[google gcc-4_8] Restore max peeled instructions to old default

[Teresa Johnson]

The default for the max instructions in peeled loops was reduced on
trunk in r193570. This is causing a performance regression on an internal
benchmark. This change will revert to the old higher limits.

Google ref b/8839137.

Bootstrapped and tested. Ok for google/4_8?

Thanks,
Teresa

2013-06-06  Teresa Johnson  <tejohnson@google.com>

* params.def (PARAM_MAX_PEELED_INSNS): Revert to 400.
        (PARAM_MAX_COMPLETELY_PEELED_INSNS): Ditto.

Index: params.def
===================================================================
--- params.def (revision 199753)
+++ params.def (working copy)
@@ -306,7 +306,7 @@ DEFPARAM(PARAM_MAX_UNROLL_TIMES,
 DEFPARAM(PARAM_MAX_PEELED_INSNS,
  "max-peeled-insns",
  "The maximum number of insns of a peeled loop",
- 100, 0, 0)
+ 400, 0, 0)
 /* The maximum number of peelings of a single loop.  */
 DEFPARAM(PARAM_MAX_PEEL_TIMES,
  "max-peel-times",
@@ -321,7 +321,7 @@ DEFPARAM(PARAM_MAX_PEEL_BRANCHES,
 DEFPARAM(PARAM_MAX_COMPLETELY_PEELED_INSNS,
  "max-completely-peeled-insns",
  "The maximum number of insns of a completely peeled loop",
- 100, 0, 0)
+ 400, 0, 0)
 /* The maximum number of peelings of a single loop that is peeled
completely.  */
 DEFPARAM(PARAM_MAX_COMPLETELY_PEEL_TIMES,
  "max-completely-peel-times",


--
Teresa Johnson | Software Engineer | tejohnson@google.com | 408-460-2413