hotspot/src/cpu/zero/vm/vm_version_zero.cpp
author aph
Tue, 31 Mar 2015 12:31:18 -0700
changeset 30209 8ea30dc99369
parent 25468 5331df506290
child 33750 6f5873dfa67f
child 33461 4f430ebdf117
permissions -rw-r--r--
8026049: (bf) Intrinsify ByteBuffer.put{Int, Double, Float, ...} methods Summary: Use unaligned Unsafe loads and stores for ByteBuffer access on platforms which support unaligned access. Add intrinsics for Unsafe.{get,put}-X-Unaligned methods. Reviewed-by: dholmes, jrose, psandoz, kvn

/*
 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
 * Copyright 2009 Red Hat, Inc.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

#include "precompiled.hpp"
#include "assembler_zero.inline.hpp"
#include "memory/resourceArea.hpp"
#include "runtime/java.hpp"
#include "runtime/stubCodeGenerator.hpp"
#include "vm_version_zero.hpp"


void VM_Version::initialize() {
  // This machine does not allow unaligned memory accesses
  if (! FLAG_IS_DEFAULT(UseUnalignedAccesses)) {
    warning("Unaligned memory access is not available on this CPU");
    FLAG_SET_DEFAULT(UseUnalignedAccesses, false);
  }
}