[Bug ipa/65076] [5/6 Regression] 16% tramp3d-v4.cpp compile time regression

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65076

--- Comment #61 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
It seems we regressed slightly further.
GCC 4.9: 27.87s
GCC 5: 32.2
trunk: 37.78

furhter GGC memory use went up from 1053147 kB to 1221321 kB.

GCC 4.9:
 phase parsing           :   1.55 ( 5%) usr   1.24 (22%) sys   3.77 (10%) wall 
167909 kB (16%) ggc
 phase lang. deferred    :   2.19 ( 7%) usr   0.54 (10%) sys   2.77 ( 7%) wall 
194757 kB (18%) ggc
 phase opt and generate  :  28.52 (88%) usr   3.75 (68%) sys  32.43 (83%) wall 
699106 kB (66%) ggc 
 |name lookup            :   0.36 ( 1%) usr   0.29 ( 5%) sys   0.70 ( 2%) wall 
 26015 kB ( 2%) ggc
 |overload resolution    :   1.14 ( 4%) usr   0.24 ( 4%) sys   1.49 ( 4%) wall 
118130 kB (11%) ggc


GCC 5:

 phase parsing           :   1.51 ( 5%) usr   1.09 (21%) sys   3.06 ( 9%) wall 
172015 kB (16%) ggc
 phase lang. deferred    :   2.17 ( 8%) usr   0.58 (11%) sys   2.76 ( 8%) wall 
205684 kB (20%) ggc
 phase opt and generate  :  24.17 (87%) usr   3.48 (67%) sys  27.69 (82%) wall 
673958 kB (64%) ggc
 |name lookup            :   0.48 ( 2%) usr   0.19 ( 4%) sys   0.73 ( 2%) wall 
 26569 kB ( 3%) ggc
 |overload resolution    :   1.17 ( 4%) usr   0.38 ( 7%) sys   1.37 ( 4%) wall 
121708 kB (12%) ggc 

GCC 6: 

 phase setup             :   0.01 ( 0%) usr   0.00 ( 0%) sys   0.01 ( 0%) wall 
  1396 kB ( 0%) ggc
 phase parsing           :   2.54 ( 7%) usr   1.23 (22%) sys   3.77 ( 9%) wall 
247024 kB (20%) ggc
 phase lang. deferred    :   3.18 ( 8%) usr   0.63 (11%) sys   3.81 ( 9%) wall 
235161 kB (19%) ggc
 phase opt and generate  :  32.05 (85%) usr   3.86 (67%) sys  35.90 (83%) wall 
737728 kB (60%) ggc 
 |name lookup            :   0.72 ( 2%) usr   0.17 ( 3%) sys   0.93 ( 2%) wall 
 35248 kB ( 3%) ggc
 |overload resolution    :   1.85 ( 5%) usr   0.48 ( 8%) sys   2.09 ( 5%) wall 
155432 kB (13%) ggc

So quite noticeable regression in parsing up.