public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug middle-end/109013] New: [OpenMP] Diagnose if multiple 'omp ordered' appear in a loop body
@ 2023-03-03 17:04 burnus at gcc dot gnu.org
2023-03-03 17:25 ` [Bug middle-end/109013] " jakub at gcc dot gnu.org
2023-03-03 18:03 ` jakub at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: burnus at gcc dot gnu.org @ 2023-03-03 17:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109013
Bug ID: 109013
Summary: [OpenMP] Diagnose if multiple 'omp ordered' appear in
a loop body
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Keywords: diagnostic, openmp
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
Target Milestone: ---
The following code is accepted – while clang errors with:
test.c:18:5: error: exactly one 'ordered' directive must appear in the loop
body of an enclosing directive
Cf. "Additional restrictions to the block-associated ordered construct are as
follows:"
...
"During execution of the logical iteration of a loop-associated construct, a
thread must not execute more than one block-associated ordered region that
binds to the corresponding region of the loop-associated construct."
int a[10];
void foo(int n)
{
#if 0
#pragma omp for ordered schedule(static)
#pragma omp unroll partial(2)
for(int i = 1; i < n; i++) {
#pragma omp ordered
a[i] += a[i-1];
}
// ->
#endif
#pragma omp for ordered schedule(static)
for(int i = 1; i < n; i += 2) {
#pragma omp ordered
a[i] += a[i-1];
#pragma omp ordered
a[i+1] += a[i];
}
}
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2023-03-03 18:03 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-03-03 17:04 [Bug middle-end/109013] New: [OpenMP] Diagnose if multiple 'omp ordered' appear in a loop body burnus at gcc dot gnu.org
2023-03-03 17:25 ` [Bug middle-end/109013] " jakub at gcc dot gnu.org
2023-03-03 18:03 ` jakub at gcc dot gnu.org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).