The following patch restores the old default limits for loop peeling 
that were recently changed to 100 and caused a 20% degradation in 
454.calculix.

Bootstrap/regtest on powerpc64-linux with no new regressions. Ok for trunk?

-Pat


2012-12-06  Pat Haugen <pthaugen@us.ibm.com>
         * config/rs6000/rs6000.c (rs6000_option_override_internal): Set
         default loop peeling limits.