hg: hsx/hotspot-comp/hotspot: 7105605: Use EA info to optimize pointers compare

[vladimir.kozlov at oracle.com]

Changeset: 8c57262447d3
Author:    kvn
Date:      2011-11-14 18:38 -0800
URL:       http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/8c57262447d3

7105605: Use EA info to optimize pointers compare
Summary: optimize pointers compare using EA information.
Reviewed-by: never, twisti

! src/share/vm/opto/c2_globals.hpp
! src/share/vm/opto/cfgnode.cpp
! src/share/vm/opto/escape.cpp
! src/share/vm/opto/escape.hpp