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// RUN: %libomptarget-compile-run-and-check-generic
// XFAIL: intelgpu
// This test checks that "update from" with user-defined mapper supports strided
// sections using fixed-size arrays in structs.
#include <omp.h>
#include <stdio.h>
#include <stdlib.h>
#define N 16
typedef struct {
double data[N];
size_t len;
} T;
#pragma omp declare mapper(custom : T v) map(to : v, v.len, v.data[0 : v.len])
int main() {
T s;
s.len = N;
for (int i = 0; i < N; i++) {
s.data[i] = i;
}
printf("original host array values:\n");
for (int i = 0; i < N; i++)
printf("%f\n", s.data[i]);
printf("\n");
#pragma omp target data map(mapper(custom), to : s)
{
// Execute on device with explicit mapper
#pragma omp target map(mapper(custom), tofrom : s)
{
for (int i = 0; i < s.len; i++) {
s.data[i] += i;
}
}
// Update strided elements from device: indices 0,2,4,6,8,10,12,14
#pragma omp target update from(s.data[0 : 8 : 2])
}
printf("from target array results:\n");
for (int i = 0; i < N; i++)
printf("%f\n", s.data[i]);
// CHECK: original host array values:
// CHECK-NEXT: 0.000000
// CHECK-NEXT: 1.000000
// CHECK-NEXT: 2.000000
// CHECK-NEXT: 3.000000
// CHECK-NEXT: 4.000000
// CHECK-NEXT: 5.000000
// CHECK-NEXT: 6.000000
// CHECK-NEXT: 7.000000
// CHECK-NEXT: 8.000000
// CHECK-NEXT: 9.000000
// CHECK-NEXT: 10.000000
// CHECK-NEXT: 11.000000
// CHECK-NEXT: 12.000000
// CHECK-NEXT: 13.000000
// CHECK-NEXT: 14.000000
// CHECK-NEXT: 15.000000
// CHECK: from target array results:
// CHECK-NEXT: 0.000000
// CHECK-NEXT: 1.000000
// CHECK-NEXT: 4.000000
// CHECK-NEXT: 3.000000
// CHECK-NEXT: 8.000000
// CHECK-NEXT: 5.000000
// CHECK-NEXT: 12.000000
// CHECK-NEXT: 7.000000
// CHECK-NEXT: 16.000000
// CHECK-NEXT: 9.000000
// CHECK-NEXT: 20.000000
// CHECK-NEXT: 11.000000
// CHECK-NEXT: 24.000000
// CHECK-NEXT: 13.000000
// CHECK-NEXT: 28.000000
// CHECK-NEXT: 15.000000
return 0;
}
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