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Re: [wwwdocs] Add info about IPA optimization and LTO improvments
- From: Andi Kleen <andi at firstfloor dot org>
- To: Jan Hubicka <hubicka at ucw dot cz>
- Cc: gcc-patches at gcc dot gnu dot org, gerald at pfeifer dot com, mjambor at suse dot cz
- Date: Sun, 25 Sep 2011 20:30:52 -0700
- Subject: Re: [wwwdocs] Add info about IPA optimization and LTO improvments
- References: <20110921095325.GC6165@kam.mff.cuni.cz>
Jan Hubicka <hubicka@ucw.cz> writes:
> </li>
> + <li>Link-time optimization improvements:
> + <ul>
> + <li>Improved scalability and reduced memory usage. Link time optimization
> + of Firefox now require 3GB of RAM on 64bit system, while over 8GB was needed
> + previously. Linking time has been improved, too. The serial stage of linking
> + Firefox binary has been sped up approximately by factor of 10.</li>
> + <li>Reduced size of object files and temporary storage used during linktime.</li>
> + <li>Streaming performance has been improved.</li>
> + <li>Number of bug fixes, especially in symbol table handling
> and merging.</li>
<li>ld -r is now supported with LTO</li>
-Andi
--
ak@linux.intel.com -- Speaking for myself only