[Bug c++/12850] memory consumption for heavy template instantiations tripled since 3.3

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=12850

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu.org

--- Comment #49 from Jason Merrill <jason at gcc dot gnu.org> ---
Current -fmem-report (r262156, checking build):

GGC memory                                           Garbage            Freed  
          Leak        Overhead            Times
--------------------------------------------------------------------------------------------------------------------------------------------

[trim too-long comment]

cp/pt.c:8348 (coerce_template_parms)                6817576:  2.4%         0: 
0.0%    937528:  0.3%         0:  0.0%    202820
cp/parser.c:651 (cp_lexer_new_main)                       0:  0.0%   7340056: 
2.6%   8388616:  2.8%        32:  0.0%         4
emit-rtl.c:4116 (make_note_raw)                     8686160:  3.0%         0: 
0.0%      8736:  0.0%         0:  0.0%    155266
dwarf2cfi.c:437 (copy_cfi_row)                      9461232:  3.3%         0: 
0.0%         0:  0.0%         0:  0.0%     65703
emit-rtl.c:384 (set_mem_attrs)                      9613240:  3.3%         0: 
0.0%     49440:  0.0%         0:  0.0%    241567
cfg.c:125 (alloc_block)                             3142880:  1.1%         0: 
0.0%   7364448:  2.5%         0:  0.0%    101032
cp/pt.c:12459 (tsubst_template_args)                9494008:  3.3%         0: 
0.0%   1141672:  0.4%         0:  0.0%    277002
tree-ssanames.c:83 (init_ssanames)                        0:  0.0%    125952: 
0.0%  11877888:  4.0%   4001280: 22.2%      7815
emit-rtl.c:845 (gen_rtx_MEM)                       12411408:  4.3%         0: 
0.0%    270192:  0.1%         0:  0.0%    528400
toplev.c:918 (realloc_for_line_map)                       0:  0.0%    625728: 
0.2%  12963872:  4.4%   2319240: 12.9%     14979
tree-ssanames.c:295 (make_ssa_name_fn)               959544:  0.3%         0: 
0.0%  12208680:  4.1%         0:  0.0%    182892
emit-rtl.c:473 (gen_raw_REG)                       14950248:  5.2%        24: 
0.0%     30624:  0.0%         0:  0.0%    624204
emit-rtl.c:488 (gen_rtx_EXPR_LIST)                 15043416:  5.2%         0: 
0.0%     14112:  0.0%         0:  0.0%    627397
emit-rtl.c:5846 (init_emit)                        18473000:  6.4%   1757600: 
0.6%      2600:  0.0%   4295664: 23.8%      7782
tree-ssa-operands.c:265 (ssa_operand_alloc)               0:  0.0%   1232896: 
0.4%  20814848:  7.1%         0:  0.0%      9657
emit-rtl.c:4021 (make_insn_raw)                    29981632: 10.3%         0: 
0.0%     60480:  0.0%         0:  0.0%    469408
--------------------------------------------------------------------------------------------------------------------------------------------
Total                                             289790159:100.0%
279280216:100.0% 294500915:100.0%  18021250:100.0%  10562404
--------------------------------------------------------------------------------------------------------------------------------------------

89.26user 0.61system 1:30.15elapsed 99%CPU (0avgtext+0avgdata
773444maxresident)k