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-rw-r--r--libgomp/loop.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/libgomp/loop.c b/libgomp/loop.c
index 3d1b1ef..58fd9a8 100644
--- a/libgomp/loop.c
+++ b/libgomp/loop.c
@@ -34,13 +34,14 @@
/* Initialize the given work share construct from the given arguments. */
static inline void
-gomp_loop_init (struct gomp_work_share *ws, unsigned long start,
- unsigned long end, unsigned long incr,
- enum gomp_schedule_type sched, unsigned long chunk_size)
+gomp_loop_init (struct gomp_work_share *ws, long start, long end, long incr,
+ enum gomp_schedule_type sched, long chunk_size)
{
ws->sched = sched;
ws->chunk_size = chunk_size;
- ws->end = end;
+ /* Canonicalize loops that have zero iterations to ->next == ->end. */
+ ws->end = ((incr > 0 && start > end) || (incr < 0 && start < end))
+ ? start : end;
ws->incr = incr;
ws->next = start;
}
@@ -148,9 +149,6 @@ gomp_loop_ordered_static_start (long start, long end, long incr,
{
struct gomp_thread *thr = gomp_thread ();
- if (start == end)
- return false;
-
if (gomp_work_share_start (true))
{
gomp_loop_init (thr->ts.work_share, start, end, incr,