hg: hsx/hotspot-comp/hotspot: 8023597: Optimize G1 barriers code for unsafe load_store

[vladimir.kozlov at oracle.com]

Changeset: 29aa8936f03c
Author:    kvn
Date:      2013-08-28 11:22 +0200
URL:       http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/29aa8936f03c

8023597: Optimize G1 barriers code for unsafe load_store
Summary: Avoid loading old values in G1 pre-barriers for inlined unsafe load_store nodes.
Reviewed-by: kvn, tonyp
Contributed-by: Martin Doerr <martin.doerr at sap.com>

! src/share/vm/opto/graphKit.cpp
! src/share/vm/opto/graphKit.hpp
! src/share/vm/opto/library_call.cpp