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

[hubicka at ucw dot cz]

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

--- Comment #34 from Jan Hubicka <hubicka at ucw dot cz> ---
The problem is (as described earlier) the fact htat we sum size of all call
statmts
in function after every inline decision.
Most of time is spent in calling estimate_edge_size_and_time:
 79.95%       cc1  cc1                [.]
_ZL28estimate_calls_size_and_timeP11cgraph_nodePiS1_S1_S1_j3vecIP9tree_node7va_heap6vl_ptrES2_I28ipa_polymorphic_call_contextS5_S6_ES2_IP21ipa_agg
  2.21%       cc1  libc-2.13.so       [.] _int_malloc
  0.59%       cc1  libc-2.13.so       [.] _int_free

Updating summaries incrementally will solve it but at the moment do not see any
really simple change for GCC-5 (i looked at this code couple times already
because of this PR)

Honza