Mercurial > hg > truffle
view graal/com.oracle.max.cri/src/com/sun/cri/ci/CiRegisterValue.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
---|---|
date | Sat, 17 Dec 2011 19:59:18 +0100 |
parents | |
children | bc8527f3071c |
line wrap: on
line source
/* * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. * 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. */ package com.sun.cri.ci; /** * Denotes a register that stores a value of a fixed kind. There is exactly one (canonical) instance of {@code * CiRegisterValue} for each ({@link CiRegister}, {@link CiKind}) pair. Use {@link CiRegister#asValue(CiKind)} to * retrieve the canonical {@link CiRegisterValue} instance for a given (register,kind) pair. */ public final class CiRegisterValue extends CiValue { /** * The register. */ public final CiRegister reg; /** * Should only be called from {@link CiRegister#CiRegister} to ensure canonicalization. */ CiRegisterValue(CiKind kind, CiRegister register) { super(kind); this.reg = register; } @Override public int hashCode() { return kind.ordinal() ^ reg.number; } @Override public boolean equals(Object o) { return o == this; } @Override public boolean equalsIgnoringKind(CiValue other) { if (other instanceof CiRegisterValue) { return ((CiRegisterValue) other).reg == reg; } return false; } @Override public String name() { return reg.name; } @Override public CiRegister asRegister() { return reg; } }