[Bug tree-optimization/44563] GCC uses a lot of RAM when compiling a large numbers of functions

[hubicka at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44563

Jan Hubicka <hubicka at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vmakarov at redhat dot com

--- Comment #9 from Jan Hubicka <hubicka at gcc dot gnu.org> 2010-12-13 01:17:19 UTC ---
And since Richard did not include 4.6 in his -ftime-reports, here is -O0
 garbage collection    :   1.74 ( 4%) usr   0.00 ( 0%) sys   1.76 ( 3%) wall   
   0 kB ( 0%) ggc
 callgraph construction:   1.07 ( 2%) usr   0.26 ( 5%) sys   1.33 ( 3%) wall  
41984 kB ( 3%) ggc
 callgraph optimization:   0.62 ( 1%) usr   0.24 ( 5%) sys   0.98 ( 2%) wall  
91137 kB ( 6%) ggc
 df scan insns         :   3.47 ( 8%) usr   0.32 ( 6%) sys   3.72 ( 7%) wall   
7168 kB ( 0%) ggc
 parser                :   1.37 ( 3%) usr   0.41 ( 8%) sys   1.59 ( 3%) wall 
202094 kB (13%) ggc
 inline heuristics     :   1.33 ( 3%) usr   0.01 ( 0%) sys   1.29 ( 3%) wall   
   0 kB ( 0%) ggc
 tree gimplify         :   0.70 ( 2%) usr   0.06 ( 1%) sys   0.70 ( 1%) wall  
73728 kB ( 5%) ggc
 tree CFG construction :   0.21 ( 0%) usr   0.09 ( 2%) sys   0.25 ( 0%) wall  
82433 kB ( 5%) ggc
 tree operand scan     :   0.10 ( 0%) usr   0.10 ( 2%) sys   0.15 ( 0%) wall  
69141 kB ( 5%) ggc
 expand                :   2.32 ( 5%) usr   0.24 ( 5%) sys   2.45 ( 5%) wall 
242940 kB (16%) ggc
 post expand cleanups  :   0.50 ( 1%) usr   0.02 ( 0%) sys   0.49 ( 1%) wall  
76289 kB ( 5%) ggc
 integrated RA         :  10.03 (22%) usr   0.15 ( 3%) sys  10.44 (20%) wall 
135680 kB ( 9%) ggc
 reload                :   4.42 (10%) usr   0.07 ( 1%) sys   4.60 ( 9%) wall  
55295 kB ( 4%) ggc
 rest of compilation   :   3.03 ( 7%) usr   0.82 (16%) sys   3.65 ( 7%) wall 
170498 kB (11%) ggc
 final                 :   3.67 ( 8%) usr   0.09 ( 2%) sys   3.65 ( 7%) wall  
30144 kB ( 2%) ggc
 unaccounted todo      :   1.63 ( 4%) usr   0.91 (18%) sys   2.58 ( 5%) wall   
   0 kB ( 0%) ggc

Wonder what is accounted into rest of compilation.
Otherwise RA remains the compile time bottleneck. Will do memory stats later. 
Adding Vladimir to CC for RA.