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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/55442] G++ uses up all my RAM when compiling a constexpr with exponential call graph
Date: Thu, 22 Nov 2012 17:01:00 -0000 [thread overview]
Message-ID: <bug-55442-4-XjjnHDf9zq@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-55442-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55442
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-11-22
CC| |hubicka at gcc dot gnu.org
Ever Confirmed|0 |1
--- Comment #1 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-11-22 17:01:08 UTC ---
This seems to be frontend issue
We spend a lot of time in
#102 0x000000000069ea86 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7676
#103 0x000000000069f869 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:6789
#104 0x000000000069f6ab in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7793
#105 0x000000000069f1b5 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7697
#106 0x00000000006a5b5f in cxx_eval_call_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) () at ../../gcc/cp/semantics.c:6676
#107 0x000000000069ea86 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7676
#108 0x00000000006a55b1 in cxx_eval_call_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) () at ../../gcc/cp/semantics.c:6489
#109 0x000000000069ea86 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7676
#110 0x000000000069f869 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:6789
#111 0x000000000069f6ab in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7793
#112 0x000000000069f1b5 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7697
#113 0x00000000006a5b5f in cxx_eval_call_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) () at ../../gcc/cp/semantics.c:6676
#114 0x000000000069ea86 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7676
#115 0x000000000069f869 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:6789
#116 0x000000000069f6ab in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7793
#117 0x000000000069f1b5 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7697
#118 0x00000000006a5b5f in cxx_eval_call_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) () at ../../gcc/cp/semantics.c:6676
#119 0x000000000069ea86 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7676
#120 0x000000000069f869 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:6789
#121 0x000000000069f6ab in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7793
#122 0x000000000069f1b5 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7697
#123 0x00000000006a5b5f in cxx_eval_call_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) () at ../../gcc/cp/semantics.c:6676
#124 0x000000000069ea86 in cxx_eval_constant_expression(constexpr_call const*,
tree_node*, bool, bool, bool*) [clone .part.62] () at
../../gcc/cp/semantics.c:7676
#125 0x00000000006a1c1d in cxx_eval_outermost_constant_expr(tree_node*, bool)
() at ../../gcc/cp/semantics.c:7976
#126 0x00000000006a2104 in maybe_constant_value(tree_node*) () at
../../gcc/cp/semantics.c:8080
#127 0x00000000006a2259 in maybe_constant_init(tree_node*) () at
../../gcc/cp/semantics.c:8097
#128 0x00000000005ba0f8 in store_init_value(tree_node*, tree_node*,
vec<tree_node*, va_gc, vl_embed>**, int) () at ../../gcc/cp/typeck2.c:717
#129 0x000000000053cca1 in check_initializer(tree_node*, tree_node*, int,
vec<tree_node*, va_gc, vl_embed>**) () at ../../gcc/cp/decl.c:5715
#130 0x000000000054f816 in cp_finish_decl(tree_node*, tree_node*, bool,
tree_node*, int) () at ../../gcc/cp/decl.c:6323
#131 0x0000000000628f44 in cp_parser_init_declarator(cp_parser*,
cp_decl_specifier_seq*, vec<deferred_access_check, va_gc, vl_embed>*, bool,
bool, int, bool*, tree_node**) ()
at ../../gcc/cp/parser.c:16006
#132 0x00000000006297bf in cp_parser_simple_declaration(cp_parser*, bool,
tree_node**) () at ../../gcc/cp/parser.c:10546
#133 0x000000000062b668 in cp_parser_block_declaration(cp_parser*, bool) () at
../../gcc/cp/parser.c:10427
#134 0x000000000062c731 in cp_parser_declaration_statement(cp_parser*) () at
../../gcc/cp/parser.c:10071
#135 0x0000000000614e18 in cp_parser_statement(cp_parser*, tree_node*, bool,
bool*) () at ../../gcc/cp/parser.c:8846
#136 0x00000000006160bf in cp_parser_statement_seq_opt(cp_parser*, tree_node*)
() at ../../gcc/cp/parser.c:9118
#137 0x0000000000616207 in cp_parser_compound_statement(cp_parser*, tree_node*,
bool, bool) () at ../../gcc/cp/parser.c:9072
#138 0x0000000000627714 in
cp_parser_ctor_initializer_opt_and_function_body(cp_parser*, bool) () at
../../gcc/cp/parser.c:17648
#139 0x00000000006287d0 in
cp_parser_function_definition_after_declarator(cp_parser*, bool) () at
../../gcc/cp/parser.c:21641
#140 0x00000000006293af in cp_parser_init_declarator(cp_parser*,
cp_decl_specifier_seq*, vec<deferred_access_check, va_gc, vl_embed>*, bool,
bool, int, bool*, tree_node**) ()
at ../../gcc/cp/parser.c:21562
#141 0x00000000006297bf in cp_parser_simple_declaration(cp_parser*, bool,
tree_node**) () at ../../gcc/cp/parser.c:10546
#142 0x000000000062b668 in cp_parser_block_declaration(cp_parser*, bool) () at
../../gcc/cp/parser.c:10427
#143 0x00000000006344ec in cp_parser_declaration(cp_parser*) () at
../../gcc/cp/parser.c:10324
#144 0x000000000063311e in cp_parser_declaration_seq_opt(cp_parser*) () at
../../gcc/cp/parser.c:10210
#145 0x0000000000634a63 in c_parse_file() () at ../../gcc/cp/parser.c:3792
#146 0x000000000073b465 in c_common_parse_file() ()
phase setup : 0.01 ( 0%) usr 0.01 ( 0%) sys 0.02 ( 0%) wall
1304 kB ( 0%) ggc
phase parsing : 80.67 (78%) usr 1.94 (97%) sys 82.60 (78%) wall
3423352 kB (100%) ggc
phase opt and generate : 23.22 (22%) usr 0.05 ( 3%) sys 23.27 (22%) wall
365 kB ( 0%) ggc
|name lookup : 0.09 ( 0%) usr 0.01 ( 0%) sys 0.08 ( 0%) wall
1038 kB ( 0%) ggc
|overload resolution : 0.02 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
151 kB ( 0%) ggc
garbage collection : 46.47 (45%) usr 0.05 ( 3%) sys 46.51 (44%) wall
0 kB ( 0%) ggc
callgraph optimization : 0.06 ( 0%) usr 0.00 ( 0%) sys 0.07 ( 0%) wall
19 kB ( 0%) ggc
ipa inlining heuristics : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
45 kB ( 0%) ggc
preprocessing : 0.00 ( 0%) usr 0.02 ( 1%) sys 0.03 ( 0%) wall
316 kB ( 0%) ggc
parser (global) : 0.11 ( 0%) usr 0.04 ( 2%) sys 0.12 ( 0%) wall
6727 kB ( 0%) ggc
parser struct body : 0.08 ( 0%) usr 0.00 ( 0%) sys 0.08 ( 0%) wall
2707 kB ( 0%) ggc
parser enumerator list : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
110 kB ( 0%) ggc
parser function body : 57.05 (55%) usr 1.85 (92%) sys 58.88 (56%) wall
3408859 kB (100%) ggc
parser inl. func. body : 0.01 ( 0%) usr 0.01 ( 0%) sys 0.02 ( 0%) wall
296 kB ( 0%) ggc
parser inl. meth. body : 0.02 ( 0%) usr 0.01 ( 0%) sys 0.06 ( 0%) wall
1090 kB ( 0%) ggc
template instantiation : 0.05 ( 0%) usr 0.01 ( 1%) sys 0.07 ( 0%) wall
3273 kB ( 0%) ggc
integration : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
11 kB ( 0%) ggc
tree operand scan : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
19 kB ( 0%) ggc
tree FRE : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
5 kB ( 0%) ggc
scheduling 2 : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
2 kB ( 0%) ggc
TOTAL : 103.90 2.00 105.89
3425092 kB
prev parent reply other threads:[~2012-11-22 17:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-22 16:28 [Bug c++/55442] New: " david at aitellu dot com
2012-11-22 17:01 ` hubicka at gcc dot gnu.org [this message]
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