From: Cesar Philippidis <cesar@codesourcery.com>
To: Jakub Jelinek <jakub@redhat.com>
Cc: Thomas Schwinge <thomas@codesourcery.com>,
Julian Brown <julian@codesourcery.com>,
GCC Patches <gcc-patches@gcc.gnu.org>,
James Norris <jnorris@codesourcery.com>,
"Joseph S. Myers" <joseph@codesourcery.com>,
Nathan Sidwell <Nathan_Sidwell@mentor.com>,
Fortran List <fortran@gcc.gnu.org>
Subject: Re: [OpenACC 0/7] host_data construct
Date: Wed, 02 Dec 2015 19:54:00 -0000 [thread overview]
Message-ID: <565F4C88.3050707@codesourcery.com> (raw)
In-Reply-To: <20151202193502.GY5675@tucnak.redhat.com>
On 12/02/2015 11:35 AM, Jakub Jelinek wrote:
> On Wed, Dec 02, 2015 at 11:16:10AM -0800, Cesar Philippidis wrote:
>>> --- gcc/testsuite/gfortran.dg/goacc/coarray_2.f90
>>> +++ gcc/testsuite/gfortran.dg/goacc/coarray_2.f90
>>> @@ -3,6 +3,7 @@
>>> !
>>> ! PR fortran/63861
>>> ! { dg-xfail-if "<http://gcc.gnu.org/PR63861>" { *-*-* } }
>>> +! { dg-excess-errors "TODO" }
>>
>> This host_data patch exposed a bug in the fortran front end where it was
>> allowing arrays to be used as reduction variables. If replace you
>> replace codimension with dimension, you'd see a similar ICE. The
>> attached patch, while it doesn't make any attempt to fix the gimplifier
>> changes, does teach the fortran front end to error on acc reductions
>> containing array variables.
>
> Does the OpenACC standard disallow array reductions?
> Just asking, because OpenMP allows them (up to 4.0 only in Fortran,
> in 4.5 also C/C++ array sections are allowed).
>
> If the OpenACC standard disallows them, then it is desirable to reject them
> and the patch is ok, otherwise you should try harder to support them ;).
Array reductions aren't supported in OpenACC 2.0.
Cesar
next prev parent reply other threads:[~2015-12-02 19:54 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-22 19:14 James Norris
2015-10-22 19:15 ` [OpenACC 2/7] host_data construct (C FE) James Norris
2015-10-22 19:15 ` [OpenACC 1/7] host_data construct (C/C++ common) James Norris
2015-10-22 19:16 ` [OpenACC 3/7] host_data construct (C front-end) James Norris
2015-10-22 19:18 ` [OpenACC 4/7] host_data construct (middle end) James Norris
2015-10-22 19:19 ` [OpenACC 5/7] host_data construct (gcc tests) James Norris
2015-10-22 19:20 ` [OpenACC 6/7] host_data construct James Norris
2015-10-22 19:22 ` [OpenACC 7/7] host_data construct (runtime tests) James Norris
2015-10-22 20:42 ` [OpenACC 0/7] host_data construct Joseph Myers
2015-10-22 20:53 ` James Norris
2015-10-23 16:01 ` [Bulk] " James Norris
2015-10-26 18:36 ` Jakub Jelinek
2015-10-27 15:57 ` Cesar Philippidis
2015-11-02 18:33 ` Julian Brown
2015-11-02 19:29 ` Jakub Jelinek
2015-11-12 11:16 ` Julian Brown
2015-11-18 12:48 ` Julian Brown
2015-11-19 13:13 ` Jakub Jelinek
2015-11-19 14:29 ` Julian Brown
2015-11-19 15:57 ` Jakub Jelinek
2015-11-30 19:34 ` Julian Brown
2015-12-01 8:30 ` Jakub Jelinek
2015-12-02 15:27 ` Tom de Vries
2015-12-02 15:59 ` Thomas Schwinge
2015-12-02 19:16 ` Cesar Philippidis
2015-12-02 19:28 ` Steve Kargl
2015-12-02 19:35 ` Jakub Jelinek
2015-12-02 19:54 ` Cesar Philippidis [this message]
2015-12-02 22:14 ` [gomp4] " Thomas Schwinge
2016-04-08 13:41 ` Fortran OpenACC host_data construct ICE (was: [gomp4] Re: [OpenACC 0/7] host_data construct) Thomas Schwinge
2016-02-02 13:57 ` [OpenACC 0/7] host_data construct Thomas Schwinge
2015-11-13 15:31 ` [Bulk] " Jakub Jelinek
2015-12-23 11:02 ` Thomas Schwinge
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