diff options
Diffstat (limited to 'libgomp')
| -rw-r--r-- | libgomp/taskloop.c | 22 | ||||
| -rw-r--r-- | libgomp/testsuite/libgomp.c/task-reduction-4.c | 21 |
2 files changed, 38 insertions, 5 deletions
diff --git a/libgomp/taskloop.c b/libgomp/taskloop.c index 75697fecb8a..791178a1fd7 100644 --- a/libgomp/taskloop.c +++ b/libgomp/taskloop.c @@ -51,20 +51,32 @@ GOMP_taskloop (void (*fn) (void *), void *data, void (*cpyfn) (void *, void *), /* If parallel or taskgroup has been cancelled, don't start new tasks. */ if (team && gomp_team_barrier_cancelled (&team->barrier)) - return; + { + early_return: + if ((flags & (GOMP_TASK_FLAG_NOGROUP | GOMP_TASK_FLAG_REDUCTION)) + == GOMP_TASK_FLAG_REDUCTION) + { + struct gomp_data_head { TYPE t1, t2; uintptr_t *ptr; }; + uintptr_t *ptr = ((struct gomp_data_head *) data)->ptr; + /* Tell callers GOMP_taskgroup_reduction_register has not been + called. */ + ptr[2] = 0; + } + return; + } #ifdef TYPE_is_long TYPE s = step; if (step > 0) { if (start >= end) - return; + goto early_return; s--; } else { if (start <= end) - return; + goto early_return; s++; } UTYPE n = (end - start + s) / step; @@ -73,13 +85,13 @@ GOMP_taskloop (void (*fn) (void *), void *data, void (*cpyfn) (void *, void *), if (flags & GOMP_TASK_FLAG_UP) { if (start >= end) - return; + goto early_return; n = (end - start + step - 1) / step; } else { if (start <= end) - return; + goto early_return; n = (start - end - step - 1) / -step; } #endif diff --git a/libgomp/testsuite/libgomp.c/task-reduction-4.c b/libgomp/testsuite/libgomp.c/task-reduction-4.c new file mode 100644 index 00000000000..7ca1d02fa19 --- /dev/null +++ b/libgomp/testsuite/libgomp.c/task-reduction-4.c @@ -0,0 +1,21 @@ +/* PR middle-end/100471 */ + +extern void abort (void); + +int c; + +int +main () +{ +#pragma omp parallel +#pragma omp single + { + int r = 0, i; + #pragma omp taskloop reduction(+:r) + for (i = 0; i < c; i++) + r++; + if (r != 0) + abort (); + } + return 0; +} |