[Bug c++/29433] using boost::MPL requires lots of memory
rguenth at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Thu Oct 12 08:20:00 GMT 2006
------- Comment #6 from rguenth at gcc dot gnu dot org 2006-10-12 08:20 -------
Execution times (seconds)
garbage collection : 0.88 ( 1%) usr 0.00 ( 0%) sys 0.87 ( 1%) wall
0 kB ( 0%) ggc
preprocessing : 0.10 ( 0%) usr 0.04 ( 1%) sys 0.22 ( 0%) wall
796 kB ( 0%) ggc
parser : 17.90 (14%) usr 0.77 (15%) sys 19.39 (15%) wall
325217 kB (64%) ggc
name lookup : 94.51 (76%) usr 4.25 (84%) sys 98.43 (75%) wall
175474 kB (34%) ggc
tree gimplify : 0.07 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall
2548 kB ( 1%) ggc
varconst : 11.33 ( 9%) usr 0.01 ( 0%) sys 11.33 ( 9%) wall
2833 kB ( 1%) ggc
symout : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
32 kB ( 0%) ggc
TOTAL : 124.80 5.08 130.45
508745 kB
and using peak 1.7GB ram (x86_64 with -m32) on the trunk. I guess we're just
not collecting garbage during parsing at all.
Note that I get errors from compiling the testcase though:
[... very large template ...]
test_basic_metafunctions.hpp:176: instantiated from here
../src/sd/../static_component.hpp:91: error: 'process_outputs' is not a member
of 'mpl_::void_'
(4.1 also isn't happy with the testcase)
Can you by any chance provide a testcase that compiles ok with at least gcc
4.1.x? (even better mainline...) Thanks!
Profiling the bugger yields:
Flat profile:
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls Ks/call Ks/call name
12.44 178.30 178.30 121375686 0.00 0.00 comptypes
9.29 311.48 133.18 218375227 0.00 0.00 dump_aggr_type
8.69 436.02 124.54 155559998 0.00 0.00 comp_template_args
8.59 559.19 123.17 620924334 0.00 0.00 pp_base_append_text
7.85 671.72 112.53 1278486 0.00 0.00 retrieve_specialization
6.92 770.99 99.27 173585104 0.00 0.00 template_args_equal
6.54 864.80 93.81 462049326 0.00 0.00 pp_base_character
5.05 937.24 72.44 67358 0.00 0.00 ht_lookup
3.32 984.79 47.55 620924334 0.00 0.00 pp_base_string
3.13 1029.71 44.92 186232097 0.00 0.00 dump_decl
2.58 1066.65 36.95 218532269 0.00 0.00 pp_c_type_qualifier_list
2.36 1100.46 33.81 16289532 0.00 0.00 dump_template_parms
2.32 1133.71 33.25 404449103 0.00 0.00 dump_scope
2.28 1166.40 32.69 218677178 0.00 0.00 dump_type
1.95 1194.40 28.00 404642903 0.00 0.00 pp_c_identifier
1.78 1219.92 25.53 218375227 0.00 0.00
class_key_or_enum_as_string
1.38 1239.65 19.73 216176146 0.00 0.00 dump_template_argument
1.03 1254.37 14.72 3919144 0.00 0.00 purpose_member
0.88 1266.94 12.57 108004962 0.00 0.00
pp_base_last_position_in_text
0.68 1276.74 9.80 162182109 0.00 0.00 pp_cxx_separate_with
0.61 1285.53 8.80 202214181 0.00 0.00 pp_cxx_colon_colon
0.41 1291.38 5.85 54002002 0.00 0.00
pp_cxx_end_template_argument_list
0.41 1297.19 5.81 5800051 0.00 0.00 ggc_alloc_stat
0.40 1302.92 5.73 4113746 0.00 0.00 tsubst
0.37 1308.20 5.29 54002002 0.00 0.00
pp_cxx_begin_template_argument_list
0.31 1312.58 4.38 301296 0.00 0.00 pp_base_emit_prefix
0.30 1316.88 4.30 450268 0.00 0.00 gt_ggc_mx_lang_tree_node
0.27 1320.81 3.93 302601 0.00 0.00 reinit_cxx_pp
0.27 1324.73 3.92 6289194 0.00 0.00 ggc_set_mark
0.26 1328.46 3.73 21 0.00 0.00 pp_base_newline
0.25 1332.04 3.59 892391 0.00 0.00 lookup_template_class
0.24 1335.43 3.39 14090587 0.00 0.00 pp_c_constant
0.20 1338.34 2.91 67465 0.00 0.00 push_to_top_level
0.20 1341.19 2.85 2159736 0.00 0.00 dfs_walk_all
0.17 1343.61 2.43 935808 0.00 0.00 coerce_template_parms
0.17 1346.03 2.42 1554163 0.00 0.00 lookup_field_1
0.16 1348.27 2.24 10344444 0.00 0.00 cp_tree_equal
0.15 1350.49 2.22 222604 0.00 0.00 ht_lookup_with_hash
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29433
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