hg: jdk7/hotspot-comp/hotspot: 6964776: c2 should ensure the polling page is reachable on 64 bit

[igor.veresov at oracle.com]

Changeset: b40d4fa697bf
Author:    iveresov
Date:      2011-03-27 13:17 -0700
URL:       http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/b40d4fa697bf

6964776: c2 should ensure the polling page is reachable on 64 bit
Summary: Materialize the pointer to the polling page in a register instead of using rip-relative addressing when the distance from the code cache is larger than disp32.
Reviewed-by: never, kvn

! src/cpu/x86/vm/assembler_x86.cpp
! src/cpu/x86/vm/assembler_x86.hpp
! src/cpu/x86/vm/c1_LIRAssembler_x86.cpp
! src/cpu/x86/vm/nativeInst_x86.hpp
! src/cpu/x86/vm/relocInfo_x86.cpp
! src/cpu/x86/vm/x86_64.ad