7459e10f34
The PR refactors the non-contiguous update tests as raised as a TODO in one of the comments in the related PR. Prefixed all with `strided_update`. For offload tests, added a dedicated sub-directory.
87 lines
2.0 KiB
C
87 lines
2.0 KiB
C
// RUN: %libomptarget-compile-run-and-check-generic
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// This test checks that "update from" with user-defined mapper supports strided
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// sections using fixed-size arrays in structs.
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#include <omp.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define N 16
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typedef struct {
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double data[N];
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size_t len;
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} T;
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#pragma omp declare mapper(custom : T v) map(to : v, v.len, v.data[0 : v.len])
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int main() {
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T s;
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s.len = N;
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for (int i = 0; i < N; i++) {
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s.data[i] = i;
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}
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printf("original host array values:\n");
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for (int i = 0; i < N; i++)
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printf("%f\n", s.data[i]);
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printf("\n");
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#pragma omp target data map(mapper(custom), to : s)
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{
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// Execute on device with explicit mapper
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#pragma omp target map(mapper(custom), tofrom : s)
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{
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for (int i = 0; i < s.len; i++) {
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s.data[i] += i;
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}
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}
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// Update strided elements from device: indices 0,2,4,6,8,10,12,14
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#pragma omp target update from(s.data[0 : 8 : 2])
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}
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printf("from target array results:\n");
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for (int i = 0; i < N; i++)
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printf("%f\n", s.data[i]);
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// CHECK: original host array values:
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// CHECK-NEXT: 0.000000
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// CHECK-NEXT: 1.000000
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// CHECK-NEXT: 2.000000
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// CHECK-NEXT: 3.000000
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// CHECK-NEXT: 4.000000
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// CHECK-NEXT: 5.000000
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// CHECK-NEXT: 6.000000
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// CHECK-NEXT: 7.000000
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// CHECK-NEXT: 8.000000
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// CHECK-NEXT: 9.000000
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// CHECK-NEXT: 10.000000
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// CHECK-NEXT: 11.000000
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// CHECK-NEXT: 12.000000
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// CHECK-NEXT: 13.000000
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// CHECK-NEXT: 14.000000
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// CHECK-NEXT: 15.000000
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// CHECK: from target array results:
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// CHECK-NEXT: 0.000000
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// CHECK-NEXT: 1.000000
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// CHECK-NEXT: 4.000000
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// CHECK-NEXT: 3.000000
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// CHECK-NEXT: 8.000000
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// CHECK-NEXT: 5.000000
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// CHECK-NEXT: 12.000000
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// CHECK-NEXT: 7.000000
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// CHECK-NEXT: 16.000000
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// CHECK-NEXT: 9.000000
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// CHECK-NEXT: 20.000000
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// CHECK-NEXT: 11.000000
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// CHECK-NEXT: 24.000000
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// CHECK-NEXT: 13.000000
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// CHECK-NEXT: 28.000000
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// CHECK-NEXT: 15.000000
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return 0;
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}
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