hg: jdk/hs: 8199421: Add support for vector popcount

[vladimir.kozlov at oracle.com]

Changeset: b242a1e3f9cf
Author:    rlupusoru
Date:      2018-03-13 10:22 -0700
URL:       http://hg.openjdk.java.net/jdk/hs/rev/b242a1e3f9cf

8199421: Add support for vector popcount
Reviewed-by: kvn

! src/hotspot/cpu/x86/assembler_x86.cpp
! src/hotspot/cpu/x86/assembler_x86.hpp
! src/hotspot/cpu/x86/vm_version_x86.cpp
! src/hotspot/cpu/x86/vm_version_x86.hpp
! src/hotspot/cpu/x86/x86.ad
! src/hotspot/share/adlc/formssel.cpp
! src/hotspot/share/opto/classes.hpp
! src/hotspot/share/opto/superword.cpp
! src/hotspot/share/opto/vectornode.cpp
! src/hotspot/share/opto/vectornode.hpp
! src/hotspot/share/runtime/vmStructs.cpp
! test/hotspot/jtreg/TEST.groups
+ test/hotspot/jtreg/compiler/vectorization/TestPopCountVector.java