hg: jdk9/sandbox/hotspot: VM parts for weakCompareAndSetVolatile support

[aleksey.shipilev at oracle.com]

Changeset: 3c0279fdc797
Author:    shade
Date:      2016-04-28 18:38 +0300
URL:       http://hg.openjdk.java.net/jdk9/sandbox/hotspot/rev/3c0279fdc797

VM parts for weakCompareAndSetVolatile support

! src/share/vm/classfile/vmSymbols.hpp
! src/share/vm/opto/library_call.cpp
! test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestBoolean.java
! test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestByte.java
! test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestChar.java
! test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestDouble.java
! test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestFloat.java
! test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestInt.java
! test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestLong.java
! test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestObject.java
! test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestShort.java
! test/compiler/unsafe/SunMiscUnsafeAccessTestBoolean.java
! test/compiler/unsafe/SunMiscUnsafeAccessTestByte.java
! test/compiler/unsafe/SunMiscUnsafeAccessTestChar.java
! test/compiler/unsafe/SunMiscUnsafeAccessTestDouble.java
! test/compiler/unsafe/SunMiscUnsafeAccessTestFloat.java
! test/compiler/unsafe/SunMiscUnsafeAccessTestInt.java
! test/compiler/unsafe/SunMiscUnsafeAccessTestLong.java
! test/compiler/unsafe/SunMiscUnsafeAccessTestObject.java
! test/compiler/unsafe/SunMiscUnsafeAccessTestShort.java
! test/compiler/unsafe/X-UnsafeAccessTest.java.template