[Bug lto/78140] [7 Regression] libxul -flto uses 1GB more memory than gcc-6

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78140

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-12-01
     Ever confirmed|0                           |1

--- Comment #14 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
From a quick glance it seems to be mostly GGC memory related to
ipa-cp/ipa-inline and the global stream. Perhaps we just manage to do much more
cloning/inlining decisions than before?  How does the code size and inline
dumps compare? 

I will try to reproduce this. We need detialed mem report and take look if the
optimization decisions diverge or it is just extra stuff brought in by the
extended jump functions or extra data we stream.