73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
// RUN: %libomp-compile-and-run
|
|
|
|
// Parsing error until gcc8:
|
|
// UNSUPPORTED: gcc-4, gcc-5, gcc-6, gcc-7, gcc-8
|
|
|
|
// Parsing error until clang11:
|
|
// UNSUPPORTED: clang-10, clang-9, clang-8, clang-7
|
|
|
|
// Missing GOMP_taskgroup_reduction_(un)register in LLVM/OpenMP
|
|
// Should be removed once the functions are implemented
|
|
// XFAIL: gcc-9, gcc-10
|
|
|
|
#include <stdio.h>
|
|
#include <omp.h>
|
|
|
|
int r;
|
|
|
|
int work(int k, int l)
|
|
{
|
|
return k + l + 1;
|
|
}
|
|
void bar(int i) {
|
|
#pragma omp taskgroup task_reduction(+:r)
|
|
{ int th_gen = omp_get_thread_num();
|
|
#pragma omp task in_reduction(+:r) firstprivate(i, th_gen)
|
|
{
|
|
r += work(i, 0);
|
|
printf("executing task (%d, 0), th %d (gen by th %d)\n", i, omp_get_thread_num(), th_gen);
|
|
}
|
|
#pragma omp task in_reduction(+:r) firstprivate(i, th_gen)
|
|
{
|
|
r += work(i, 1);
|
|
printf("executing task (%d, 1), th %d (gen by th %d)\n", i, omp_get_thread_num(), th_gen);
|
|
}
|
|
}
|
|
}
|
|
int foo() {
|
|
int i;
|
|
int th_gen = omp_get_thread_num();
|
|
#pragma omp taskgroup task_reduction(+:r)
|
|
{
|
|
bar(0);
|
|
}
|
|
printf("th %d passed bar0\n", th_gen);
|
|
#pragma omp taskloop reduction(+:r) firstprivate(th_gen)
|
|
for (i = 1; i < 4; ++i) {
|
|
bar(i);
|
|
printf("th %d (gen by th %d) passed bar%d in taskloop\n", omp_get_thread_num(), th_gen, i);
|
|
#pragma omp task in_reduction(+:r)
|
|
r += i;
|
|
}
|
|
return 0;
|
|
}
|
|
// res = ((1+2)+(2+3)+(3+4)+(4+5)+1+2+3) = 30
|
|
#define res 30
|
|
int main()
|
|
{
|
|
r = 0;
|
|
#pragma omp parallel num_threads(2)
|
|
{ // barrier ensures threads have started before tasks creation
|
|
#pragma omp barrier
|
|
// single ensures no race condition between taskgroup reductions
|
|
#pragma omp single nowait
|
|
foo();
|
|
}
|
|
if (r == res) {
|
|
return 0;
|
|
} else {
|
|
printf("error r = %d (!= %d)\n", r, res);
|
|
return 1;
|
|
}
|
|
}
|