hg: jdk7/hotspot-comp/hotspot: 6954029: Improve implicit null check generation with compressed oops

[vladimir.kozlov at oracle.com]

Changeset: 3657cb01ffc5
Author:    kvn
Date:      2010-06-02 09:49 -0700
URL:       http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/3657cb01ffc5

6954029: Improve implicit null check generation with compressed oops
Summary: Hoist DecodeN instruction above null check
Reviewed-by: never, twisti

! src/cpu/sparc/vm/sparc.ad
! src/cpu/sparc/vm/vm_version_sparc.cpp
! src/cpu/x86/vm/x86_32.ad
! src/cpu/x86/vm/x86_64.ad
! src/share/vm/opto/compile.cpp
! src/share/vm/opto/connode.cpp
! src/share/vm/opto/lcm.cpp
! src/share/vm/opto/matcher.cpp
! src/share/vm/opto/matcher.hpp