http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #32 from Steven Bosscher steven at gcc dot gnu.org 2012-07-31
09:21:03 UTC ---
Author: steven
Date: Tue Jul 31 09:20:56 2012
New Revision: 18
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=18
Log:
PR pch/53880
*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
Steven Bosscher steven at gcc dot gnu.org changed:
What|Removed |Added
Known to fail|4.8.0 |
--- Comment
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
Markus Trippelsdorf markus at trippelsdorf dot de changed:
What|Removed |Added
Status|ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
Steven Bosscher steven at gcc dot gnu.org changed:
What|Removed |Added
Status|NEW |WAITING
---
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #22 from Markus Trippelsdorf markus at trippelsdorf dot de
2012-07-30 10:54:35 UTC ---
(In reply to comment #21)
Markus, I think that r189951 should have fixed this problem (xf.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #23 from Steven Bosscher steven at gcc dot gnu.org 2012-07-30
11:08:01 UTC ---
(In reply to comment #22)
Still a 98% compile time regression on todays trunk.
What revision number is this? If it includes r189951, could you please see
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #24 from Markus Trippelsdorf markus at trippelsdorf dot de
2012-07-30 11:21:54 UTC ---
(In reply to comment #23)
(In reply to comment #22)
Still a 98% compile time regression on todays trunk.
What revision number is this? If it
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
Steven Bosscher steven at gcc dot gnu.org changed:
What|Removed |Added
Status|WAITING |NEW
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #26 from Steven Bosscher steven at gcc dot gnu.org 2012-07-30
13:17:25 UTC ---
FWIW, the resulting PCH for GCC 4.8 is more than twice as large as the PCH for
GCC 4.7.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #27 from Steven Bosscher steven at gcc dot gnu.org 2012-07-30
13:51:58 UTC ---
The problem is the quadratic behavior invoked by the loop in
gt_pch_nx_line_maps:
{
size_t l2 = (size_t)(((*x).info_macro).used);
if
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #28 from Steven Bosscher steven at gcc dot gnu.org 2012-07-30
14:22:37 UTC ---
With -ftrack-macro-expansion=2 (the default):
(gdb) call dump_line_table_statistics()
Number of expanded macros: 237994
Average number
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #29 from Steven Bosscher steven at gcc dot gnu.org 2012-07-30
15:04:18 UTC ---
Created attachment 27897
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=27897
Unswitched gtype-desc.c at r189965
Manually unswitching
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #30 from Steven Bosscher steven at gcc dot gnu.org 2012-07-30
16:15:35 UTC ---
Created attachment 27898
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=27898
Hack to avoid quadratic loops
This makes use of the assumption that
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #31 from Markus Trippelsdorf markus at trippelsdorf dot de
2012-07-30 16:26:23 UTC ---
(In reply to comment #30)
Created attachment 27898 [details]
Hack to avoid quadratic loops
This makes use of the assumption that this_obj and
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
Steven Bosscher steven at gcc dot gnu.org changed:
What|Removed |Added
Keywords|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #15 from dodji at seketeli dot org dodji at seketeli dot org
2012-07-26 16:30:33 UTC ---
paolo.carlini at oracle dot com gcc-bugzi...@gcc.gnu.org a écrit:
--- Comment #4 from Paolo Carlini paolo.carlini at oracle dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #16 from dodji at seketeli dot org dodji at seketeli dot org
2012-07-26 17:15:15 UTC ---
rguenth at gcc dot gnu.org gcc-bugzi...@gcc.gnu.org a écrit:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #10 from Richard
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #16 from dodji at seketeli dot org dodji at seketeli dot org
2012-07-26 17:15:15 UTC ---
rguenth at gcc dot gnu.org gcc-bugzi...@gcc.gnu.org a écrit:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #10 from Richard
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #17 from dodji at seketeli dot org dodji at seketeli dot org
2012-07-26 17:15:43 UTC ---
--- Comment #14 from Paolo Carlini paolo.carlini at oracle dot com
2012-07-24 10:13:24 UTC ---
Thanks Steven for looking into this!
Indeed,
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #18 from dodji at seketeli dot org dodji at seketeli dot org
2012-07-26 17:18:34 UTC ---
--- Comment #13 from stevenb.gcc at gmail dot com stevenb.gcc at gmail dot
com 2012-07-24 10:03:05 UTC ---
On Tue, Jul 24, 2012 at 11:42 AM,
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #19 from stevenb.gcc at gmail dot com stevenb.gcc at gmail dot
com 2012-07-26 19:44:59 UTC ---
Dodji, please see http://gcc.gnu.org/ml/gcc-patches/2012-07/msg01204.html
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #20 from dodji at seketeli dot org dodji at seketeli dot org
2012-07-26 21:11:16 UTC ---
stevenb.gcc at gmail dot com gcc-bugzi...@gcc.gnu.org a écrit:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #19 from
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #7 from Markus Trippelsdorf markus at trippelsdorf dot de
2012-07-24 06:49:57 UTC ---
(In reply to comment #5)
What are the callers of gt_pch_p_9line_maps?
It is only called from gt_pch_nx_line_maps of ./gcc/gtype-desc.c
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #8 from stevenb.gcc at gmail dot com stevenb.gcc at gmail dot com
2012-07-24 08:16:01 UTC ---
(In reply to comment #7)
I don't think it's really called from there. It should be called from
gt_pch_save. gt_pch_nx_line_maps only
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #9 from Steven Bosscher steven at gcc dot gnu.org 2012-07-24
09:20:14 UTC ---
(In reply to comment #1)
Boost version is 1.49.
(When I use --save-temps and use the resulting .ii file instead, the
regression
is no longer
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #10 from Richard Guenther rguenth at gcc dot gnu.org 2012-07-24
09:34:21 UTC ---
Err, isn't the GTY annotation in
as y1. x0 is the spelling location for the argument token 1,
and x2 is the spelling location for the
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #11 from stevenb.gcc at gmail dot com stevenb.gcc at gmail dot
com 2012-07-24 09:41:18 UTC ---
Err, isn't the GTY annotation in
as y1. x0 is the spelling location for the argument token 1,
and x2 is the spelling
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #12 from Richard Guenther rguenth at gcc dot gnu.org 2012-07-24
09:42:53 UTC ---
(In reply to comment #11)
Err, isn't the GTY annotation in
as y1. x0 is the spelling location for the argument token 1,
and x2 is the
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #13 from stevenb.gcc at gmail dot com stevenb.gcc at gmail dot
com 2012-07-24 10:03:05 UTC ---
On Tue, Jul 24, 2012 at 11:42 AM, rguenth at gcc dot gnu.org
gcc-bugzi...@gcc.gnu.org wrote:
The pointer to the array, but not the array
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #14 from Paolo Carlini paolo.carlini at oracle dot com 2012-07-24
10:13:24 UTC ---
Thanks Steven for looking into this!
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
Paolo Carlini paolo.carlini at oracle dot com changed:
What|Removed |Added
CC|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
Steven Bosscher steven at gcc dot gnu.org changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #6 from Steven Bosscher steven at gcc dot gnu.org 2012-07-23
22:46:19 UTC ---
FWIW this shows up in GCC's own libstdc++ PCHs also.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
Richard Guenther rguenth at gcc dot gnu.org changed:
What|Removed |Added
Target Milestone|--- |4.8.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #3 from Markus Trippelsdorf markus at trippelsdorf dot de
2012-07-08 07:08:13 UTC ---
Unfortunately jimis' patch from Bug 53525 doesn't help much:
c++ -c -o pch.hpp.gch /usr/include/boost/math/special_functions.hpp 156.69s
user
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
--- Comment #1 from Markus Trippelsdorf markus at trippelsdorf dot de
2012-07-06 15:54:43 UTC ---
Boost version is 1.49.
(When I use --save-temps and use the resulting .ii file instead, the regression
is no longer reproducible)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880
Markus Trippelsdorf markus at trippelsdorf dot de changed:
What|Removed |Added
CC||dodji
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