[Bug middle-end/47344] New: [4.3/4.4/4.5/4.6 Regression][meta-bug] GCC gets slower and uses more memory

[Bug middle-end/47344] New: [4.3/4.4/4.5/4.6 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

           Summary: [4.3/4.4/4.5/4.6 Regression][meta-bug] GCC gets slower
                    and uses more memory
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Keywords: compile-time-hog, memory-hog
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: rguenth@gcc.gnu.org
        Depends on: 18687,26854


This is a meta-bug for old(!) compile-time and memory-usage regressions that
we keep not closing for whatever reason and that are present on all active
branches.

Those bugs got their regression markers removed now and instead are liked from
this single regression bug.

[Bug middle-end/47344] [4.3/4.4/4.5/4.6 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.01.18 14:20:10
   Target Milestone|---                         |4.3.6
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-01-18 14:20:10 UTC ---
Confirmed.

[Bug middle-end/47344] [4.3/4.4/4.5/4.6 Regression][meta-bug] GCC gets slower and uses more memory

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2
                 CC|                            |jakub at gcc dot gnu.org

[Bug middle-end/47344] [4.3/4.4/4.5/4.6/4.7 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.3.6                       |4.4.7

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-06-27 12:14:12 UTC ---
4.3 branch is being closed, moving to 4.4.7 target.

[Bug middle-end/47344] [4.4/4.5/4.6/4.7 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |34983
                 CC|                            |mariobonino@ubuntu-it.org

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-11-07 09:13:10 UTC ---
*** Bug 34983 has been marked as a duplicate of this bug. ***

[Bug middle-end/47344] [4.4/4.5/4.6/4.7 Regression][meta-bug] GCC gets slower and uses more memory

[xiaoyuanbo at yeah dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

xiaoyuanbo <xiaoyuanbo at yeah dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |xiaoyuanbo at yeah dot net

--- Comment #4 from xiaoyuanbo <xiaoyuanbo at yeah dot net> 2012-02-22 12:54:14 UTC ---
class a{int i;}ai;

[Bug middle-end/47344] [4.5/4.6/4.7/4.8 Regression][meta-bug] GCC gets slower and uses more memory

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.4.7                       |4.5.4

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-03-13 12:47:29 UTC ---
4.4 branch is being closed, moving to 4.5.4 target.

[Bug middle-end/47344] [4.5/4.6/4.7/4.8 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.5.4                       |4.6.4

--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-02 11:30:20 UTC ---
The 4.5 branch is being closed, adjusting target milestone.

[Bug middle-end/47344] [4.6/4.7/4.8 Regression][meta-bug] GCC gets slower and uses more memory

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

--- Comment #7 from Steven Bosscher <steven at gcc dot gnu.org> 2013-03-06 10:51:27 UTC ---
This bug looks like the wrong idea to me. Old is apparently anything
older than the maintained release branches, but many users "in the field"
still use older compilers that come with their respective distributions.

For instance a regresion that is present since GCC 4.6 but not in GCC 4.5
gets reduced in importance and visibility by not marking it as regression
and instead only adding it to this grab-a-bag PR. Example of such a case
is bug 53958.

This is a change of old existing policy that any regression should be
marked as such. This policy change should have been discussed (and IMHO
rejected) on the GCC mailing list.

Also, this meta-bug depends on not-so-old regressions, so it's already
more like a collection of compile/memory hog issues than a collection
point for apparently "unimportant" regressions.

[Bug middle-end/47344] [4.6/4.7/4.8 Regression][meta-bug] GCC gets slower and uses more memory

[rguenther at suse dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

--- Comment #8 from rguenther at suse dot de <rguenther at suse dot de> 2013-03-06 10:57:15 UTC ---
On Wed, 6 Mar 2013, steven at gcc dot gnu.org wrote:

> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344
> 
> --- Comment #7 from Steven Bosscher <steven at gcc dot gnu.org> 2013-03-06 10:51:27 UTC ---
> This bug looks like the wrong idea to me. Old is apparently anything
> older than the maintained release branches, but many users "in the field"
> still use older compilers that come with their respective distributions.
> 
> For instance a regresion that is present since GCC 4.6 but not in GCC 4.5
> gets reduced in importance and visibility by not marking it as regression
> and instead only adding it to this grab-a-bag PR. Example of such a case
> is bug 53958.
> 
> This is a change of old existing policy that any regression should be
> marked as such. This policy change should have been discussed (and IMHO
> rejected) on the GCC mailing list.
> 
> Also, this meta-bug depends on not-so-old regressions, so it's already
> more like a collection of compile/memory hog issues than a collection
> point for apparently "unimportant" regressions.

All these regressions clutter the list of important regressions.
All of them are present in more or less severe form in all maintained
branches.

There is a similar issue for missed-optimization regressions that
are long-standing.

[Bug middle-end/47344] [4.6/4.7/4.8 Regression][meta-bug] GCC gets slower and uses more memory

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Steven Bosscher <steven at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |steven at gcc dot gnu.org

--- Comment #9 from Steven Bosscher <steven at gcc dot gnu.org> 2013-03-06 12:01:27 UTC ---
(In reply to comment #8)
> All these regressions clutter the list of important regressions.

And why would all of these not be important?
Hiding a problem is not solving the problem.

And it always was policy that a regression should be marked as such. If
it is not important enough, you can set its priority to P4 or P5, but we
should never remove the regression marker.

See http://gcc.gnu.org/ml/gcc/2007-12/msg00550.html

[Bug middle-end/47344] [4.6/4.7/4.8 Regression][meta-bug] GCC gets slower and uses more memory

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-03-06 12:07:28 UTC ---
I agree with Richard here, it isn't that much hidden, simplifies RM tasks and
allows us to actually release the compiler in roughly timely manner.

[Bug middle-end/47344] [4.6/4.7/4.8 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-06 12:11:38 UTC ---
(In reply to comment #9)
> (In reply to comment #8)
> > All these regressions clutter the list of important regressions.
> 
> And why would all of these not be important?
> Hiding a problem is not solving the problem.
> 
> And it always was policy that a regression should be marked as such. If
> it is not important enough, you can set its priority to P4 or P5, but we
> should never remove the regression marker.
> 
> See http://gcc.gnu.org/ml/gcc/2007-12/msg00550.html

Well, the issue with these kind of testcases / bugs is that we cannot
easily mark them as dups of each other because nobody separates the
issues the testcases show into separate bugreports (which could be
individually marked as regression).  So the bugs tend to stay open
forever, with much confusion as to what issue (still) exists or has
popped up again or new.

Tracking the testcases so we see when they regress again is important
(and gcc.opensuse.org/c++bench/random is just a lame attempt, because
C++ issues keep breaking testcases and because the machine has not
enough memory to keep up with the task - and the scripting is lame, too ;))

I realize this meta-bug is a bad attempt at making the important regression
numbers look better ;)

[Bug middle-end/47344] [4.7/4.8/4.9 Regression][meta-bug] GCC gets slower and uses more memory

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.6.4                       |4.7.4

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-12 15:16:51 UTC ---
GCC 4.6.4 has been released and the branch has been closed.

[Bug middle-end/47344] [4.7/4.8/4.9/4.10 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344
Bug 47344 depends on bug 56490, which changed state.

Bug 56490 Summary: [4.7 Regression] -Wall triggering infinite loop
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56490

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

[Bug middle-end/47344] [4.7/4.8/4.9/4.10 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.7.4                       |4.8.4

--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
The 4.7 branch is being closed, moving target milestone to 4.8.4.

[Bug middle-end/47344] [4.8/4.9/5 Regression][meta-bug] GCC gets slower and uses more memory

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.8.4                       |4.8.5

--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 4.8.4 has been released.

[Bug middle-end/47344] [4.8/4.9/5/6 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.8.5                       |4.9.3

--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
The gcc-4_8-branch is being closed, re-targeting regressions to 4.9.3.

[Bug middle-end/47344] [4.9/5/6 Regression][meta-bug] GCC gets slower and uses more memory

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 4.9.3 has been released.

[Bug middle-end/47344] [4.9/5/6 Regression][meta-bug] GCC gets slower and uses more memory

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.9.3                       |4.9.4

[Bug middle-end/47344] [9/10/11/12 Regression][meta-bug] GCC gets slower and uses more memory

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|8.5                         |9.4

--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8 branch is being closed.

[Bug middle-end/47344] [9/10/11/12 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|9.4                         |9.5

--- Comment #23 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9.4 is being released, retargeting bugs to GCC 9.5.

[Bug middle-end/47344] [10/11/12/13 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|9.5                         |10.4

--- Comment #24 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9 branch is being closed

[Bug middle-end/47344] [10/11/12/13 Regression][meta-bug] GCC gets slower and uses more memory

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|10.4                        |10.5

--- Comment #25 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 10.4 is being released, retargeting bugs to GCC 10.5.

[Bug middle-end/47344] [11/12/13/14 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|10.5                        |11.5

--- Comment #26 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10 branch is being closed.

[Bug middle-end/47344] [11/12/13/14 Regression][meta-bug] GCC gets slower and uses more memory

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47344
Bug 47344 depends on bug 34983, which changed state.

Bug 34983 Summary: i486-linux-gnu-g++: Internal error: Killed (program cc1plus)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=34983

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED