause it is captured by base so the library must look it up using the
  // base address.

  float *A_dev = NULL;
#pragma omp target data use_device_ptr(A)
  { A_dev = A; }
#pragma omp target exit data map(delete : A[FROM : LENGTH])

  // CHECK: Success
  if (A_dev == NULL || A_dev == A)
    fprintf(stderr, "Failure\n");
  else
    fprintf(stderr, "Success\n");

  free(A);

  return 0;
}