hg: panama/dev: Different cleanups in backend C2 support

[vladimir.x.ivanov at oracle.com]

Changeset: 8aa358713110
Author:    vlivanov
Date:      2020-04-02 18:13 +0300
URL:       https://hg.openjdk.java.net/panama/dev/rev/8aa358713110

Different cleanups in backend C2 support

! src/hotspot/cpu/aarch64/aarch64.ad
! src/hotspot/cpu/x86/assembler_x86.cpp
! src/hotspot/cpu/x86/c2_MacroAssembler_x86.cpp
! src/hotspot/cpu/x86/c2_MacroAssembler_x86.hpp
! src/hotspot/cpu/x86/x86.ad
! src/hotspot/cpu/x86/x86_32.ad
! src/hotspot/cpu/x86/x86_64.ad
! src/hotspot/share/opto/vector.cpp
! src/hotspot/share/opto/vectornode.cpp
! src/hotspot/share/opto/vectornode.hpp
! src/hotspot/share/prims/vectorSupport.hpp
! src/hotspot/share/utilities/globalDefinitions.hpp