From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
 id 03562385780C; Thu, 13 May 2021 20:13:08 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 03562385780C
From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/99928] [OpenMP] reduction variable in combined
 target construct wrongly mapped as firstprivate
Date: Thu, 13 May 2021 20:13:08 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: middle-end
X-Bugzilla-Version: 11.0
X-Bugzilla-Keywords: openmp, wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: jakub at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-99928-4-4UMbPEBP7v@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-99928-4@http.gcc.gnu.org/bugzilla/>
References: <bug-99928-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Thu, 13 May 2021 20:13:09 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99928

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Tobias Burnus from comment #7)
> Created attachment 50810 [details]
> Fortran version of the  C testcases (see comment 7 for notes)
>=20
> Fortran conversion of the C/C++ testcases of comment 7 /
> r12-773-gd80aeff0bf2f455e9099def756f612bfbcd2cb0d
>=20
> Currently fails to compile due to those issues:
> * 'taskloop' not yet implemented
> * 'loop' not yet implemented
> * 'parallel master' not supported
> * 'reduction(+:r00[1:2])' not supported (also not with '[...]' replaced by
> '(...)')

I believe in Fortran those ought to be normal base language array sections,
so reduction(+:r00(2:3)) or so.
E.g. 5.0 says in [296:11] "The list items that appear in a reduction clause=
 may
include array sections."
and [46:6-7] says: "Fortran has built-in support for array sections although
some restrictions apply to their use, as enumerated in the following sectio=
n."
and later there are restrictions.
If we don't handle array sections in reduction, that would be missing item =
from
4.0 -> 4.5 support I think; do we handle array sections on map/to/from at
least?=