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From: "tsaunders at mozilla dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/58575] New: gcc should compile firefox code faster.
Date: Sun, 29 Sep 2013 21:19:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58575

            Bug ID: 58575
           Summary: gcc should compile firefox code faster.
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tsaunders at mozilla dot com
                CC: hubicka at ucw dot cz

Its ceretainly possible given
https://blog.mozilla.org/nnethercote/2013/09/12/bleg-for-a-new-machine-2/ (I'm
not sure what versions njn is using but probably doesn't matter too much).
I rofiled build a build of content/ in the firefox tree for a --enable-optimize
--disable-debug build you can see the data I gathered at
http://people.mozilla.org/~tsaunders/gcc-perf.data .  The two things that came
up high in profiles were C++ parsing stuff and memory allocation.  I suppose
there isn't too much to be done about the memory allocation issue in the short
term, but I wonder if there's changes to the parser that would help at least
some.