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* [Bug tree-optimization/55176] New: [4.8 Regression] Out of memory during Chromium build
@ 2012-11-02 5:38 markus at trippelsdorf dot de
2012-11-02 7:18 ` [Bug middle-end/55176] " markus at trippelsdorf dot de
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: markus at trippelsdorf dot de @ 2012-11-02 5:38 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55176
Bug #: 55176
Summary: [4.8 Regression] Out of memory during Chromium build
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: markus@trippelsdorf.de
Created attachment 28595
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28595
testcase
If one compiles the attached testcase with "-02" or higher,
cc1plus will quickly run out of memory and eventually be killed
by the OOM killer.
% g++ -O2 -c exit.ii
g++: internal compiler error: Killed (program cc1plus)
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/55176] [4.8 Regression] Out of memory during Chromium build
2012-11-02 5:38 [Bug tree-optimization/55176] New: [4.8 Regression] Out of memory during Chromium build markus at trippelsdorf dot de
@ 2012-11-02 7:18 ` markus at trippelsdorf dot de
2012-11-02 8:10 ` markus at trippelsdorf dot de
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: markus at trippelsdorf dot de @ 2012-11-02 7:18 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55176
--- Comment #1 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-11-02 07:18:00 UTC ---
Reduced:
class Sandbox
{
void sandbox_exit ();
struct A
{
int write ();
};
void die ();
};
int a;
void
Sandbox::sandbox_exit ()
{
A b;
while (b.write () && 1)
if (a)
die ();
for (;;);
}
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/55176] [4.8 Regression] Out of memory during Chromium build
2012-11-02 5:38 [Bug tree-optimization/55176] New: [4.8 Regression] Out of memory during Chromium build markus at trippelsdorf dot de
2012-11-02 7:18 ` [Bug middle-end/55176] " markus at trippelsdorf dot de
@ 2012-11-02 8:10 ` markus at trippelsdorf dot de
2012-11-02 8:37 ` markus at trippelsdorf dot de
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: markus at trippelsdorf dot de @ 2012-11-02 8:10 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55176
--- Comment #2 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-11-02 08:09:51 UTC ---
This only happens when gcc was lto/profiledbootstraped.
Looks like it gets miscompiled in this case.
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/55176] [4.8 Regression] Out of memory during Chromium build
2012-11-02 5:38 [Bug tree-optimization/55176] New: [4.8 Regression] Out of memory during Chromium build markus at trippelsdorf dot de
2012-11-02 7:18 ` [Bug middle-end/55176] " markus at trippelsdorf dot de
2012-11-02 8:10 ` markus at trippelsdorf dot de
@ 2012-11-02 8:37 ` markus at trippelsdorf dot de
2012-11-02 8:53 ` markus at trippelsdorf dot de
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: markus at trippelsdorf dot de @ 2012-11-02 8:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55176
--- Comment #3 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-11-02 08:37:08 UTC ---
(In reply to comment #2)
> This only happens when gcc was lto/profiledbootstraped.
> Looks like it gets miscompiled in this case.
Turned out that "--enable-checking=release" is enough to trigger this bug.
% ~/gcc/configure --disable-bootstrap --disable-werror --disable-multilib
--enable-languages=c,c++ --enable-checking=release
% make
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/55176] [4.8 Regression] Out of memory during Chromium build
2012-11-02 5:38 [Bug tree-optimization/55176] New: [4.8 Regression] Out of memory during Chromium build markus at trippelsdorf dot de
` (2 preceding siblings ...)
2012-11-02 8:37 ` markus at trippelsdorf dot de
@ 2012-11-02 8:53 ` markus at trippelsdorf dot de
2012-11-02 15:14 ` markus at trippelsdorf dot de
2012-11-05 21:05 ` markus at trippelsdorf dot de
5 siblings, 0 replies; 7+ messages in thread
From: markus at trippelsdorf dot de @ 2012-11-02 8:53 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55176
Markus Trippelsdorf <markus at trippelsdorf dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |steven at gcc dot gnu.org
--- Comment #4 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-11-02 08:52:39 UTC ---
Started with r193047:
commit 9ccd9ece034984af0e6a775fdfb51b98a7029a84
Author: steven <steven@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Oct 31 21:37:10 2012 +0000
gcc/
PR tree-optimization/55018
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/55176] [4.8 Regression] Out of memory during Chromium build
2012-11-02 5:38 [Bug tree-optimization/55176] New: [4.8 Regression] Out of memory during Chromium build markus at trippelsdorf dot de
` (3 preceding siblings ...)
2012-11-02 8:53 ` markus at trippelsdorf dot de
@ 2012-11-02 15:14 ` markus at trippelsdorf dot de
2012-11-05 21:05 ` markus at trippelsdorf dot de
5 siblings, 0 replies; 7+ messages in thread
From: markus at trippelsdorf dot de @ 2012-11-02 15:14 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55176
--- Comment #5 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-11-02 15:13:48 UTC ---
Gcc is spinning in compute_antic (tree-ssa-pre.c:2507) calling
bitmap_set_new() until OOM:
#0 _int_malloc (av=0x7ffff794d600 <main_arena>, bytes=2408) at malloc.c:3694
#1 0x00007ffff7661700 in __GI___libc_malloc (bytes=2408) at malloc.c:2859
#2 0x0000000000cbc938 in xmalloc (size=<optimized out>) at
/home/markus/gcc/libiberty/xmalloc.c:147
#3 0x000000000060b561 in pool_alloc (pool=0x11a51e0) at
/home/markus/gcc/gcc/alloc-pool.c:282
#4 0x0000000000936c00 in bitmap_set_new () at
/home/markus/gcc/gcc/tree-ssa-pre.c:606
#5 0x000000000094065c in compute_antic_aux
(block_has_abnormal_pred_edge=<optimized out>, block=0x7ffff73d4d00) at
/home/markus/gcc/gcc/tree-ssa-pre.c:2161
#6 compute_antic () at /home/markus/gcc/gcc/tree-ssa-pre.c:2507
#7 do_pre () at /home/markus/gcc/gcc/tree-ssa-pre.c:4709
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug middle-end/55176] [4.8 Regression] Out of memory during Chromium build
2012-11-02 5:38 [Bug tree-optimization/55176] New: [4.8 Regression] Out of memory during Chromium build markus at trippelsdorf dot de
` (4 preceding siblings ...)
2012-11-02 15:14 ` markus at trippelsdorf dot de
@ 2012-11-05 21:05 ` markus at trippelsdorf dot de
5 siblings, 0 replies; 7+ messages in thread
From: markus at trippelsdorf dot de @ 2012-11-05 21:05 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55176
Markus Trippelsdorf <markus at trippelsdorf dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
--- Comment #6 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-11-05 21:05:07 UTC ---
dup
*** This bug has been marked as a duplicate of bug 55191 ***
^ permalink raw reply [flat|nested] 7+ messages in thread
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2012-11-02 5:38 [Bug tree-optimization/55176] New: [4.8 Regression] Out of memory during Chromium build markus at trippelsdorf dot de
2012-11-02 7:18 ` [Bug middle-end/55176] " markus at trippelsdorf dot de
2012-11-02 8:10 ` markus at trippelsdorf dot de
2012-11-02 8:37 ` markus at trippelsdorf dot de
2012-11-02 8:53 ` markus at trippelsdorf dot de
2012-11-02 15:14 ` markus at trippelsdorf dot de
2012-11-05 21:05 ` markus at trippelsdorf dot de
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