[Bug lto/54312] uniquify_nodes takes 12% of Mozilla LTO build

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54312

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-09-20 14:52:07 UTC ---
Author: rguenth
Date: Thu Sep 20 14:51:59 2012
New Revision: 191568

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=191568
Log:
2012-09-20  Richard Guenther  <rguenther@suse.de>

    Backport from mainline
    2012-09-11  Jan Hubicka  <jh@suse.cz>

    PR lto/54312
    * lto.c (uniquify_nodes): Remove quadratic loop checking if the
    type is variant leader.

Modified:
    branches/gcc-4_7-branch/gcc/lto/ChangeLog
    branches/gcc-4_7-branch/gcc/lto/lto.c