Re: optimization/10196: [3.3/3.4 regression] Compile time regressionwith inlining

[Richard Guenther <rguenth at tat dot physik dot uni-tuebingen dot de>]

Got some profiles from g++ (GCC) 3.3 20030408 (prerelease) for the
testcases (with and without exception handling enabled) at

http://www.tat.physik.uni-tuebingen.de/~rguenth/DynamicLayout.cmpl.ii.ex.prof.gz

for the testcase at
http://www.tat.physik.uni-tuebingen.de/~rguenth/DynamicLayout2.cmpl.ii.gz
compiled with -O2

and

http://www.tat.physik.uni-tuebingen.de/~rguenth/DynamicLayout.cmpl.ii.noex.prof.gz

for the testcase at
http://www.tat.physik.uni-tuebingen.de/~rguenth/DynamicLayout.cmpl.ii.noex.gz
compiled with -O2 -fno-exceptions

The top of the (flat) profiles is for the -fno-exceptions case:
  %   cumulative   self              self     total
 time   seconds   seconds    calls  ms/call  ms/call  name
  5.82      0.80     0.80   766758     0.00     0.00  walk_tree
  2.62      1.16     0.36  2894249     0.00     0.00
htab_find_slot_with_hash
  2.25      1.47     0.31        1   310.00 13483.20  yyparse
  1.75      1.71     0.24  3031555     0.00     0.00  ggc_alloc
  1.45      1.91     0.20  4068886     0.00     0.00  statement_code_p
  1.45      2.11     0.20   460662     0.00     0.00
splay_tree_splay_helper
  1.31      2.29     0.18  1667085     0.00     0.00  timevar_push
  1.31      2.47     0.18   486047     0.00     0.00  for_each_rtx
  1.24      2.64     0.17  2731899     0.00     0.00  htab_find_slot
  1.24      2.81     0.17   102119     0.00     0.00  cse_insn
  1.24      2.98     0.17    68502     0.00     0.00
gt_ggc_mx_lang_tree_node
  1.09      3.13     0.15  3334173     0.00     0.00  get_time

and for the -fexceptions case:
  %   cumulative   self              self     total
 time   seconds   seconds    calls  ms/call  ms/call  name
  6.92     11.24    11.24  1531056     0.01     0.02  walk_tree
  6.61     21.97    10.73  1048564     0.01     0.01
flow_delete_block_noexpunge
  4.72     29.63     7.66  3413593     0.00     0.00  emit_insn
  2.97     34.46     4.83  1767371     0.00     0.00
gt_ggc_mx_lang_tree_node
  2.66     38.78     4.32    17457     0.25     0.25  clear_table
  2.63     43.05     4.27 20409582     0.00     0.00  copy_node
  2.56     47.21     4.16     1582     2.63     2.71  init_alias_analysis
  2.39     51.10     3.89 42221301     0.00     0.00  ggc_alloc
  1.98     54.32     3.22 86395200     0.00     0.00  statement_code_p
  1.95     57.48     3.16 52652842     0.00     0.00  ggc_set_mark
  1.83     60.46     2.98  3539665     0.00     0.00  gt_ggc_mx_rtx_def
  1.70     63.22     2.76 23360833     0.00     0.00  copy_tree_r

But I dont really know where to look for (remember, -fno-default-inline
sort of "fixes" the problem, too).

Richard.