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| // RUN: %compile-run-and-check
#include <stdio.h>
#include <omp.h>
const int WarpSize = 32;
const int ThreadLimit = 1 * WarpSize;
const int NumThreads2 = 2 * WarpSize;
const int NumThreads3 = 3 * WarpSize;
const int MaxThreads = 1024;
int main(int argc, char *argv[]) {
int check1[MaxThreads];
int check2[MaxThreads];
int check3[MaxThreads];
for (int i = 0; i < MaxThreads; i++) {
check1[i] = check2[i] = check3[i] = 0;
}
int threadLimit = -1;
#pragma omp target teams num_teams(1) thread_limit(ThreadLimit) \
map(check1[:], check2[:], check3[:], threadLimit)
{
threadLimit = omp_get_thread_limit();
// All parallel regions should get as many threads as specified by the
// thread_limit() clause.
#pragma omp parallel
{
check1[omp_get_thread_num()] += omp_get_num_threads();
}
omp_set_num_threads(NumThreads2);
#pragma omp parallel
{
check2[omp_get_thread_num()] += omp_get_num_threads();
}
#pragma omp parallel num_threads(NumThreads3)
{
check3[omp_get_thread_num()] += omp_get_num_threads();
}
}
// CHECK: threadLimit = 32
printf("threadLimit = %d\n", threadLimit);
// CHECK-NOT: invalid
for (int i = 0; i < MaxThreads; i++) {
if (i < ThreadLimit) {
if (check1[i] != ThreadLimit) {
printf("invalid: check1[%d] should be %d, is %d\n", i, ThreadLimit, check1[i]);
}
} else if (check1[i] != 0) {
printf("invalid: check1[%d] should be 0, is %d\n", i, check1[i]);
}
if (i < ThreadLimit) {
if (check2[i] != ThreadLimit) {
printf("invalid: check2[%d] should be %d, is %d\n", i, ThreadLimit, check2[i]);
}
} else if (check2[i] != 0) {
printf("invalid: check2[%d] should be 0, is %d\n", i, check2[i]);
}
if (i < ThreadLimit) {
if (check3[i] != ThreadLimit) {
printf("invalid: check3[%d] should be %d, is %d\n", i, ThreadLimit, check3[i]);
}
} else if (check3[i] != 0) {
printf("invalid: check3[%d] should be 0, is %d\n", i, check3[i]);
}
}
return 0;
}
|