hg: jdk7/hotspot-comp/hotspot: 7039652: Performance regression after 7004547 changes

[vladimir.kozlov at oracle.com]

Changeset: ae93231c7a1f
Author:    kvn
Date:      2011-04-28 16:40 -0700
URL:       http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/ae93231c7a1f

7039652: Performance regression after 7004547 changes
Summary: Use unrolled_count() to limit unrolling and use the stride check only for initial stride value.
Reviewed-by: never

! src/share/vm/opto/loopTransform.cpp