[Bug lto/45375] [meta-bug] Issues with building Mozilla with LTO

[hubicka at ucw dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45375

--- Comment #124 from Jan Hubicka <hubicka at ucw dot cz> 2012-05-11 08:34:17 UTC ---
> Just for comparison, clang with -O4 runs only single threaded and does
> everything in memory (no streaming out). It uses 3.5GB of memory (peak) and
> takes 19 minutes to finish...

Interesting.  Micsofot's compiler is also barely in 4GB space, right?
Is it with debug info?

I will try non-WHOPR build to see how bad we are.  The actual IL is about 1.5GB
of the footprint (measuing GGC memory).  I think good part of the rest comes to
mmap
address space (the object files are rather large).

Honza