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Re: [gomp4] OpenACC reduction tests

From: Thomas Schwinge <thomas at codesourcery dot com>
To: Cesar Philippidis <cesar at codesourcery dot com>, Nathan Sidwell <nathan_sidwell at mentor dot com>
Cc: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, Jakub Jelinek <jakub at redhat dot com>
Date: Sat, 7 Nov 2015 12:15:09 +0100
Subject: Re: [gomp4] OpenACC reduction tests
Authentication-results: sourceware.org; auth=none
References: <55A945A1 dot 4090109 at codesourcery dot com> <55A945E7 dot 2050005 at codesourcery dot com> <8737yc2lle dot fsf at kepler dot schwinge dot homeip dot net> <87d1x9zhz7 dot fsf at kepler dot schwinge dot homeip dot net>

Hi!

On Wed, 23 Sep 2015 09:56:44 +0200, I wrote:
> On Fri, 18 Sep 2015 10:11:25 +0200, I wrote:
> > On Fri, 17 Jul 2015 11:13:59 -0700, Cesar Philippidis <cesar@codesourcery.com> wrote:
> > > This patch updates the libgomp OpenACC reduction test cases [...]

> > Given the following
> > -Wuninitialized/-Wmaybe-uninitialized warnings (for -O1, for example),
> > maybe there's some initialization of (internal) variables missing?
> > (These user-visible warnings about compiler internals need to be
> > addressed regardless.)  Would you please have a look at that?
> > 
> >     source-gcc/libgomp/testsuite/libgomp.oacc-fortran/reduction-5.f90: In function 'redsub_combined_._omp_fn.0':
> >     source-gcc/libgomp/testsuite/libgomp.oacc-fortran/reduction-5.f90:73:0: warning: '<anonymous>' is used uninitialized in this function [-Wuninitialized]
> >        !$acc loop reduction(+:sum) gang worker vector
> >     ^
> >     source-gcc/libgomp/testsuite/libgomp.oacc-fortran/reduction-5.f90: In function 'redsub_vector_._omp_fn.1':
> >     source-gcc/libgomp/testsuite/libgomp.oacc-fortran/reduction-5.f90:60:0: warning: '<anonymous>' is used uninitialized in this function [-Wuninitialized]
> >        !$acc loop reduction(+:sum) vector
> >     ^
> >     source-gcc/libgomp/testsuite/libgomp.oacc-fortran/reduction-5.f90: In function 'redsub_worker_._omp_fn.2':
> >     source-gcc/libgomp/testsuite/libgomp.oacc-fortran/reduction-5.f90:47:0: warning: '<anonymous>' is used uninitialized in this function [-Wuninitialized]
> >        !$acc loop reduction(+:sum) worker
> >     ^
> >     source-gcc/libgomp/testsuite/libgomp.oacc-fortran/reduction-5.f90: In function 'redsub_gang_._omp_fn.3':
> >     source-gcc/libgomp/testsuite/libgomp.oacc-fortran/reduction-5.f90:34:0: warning: 'sum.43' may be used uninitialized in this function [-Wmaybe-uninitialized]
> >        !$acc loop reduction(+:sum) gang
> >     ^

I didn't see anyone explicitly claim to have fixed that; however, the
warnings are gone.


GrÃÃe
 Thomas

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