[PATCH] Mark fira-loop-pressure as optimization

[Paulo J. Matos]

Hi,

This patch marks fira-loop-pressure as an optimization so it shows in 
gcc --help=optimizers.

2014-03-06  Paulo Matos  <pa...@matos-sorge.com>

        * common.opt (fira-loop-pressure): Mark as optimization.

OK to commit?

--
PMatos