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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/54704] [4.8 Regression] three-fold increase in compile-time between r191483 and r191569
Date: Tue, 25 Sep 2012 14:38:00 -0000 [thread overview]
Message-ID: <bug-54704-4-IUc8L4oZZr@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-54704-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54704
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-09-25
Ever Confirmed|0 |1
--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-09-25 14:37:55 UTC ---
hashtable collisions are an issue (-O1 -fpermissive, break on htab expand).
The last expansion shows:
Breakpoint 1, get_combined_adhoc_loc (set=0x7ffff7ff9000,
locus=<optimized out>, data=<optimized out>)
at /space/rguenther/tramp3d/trunk/libcpp/line-map.c:139
139 location_adhoc_data_update, &offset);
(gdb) p *set->location_adhoc_data_map.htab
$16 = {hash_f = 0xef2a50 <location_adhoc_data_hash(void const*)>,
eq_f = 0xef2a60 <location_adhoc_data_eq(void const*, void const*)>,
del_f = 0x0, entries = 0x221b650, size = 262139, n_elements = 131073,
n_deleted = 0, searches = 211955, collisions = 160177370,
alloc_f = 0xf1d320 <xcalloc>, free_f = 0x4e0570 <free@plt>, alloc_arg = 0x0,
alloc_with_arg_f = 0x0, free_with_arg_f = 0x0, size_prime_index = 15}
next prev parent reply other threads:[~2012-09-25 14:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-25 14:05 [Bug middle-end/54704] New: " rguenth at gcc dot gnu.org
2012-09-25 14:07 ` [Bug middle-end/54704] " rguenth at gcc dot gnu.org
2012-09-25 14:10 ` [Bug middle-end/54704] [4.8 Regression] " rguenth at gcc dot gnu.org
2012-09-25 14:38 ` rguenth at gcc dot gnu.org [this message]
2012-09-25 14:41 ` rguenth at gcc dot gnu.org
2012-09-25 14:58 ` rguenth at gcc dot gnu.org
2012-09-25 15:02 ` rguenth at gcc dot gnu.org
2012-09-25 19:35 ` dehao at google dot com
2012-09-25 21:33 ` dehao at gcc dot gnu.org
2012-09-26 9:03 ` rguenth at gcc dot gnu.org
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