hg: panama/dev: Direct native calls: C2 support

[vladimir.x.ivanov at oracle.com]

Changeset: 113e76a799c8
Author:    vlivanov
Date:      2019-01-07 16:07 -0800
URL:       http://hg.openjdk.java.net/panama/dev/rev/113e76a799c8

Direct native calls: C2 support

! src/hotspot/cpu/x86/directUpcallHandler_x86.cpp
! src/hotspot/cpu/x86/stubGenerator_x86_64.cpp
! src/hotspot/share/opto/callGenerator.cpp
! src/hotspot/share/opto/graphKit.cpp
! src/hotspot/share/opto/graphKit.hpp
! src/hotspot/share/opto/runtime.cpp
! src/hotspot/share/opto/runtime.hpp
! src/hotspot/share/runtime/stubRoutines.cpp
! src/hotspot/share/runtime/stubRoutines.hpp