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[Bug lto/45375] [meta-bug] Issues with building Mozilla with LTO
- From: "hubicka at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 12 May 2012 21:33:36 +0000
- Subject: [Bug lto/45375] [meta-bug] Issues with building Mozilla with LTO
- Auto-submitted: auto-generated
- References: <bug-45375-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45375
--- Comment #135 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-05-12 21:33:36 UTC ---
... and mem reports on WPA stage:
toplev.c:964 (realloc_for_line_map) 0: 0.0% 89473168:
9.4% 268435472:10.3% 160: 0.0% 8
cgraph.c:359 (cgraph_allocate_node) 0: 0.0% 0:
0.0% 401297520:15.3% 0: 0.0% 1286210
tree.c:1228 (build_int_cst_wide) 1188709752:33.7% 0:
0.0% 22765400: 0.9% 399425424:83.1% 208540
tree-streamer-in.c:495 (streamer_alloc_tree) 1950272016:55.3% 0:
0.0% 1143907104:43.7% 41182080: 8.6% 22462122
Total 3527995024 956449616
2618397893 480920037 47749265
source location Garbage Freed
Leak Overhead Times
So about 50% trees, 15% cgraph nodes (I do have plans how to get those
smaller), 10% linemaps (I wonder if simple cache would not save a lot of
locators), 5% inline summaries
I wonder who is producing that 1GB of temporary integer nodes? Someone abusing
them for counting too much? It is there before IPA, so it seems to be streaming
or type machinery.
Heap vectors:
source location Leak Peak
Times
-------------------------------------------------------
ipa-reference.c:186 (set_reference_optimization_ 10289688:10.5% 11240664
13: 0.0%
lto-cgraph.c:118 (lto_cgraph_encoder_encode) 12756976:13.0% 23348152
26300: 0.2%
ipa-ref.c:55 (ipa_record_reference) 13593072:13.8% 41932432
1000565: 6.0%
passes.c:2214 (execute_one_pass) 21214520:21.5% 41942992
557113: 3.3%
ipa-inline-analysis.c:804 (inline_summary_alloc) 30037064:30.5% 30037064
1: 0.0%
Total 98450004
16768143
Bitmap Overall Allocated
Peak Leak searched search itr
---------------------------------------------------------------------------------
ipa-reference.c:911 (propagate) 372741 31244280
31223720 31223720 0 0
ipa-reference.c:739 (propagate) 329258 13341680
3058960 3058960 0 0
ipa-reference.c:923 (propagate) 372186 25153920
25138520 25138520 0 0
ipa-reference.c:417 (init_function_info) 487263 19809560
19809560 19809560 551 335
ipa-reference.c:418 (init_function_info) 487263 19584680
19584680 19584680 79 45
ipa-reference.c:747 (propagate) 329351 13229360
3053920 3053920 0 0
Kind Nodes Bytes
---------------------------------------
decls 11059354 1770384416
types 6163492 1035466656
blocks 1 80
stmts 0 0
refs 5243 267944
exprs 1826905 74999944
constants 2198755 72290570
identifiers 538891 21555640
vecs 208540 412624304
binfos 1420249 141631744
ssa names 111 8880
constructors 159169 3820056
random kinds 3270917 130837088
Honza