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* [Bug c++/19876] New: g++ starts eating all the memory and the CPU
@ 2005-02-10 21:04 pied at fnux dot org
2005-02-10 21:10 ` [Bug c++/19876] " pinskia at gcc dot gnu dot org
` (8 more replies)
0 siblings, 9 replies; 10+ messages in thread
From: pied at fnux dot org @ 2005-02-10 21:04 UTC (permalink / raw)
To: gcc-bugs
Hi
I'm developing a linux distribution with friends, and we decided to use gcc 4.
A few days ago, KDE 3.3.92 was released.
But it doesn't compile :( Especially, with the kdepim package, g++ starts
eating all the memory and all the CPU on a file.
I can't submit this file because it relies on a lot of headers and libs from
KDE and Qt so it would be to heavy.
Here is the command line :
if /bin/sh ../libtool --silent --mode=compile --tag=CXX g++ -DHAVE_CONFIG_H
-I. -I. -I.. -I../libkmime -I../libkpgp -I../libkdenetwork -I../libkdepim
-I../libkpimidentities -I../libemailfunctions -I../libksieve -I../mimelib
-I../certmanager/lib -I.. -I../libkdepim -I/usr/lib/qt3/include
-I/usr/X11R6/include -DQT_THREAD_SUPPORT -D_REENTRANT
-D_FILE_OFFSET_BITS=64 -Wnon-virtual-dtor -Wno-long-long -Wundef -ansi
-D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -Wchar-subscripts
-Wall -W -Wpointer-arith -Wwrite-strings -O2 -Wformat-security
-Wmissing-format-attribute -fno-exceptions -fno-check-new -fno-common
-DQT_CLEAN_NAMESPACE -DQT_NO_ASCII_CAST -DQT_NO_STL -DQT_NO_COMPAT
-DQT_NO_TRANSLATION -MT globalsettings.lo -MD -MP -MF
".deps/globalsettings.Tpo" -c -o globalsettings.lo globalsettings.cpp; \
then mv -f ".deps/globalsettings.Tpo" ".deps/globalsettings.Plo"; else rm -f
".deps/globalsettings.Tpo"; exit 1; fi
Configure of gcc :
../gcc-4.0-20050130/configure --prefix=/usr --libexecdir=/usr/lib
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --enable-languages=c,c++,java,objc --with-libffi
--enable-libffi
I reported the bug on bugs.kde.org too :
http://bugs.kde.org/show_bug.cgi?id=99045
Thanks
--
Summary: g++ starts eating all the memory and the CPU
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pied at fnux dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19876
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/19876] g++ starts eating all the memory and the CPU
2005-02-10 21:04 [Bug c++/19876] New: g++ starts eating all the memory and the CPU pied at fnux dot org
@ 2005-02-10 21:10 ` pinskia at gcc dot gnu dot org
2005-02-10 21:13 ` pied at fnux dot org
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-02-10 21:10 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-02-10 18:06 -------
Did you read <http://gcc.gnu.org/bugs.html>. We need the preprocessed source.
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|critical |normal
Keywords| |memory-hog
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19876
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug middle-end/19876] [4.0 Regression] g++ starts eating all the memory and the CPU
2005-02-10 21:04 [Bug c++/19876] New: g++ starts eating all the memory and the CPU pied at fnux dot org
2005-02-10 21:10 ` [Bug c++/19876] " pinskia at gcc dot gnu dot org
2005-02-10 21:13 ` pied at fnux dot org
@ 2005-02-10 21:13 ` pinskia at gcc dot gnu dot org
2005-02-10 21:28 ` [Bug tree-optimization/19876] " pinskia at gcc dot gnu dot org
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-02-10 21:13 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-02-10 18:30 -------
Ok, I can confirm this with the following options on powerpc-darwin (which means it is most likely a
tree optimizator problem but I could be wrong).
-fno-exceptions -fno-check-new -fno-common -O2
It worked in 3.3.2 so this is a regression.
--
What |Removed |Added
----------------------------------------------------------------------------
Component|c++ |middle-end
Known to fail| |4.0.0
Known to work| |3.3.2
Summary|g++ starts eating all the |[4.0 Regression] g++ starts
|memory and the CPU |eating all the memory and
| |the CPU
Target Milestone|--- |4.0.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19876
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/19876] g++ starts eating all the memory and the CPU
2005-02-10 21:04 [Bug c++/19876] New: g++ starts eating all the memory and the CPU pied at fnux dot org
2005-02-10 21:10 ` [Bug c++/19876] " pinskia at gcc dot gnu dot org
@ 2005-02-10 21:13 ` pied at fnux dot org
2005-02-10 21:13 ` [Bug middle-end/19876] [4.0 Regression] " pinskia at gcc dot gnu dot org
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pied at fnux dot org @ 2005-02-10 21:13 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pied at fnux dot org 2005-02-10 18:13 -------
Created an attachment (id=8162)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8162&action=view)
The prepocessed source
I'm sorry, really sorry !
I generated the file, but forget to send it :/
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19876
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/19876] [4.0 Regression] g++ starts eating all the memory and the CPU
2005-02-10 21:04 [Bug c++/19876] New: g++ starts eating all the memory and the CPU pied at fnux dot org
` (2 preceding siblings ...)
2005-02-10 21:13 ` [Bug middle-end/19876] [4.0 Regression] " pinskia at gcc dot gnu dot org
@ 2005-02-10 21:28 ` pinskia at gcc dot gnu dot org
2005-02-10 22:09 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-02-10 21:28 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-02-10 18:35 -------
PRE is eating up a huge amount of memory.
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |dberlin at gcc dot gnu dot
| |org, pinskia at gcc dot gnu
| |dot org
Component|middle-end |tree-optimization
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19876
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/19876] [4.0 Regression] g++ starts eating all the memory and the CPU
2005-02-10 21:04 [Bug c++/19876] New: g++ starts eating all the memory and the CPU pied at fnux dot org
` (3 preceding siblings ...)
2005-02-10 21:28 ` [Bug tree-optimization/19876] " pinskia at gcc dot gnu dot org
@ 2005-02-10 22:09 ` pinskia at gcc dot gnu dot org
2005-02-10 22:13 ` dberlin at gcc dot gnu dot org
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-02-10 22:09 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-02-10 19:04 -------
Reverting the following patch fixes the bug:
2005-01-14 Steven Bosscher <stevenb@suse.de>
* tree-ssa-dce.c (visited_control_parents): New sbitmap to
replace BB_VISITED uses.
(find_obviously_necessary_stmts): Don't clear BB_VISITED.
(propagate_necessity): Check the bitmap instead of BB_VISITED.
(tree_dce_done): Free visited_control_parents.
(perform_tree_ssa_dce): Allocate and clear it.
* tree-ssa-pre.c (compute_antic_aux): Make non-recursive.
(compute_antic): Iterate from here using a DFS. Use an sbitmap
instead of BB_VISITED.
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |steven at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2005-02-10 19:04:05
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19876
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/19876] [4.0 Regression] g++ starts eating all the memory and the CPU
2005-02-10 21:04 [Bug c++/19876] New: g++ starts eating all the memory and the CPU pied at fnux dot org
` (4 preceding siblings ...)
2005-02-10 22:09 ` pinskia at gcc dot gnu dot org
@ 2005-02-10 22:13 ` dberlin at gcc dot gnu dot org
2005-02-10 22:28 ` steven at gcc dot gnu dot org
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: dberlin at gcc dot gnu dot org @ 2005-02-10 22:13 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From dberlin at gcc dot gnu dot org 2005-02-10 19:06 -------
Pinski is correct (i know because i told him that was the cause :P)
It no longer converges (i suspect some strange bug in your logic).
Before it converged in 2 iterations.
I stopped it at 958 iterations because i was running out of memory.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19876
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/19876] [4.0 Regression] g++ starts eating all the memory and the CPU
2005-02-10 21:04 [Bug c++/19876] New: g++ starts eating all the memory and the CPU pied at fnux dot org
` (5 preceding siblings ...)
2005-02-10 22:13 ` dberlin at gcc dot gnu dot org
@ 2005-02-10 22:28 ` steven at gcc dot gnu dot org
2005-02-12 8:00 ` cvs-commit at gcc dot gnu dot org
2005-02-12 8:11 ` steven at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: steven at gcc dot gnu dot org @ 2005-02-10 22:28 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From steven at gcc dot gnu dot org 2005-02-10 19:15 -------
I'll look into it.
--
What |Removed |Added
----------------------------------------------------------------------------
CC|steven at gcc dot gnu dot |
|org |
AssignedTo|unassigned at gcc dot gnu |steven at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
Last reconfirmed|2005-02-10 19:04:05 |2005-02-10 19:15:22
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19876
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/19876] [4.0 Regression] g++ starts eating all the memory and the CPU
2005-02-10 21:04 [Bug c++/19876] New: g++ starts eating all the memory and the CPU pied at fnux dot org
` (6 preceding siblings ...)
2005-02-10 22:28 ` steven at gcc dot gnu dot org
@ 2005-02-12 8:00 ` cvs-commit at gcc dot gnu dot org
2005-02-12 8:11 ` steven at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-02-12 8:00 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-02-11 21:52 -------
Subject: Bug 19876
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: steven@gcc.gnu.org 2005-02-11 21:52:39
Modified files:
gcc : ChangeLog tree-ssa-pre.c
Log message:
PR tree-optimization/19876
Partially revert my change from 2005-01-14
* tree-ssa-pre.c (compute_antic_aux): Make recursive once again...
(compute_antic): ...and remove the loop here.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.7450&r2=2.7451
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-pre.c.diff?cvsroot=gcc&r1=2.63&r2=2.64
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19876
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/19876] [4.0 Regression] g++ starts eating all the memory and the CPU
2005-02-10 21:04 [Bug c++/19876] New: g++ starts eating all the memory and the CPU pied at fnux dot org
` (7 preceding siblings ...)
2005-02-12 8:00 ` cvs-commit at gcc dot gnu dot org
@ 2005-02-12 8:11 ` steven at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: steven at gcc dot gnu dot org @ 2005-02-12 8:11 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From steven at gcc dot gnu dot org 2005-02-11 21:56 -------
Should be fixed now. Bash me if it is not.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19876
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2005-02-11 21:56 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
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2005-02-10 21:04 [Bug c++/19876] New: g++ starts eating all the memory and the CPU pied at fnux dot org
2005-02-10 21:10 ` [Bug c++/19876] " pinskia at gcc dot gnu dot org
2005-02-10 21:13 ` pied at fnux dot org
2005-02-10 21:13 ` [Bug middle-end/19876] [4.0 Regression] " pinskia at gcc dot gnu dot org
2005-02-10 21:28 ` [Bug tree-optimization/19876] " pinskia at gcc dot gnu dot org
2005-02-10 22:09 ` pinskia at gcc dot gnu dot org
2005-02-10 22:13 ` dberlin at gcc dot gnu dot org
2005-02-10 22:28 ` steven at gcc dot gnu dot org
2005-02-12 8:00 ` cvs-commit at gcc dot gnu dot org
2005-02-12 8:11 ` steven at gcc dot gnu dot org
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