Various minor speed-ups

[Richard Guenther]

On Mon, Aug 22, 2011 at 9:50 AM, Dimitrios Apostolou <jimis@gmx.net> wrote:
>
> 2011-08-22  Dimitrios Apostolou  <jimis@gmx.net>
>
>        * tree-ssa-pre.c (phi_trans_add, init_pre, fini_pre): Added a pool
>        for phi_translate_table elements to avoid free() calls from
>        htab_delete().

Ok if bootstrap and test pass.

Richard.