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[Bug lto/45375] [meta-bug] Issues with building Mozilla with LTO
- From: "hubicka at ucw dot cz" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 11 May 2012 08:34:17 +0000
- Subject: [Bug lto/45375] [meta-bug] Issues with building Mozilla with LTO
- Auto-submitted: auto-generated
- References: <bug-45375-4@http.gcc.gnu.org/bugzilla/>
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