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* Re: optimization/8794: [3.2/3.3 regression] optimization improperly eliminates certain expressions
@ 2002-12-03 8:10 reichelt
0 siblings, 0 replies; 5+ messages in thread
From: reichelt @ 2002-12-03 8:10 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, nobody, pageexec
Old Synopsis: optimization improperly eliminates certain expressions
New Synopsis: [3.2/3.3 regression] optimization improperly eliminates certain expressions
State-Changed-From-To: open->analyzed
State-Changed-By: reichelt
State-Changed-When: Tue Dec 3 08:10:01 2002
State-Changed-Why:
Confirmed.
OK with gcc 2.95.x, but fails with gcc 3.0.x, 3.2-branch,
and mainline. (Checked also on mips-sgi-irix6.5.)
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8794
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: optimization/8794: [3.2/3.3 regression] optimization improperly eliminates certain expressions
@ 2002-12-05 10:56 Eric Botcazou
0 siblings, 0 replies; 5+ messages in thread
From: Eric Botcazou @ 2002-12-05 10:56 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR optimization/8794; it has been noted by GNATS.
From: Eric Botcazou <ebotcazou@libertysurf.fr>
To: reichelt@igpm.rwth-aachen.de
Cc: gcc-bugs@gcc.gnu.org,
gcc-prs@gcc.gnu.org,
nobody@gcc.gnu.org,
pageexec@freemail.hu,
gcc-gnats@gcc.gnu.org
Subject: Re: optimization/8794: [3.2/3.3 regression] optimization improperly eliminates certain expressions
Date: Thu, 5 Dec 2002 19:49:40 +0100
> Old Synopsis: optimization improperly eliminates certain expressions
> New Synopsis: [3.2/3.3 regression] optimization improperly eliminates
> certain expressions
>
> State-Changed-From-To: open->analyzed
> State-Changed-By: reichelt
> State-Changed-When: Tue Dec 3 08:10:01 2002
> State-Changed-Why:
> Confirmed.
>
> OK with gcc 2.95.x, but fails with gcc 3.0.x, 3.2-branch,
> and mainline. (Checked also on mips-sgi-irix6.5.)
Are you sure for mainline ? I can't reproduce it with:
gcc version 3.3 20021205 (experimental)
The fix seems to be:
2002-11-20 Jakub Jelinek <jakub@redhat.com>
=09* combine.c (force_to_mode): Only replace with (not Y) if all bits in
=09fuller_mask (not just mask) are set in C.
http://gcc.gnu.org/ml/gcc-patches/2002-11/msg01045.html
--=20
Eric Botcazou
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: optimization/8794: [3.2/3.3 regression] optimization improperly eliminates certain expressions
@ 2002-12-05 11:06 Paolo Carlini
0 siblings, 0 replies; 5+ messages in thread
From: Paolo Carlini @ 2002-12-05 11:06 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR optimization/8794; it has been noted by GNATS.
From: Paolo Carlini <pcarlini@unitus.it>
To: gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org, pageexec@freemail.hu,
gcc-bugs@gcc.gnu.org, nobody@gcc.gnu.org
Cc: ebotcazou@libertysurf.fr, reichelt@igpm.rwth-aachen.de
Subject: Re: optimization/8794: [3.2/3.3 regression] optimization improperly
eliminates certain expressions
Date: Thu, 05 Dec 2002 20:01:33 +0100
Neither can I, with 3.3 20021204.
Ciao,
Paolo.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8794
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: optimization/8794: [3.2/3.3 regression] optimization improperly eliminates certain expressions
@ 2002-12-05 12:06 Eric Botcazou
0 siblings, 0 replies; 5+ messages in thread
From: Eric Botcazou @ 2002-12-05 12:06 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR optimization/8794; it has been noted by GNATS.
From: Eric Botcazou <ebotcazou@libertysurf.fr>
To: Paolo Carlini <pcarlini@unitus.it>
Cc: reichelt@igpm.rwth-aachen.de,
gcc-gnats@gcc.gnu.org,
gcc-prs@gcc.gnu.org,
pageexec@freemail.hu,
gcc-bugs@gcc.gnu.org,
nobody@gcc.gnu.org
Subject: Re: optimization/8794: [3.2/3.3 regression] optimization improperly eliminates certain expressions
Date: Thu, 5 Dec 2002 20:56:30 +0100
> Neither can I, with 3.3 20021204
Ok. I confirm that Jakub's patch is the fix.
--=20
Eric Botcazou
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: optimization/8794: [3.2/3.3 regression] optimization improperly eliminates certain expressions
@ 2002-12-06 0:56 Volker Reichelt
0 siblings, 0 replies; 5+ messages in thread
From: Volker Reichelt @ 2002-12-06 0:56 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR optimization/8794; it has been noted by GNATS.
From: Volker Reichelt <reichelt@igpm.rwth-aachen.de>
To: ebotcazou@libertysurf.fr, pcarlini@unitus.it
Cc: gcc-gnats@gcc.gnu.org, pageexec@freemail.hu, gcc-bugs@gcc.gnu.org
Subject: Re: optimization/8794: [3.2/3.3 regression] optimization improperly eliminates certain expressions
Date: Fri, 6 Dec 2002 10:41:30 +0100
Sorry for the confusion.
I checked mainline with the 20021118 snapshot where the bug was still
present. In the snapshot from 20021202 the bug is fixed.
Regards,
Volker
^ permalink raw reply [flat|nested] 5+ messages in thread
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2002-12-03 8:10 optimization/8794: [3.2/3.3 regression] optimization improperly eliminates certain expressions reichelt
2002-12-05 10:56 Eric Botcazou
2002-12-05 11:06 Paolo Carlini
2002-12-05 12:06 Eric Botcazou
2002-12-06 0:56 Volker Reichelt
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