hg: ppc-aix-port/stage/hotspot: 8028471: PPC64 (part 215): opto: Extend ImplicitNullCheck optimization.

[vladimir.kozlov at oracle.com]

Changeset: b0133e4187d3
Author:    goetz
Date:      2013-11-21 18:29 -0800
URL:       http://hg.openjdk.java.net/ppc-aix-port/stage/hotspot/rev/b0133e4187d3

8028471: PPC64 (part 215): opto: Extend ImplicitNullCheck optimization.
Summary: Fixed Implicit NULL check optimization for AIX, where the page at address '0' is only write-protected.
Reviewed-by: kvn

! src/cpu/ppc/vm/globals_ppc.hpp
! src/cpu/ppc/vm/macroAssembler_ppc.cpp
! src/cpu/ppc/vm/macroAssembler_ppc.inline.hpp
! src/cpu/ppc/vm/sharedRuntime_ppc.cpp
! src/cpu/ppc/vm/vtableStubs_ppc_64.cpp
! src/os/bsd/vm/os_bsd.hpp
! src/os/linux/vm/os_linux.hpp
! src/os/solaris/vm/os_solaris.hpp
! src/os/windows/vm/os_windows.hpp
! src/share/vm/opto/callGenerator.cpp
! src/share/vm/opto/lcm.cpp