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From: "markus at trippelsdorf dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/56671] Gcc uses large amounts of memory and processor power with large C++11 bitsets
Date: Thu, 21 Mar 2013 08:32:00 -0000 [thread overview]
Message-ID: <bug-56671-4-X8SqxtXCcF@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-56671-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56671
--- Comment #1 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2013-03-21 08:31:57 UTC ---
Created attachment 29703
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29703
callgraph
Looks like a bug in constant expression handling.
perf shows:
15.51% cc1plus cc1plus [.] gt_ggc_mx_lang_tree_node(void*)
11.14% cc1plus cc1plus [.] walk_tree_1(tree_node**, tree_node*
(*)(tree_node**, int*, void*), void*, pointer_set_t*, tree_node*
(*)(tree_node**, int*, tree_no
9.54% cc1plus cc1plus [.] htab_expand.1557810
7.28% cc1plus cc1plus [.] ggc_set_mark(void const*)
6.35% cc1plus cc1plus [.] lookup_page_table_entry(void const*)
[clone .218759]
6.32% cc1plus cc1plus [.] build_int_cst(tree_node*, long)
5.07% cc1plus [kernel.kallsyms] [k] clear_page_c
3.60% cc1plus cc1plus [.]
initializer_constant_valid_p_1(tree_node*, tree_node*, tree_node**) [clone
.1222026]
3.46% cc1plus cc1plus [.] mostly_copy_tree_r(tree_node**, int*,
void*) [clone .459380]
2.57% cc1plus cc1plus [.] gt_ggc_mx(constructor_elt_d&)
2.21% cc1plus cc1plus [.] vec<constructor_elt_d, va_gc,
vl_embed>::copy() const [clone .local.823]
1.97% cc1plus cc1plus [.] int_cst_hash_hash(void const*) [clone
.1202876]
1.94% cc1plus cc1plus [.] cxx_eval_vec_init_1(constexpr_call
const*, tree_node*, tree_node*, bool, bool, bool, bool*, bool*) [clone
.109131.20812]
cxx_eval_outermost_constant_expr -> cxx_eval_constant_expression ->
-> cxx_eval_vec_init_1 -> build_int_cst
(see attached callgraph)
next prev parent reply other threads:[~2013-03-21 8:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-21 1:34 [Bug c++/56671] New: " m101010a at gmail dot com
2013-03-21 8:32 ` markus at trippelsdorf dot de [this message]
2013-09-10 19:02 ` [Bug c++/56671] " tudorb at fb dot com
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