http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45375



--- Comment #170 from Jan Hubicka <hubicka at gcc dot gnu.org> 2013-01-10 
15:04:10 UTC ---

OK, here is updated memory use:

cgraph.c:863 (cgraph_allocate_init_indirect_info    5905200: 0.1%          0:

0.0%    6020160: 0.1%          0: 0.0%     298134

tree.c:1237 (build_int_cst_wide)                   15554272: 0.4%          0:

0.0%     782528: 0.0%          0: 0.0%     510525

tree.c:1559 (build_string)                         10685931: 0.2%          0:

0.0%   16715642: 0.4%    2193469: 1.7%     563828

stringpool.c:75 (alloc_node)                              0: 0.0%          0:

0.0%   30574880: 0.7%          0: 0.0%     764372

lto/lto.c:2286 (create_subid_section_table)         1522184: 0.0%          0:

0.0%   39117064: 0.8%    8051472: 6.4%       3978

stringpool.c:58 (stringpool_ggc_alloc)                    0: 0.0%          0:

0.0%   41092405: 0.9%    2954893: 2.4%     764372

gimple.c:3167 (iterative_hash_canonical_type)      45040752: 1.0%          0:

0.0%          0: 0.0%          0: 0.0%    2815047

lto/lto.c:1222 (iterative_hash_gimple_type)        68276864: 1.6%          0:

0.0%          0: 0.0%          0: 0.0%    4267304

ggc-common.c:249 (ggc_cleared_alloc_ptr_array_tw      91784: 0.0% 

487289424:48.8%   71432600: 1.5%     248976: 0.2%      10974

lto/lto.c:1266 (iterative_hash_gimple_type)        75288576: 1.8%          0:

0.0%          0: 0.0%          0: 0.0%    4705536

lto-section-in.c:362 (lto_new_in_decl_state)         694320: 0.0%          0:

0.0%   94861800: 2.0%          0: 0.0%     796301

tree.c:1263 (build_int_cst_wide)                   76232736: 1.8%          0:

0.0%   19358880: 0.4%          0: 0.0%    2987238

cgraph.c:794 (cgraph_create_edge_1)                       0: 0.0%          0:

0.0%  125510632: 2.7%          0: 0.0%    1206833

vec.h:565 ((null))                                 66034564: 1.5%      98716:

0.0%   68500548: 1.5%    3484420: 2.8%     597783

vec.h:695 ((null))                                124654648: 2.9% 

122044288:12.2%   63749232: 1.4%    2614800: 2.1%    1590429

tree-streamer-in.c:562 (streamer_alloc_tree)      125829312: 2.9%          0:

0.0%   74222904: 1.6%       7072: 0.0%    2005091

lto/lto.c:267 (lto_read_in_decl_state)              1478720: 0.0%          0:

0.0%  216390688: 4.7%   38247784:30.5%    5574107

vec.h:747 ((null))                                173791988: 4.0%   19565412:

2.0%   68225644: 1.5%    2680332: 2.1%    1396070

vec.h:707 ((null))                                133872480: 3.1%          0:

0.0%  285212728: 6.1%     800360: 0.6%    1059913

cgraph.c:500 (cgraph_allocate_node)                       0: 0.0%          0:

0.0%  472831880:10.2%          0: 0.0%    1597405

tree.c:1223 (build_int_cst_wide)                  607138944:14.1%          0:

0.0%   10427664: 0.2%    4719336: 3.8%     315034

toplev.c:959 (realloc_for_line_map)                       0: 0.0% 

358037664:35.8% 1073872920:23.1%        184: 0.0%         16

tree-streamer-in.c:573 (streamer_alloc_tree)     2762184192:64.2%          0:

0.0% 1861017624:40.0%   59027616:47.1%   34649937

Total                                            4302007795        999178184   

   4651003487        125411458         68828967

source location                                     Garbage            Freed   

         Leak         Overhead            Times

-------------------------------------------------------





Actually it is a bit of improvement over my past report.  Some obvious things

1) we still soak in too many trees (40%) of memory.  The per-tree stats are:

decls                17310018 -1609736744

types                8983387 1509209016

exprs                2427302   80045744

constants            4079292  135393547

binfos               2005091  200038072

random kinds         5691481  227659664



and counts:

tree_list            5691475       

pointer_type         2337585

record_type          3702066       

function_decl        1856282

field_decl           2812564

const_decl           2739702

parm_decl            3549707

type_decl            4780459

result_decl          1144482

tree_binfo           2005091



2) new linemaps are still a disaster

3) VEC rewrite did break stats.



Honza

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