Mercurial > hg > graal-compiler
view graal/com.oracle.max.cri/src/com/sun/cri/ci/CiRegisterValue.java @ 4182:de7b3e7ae528
Simplify CiValue
author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Mon, 02 Jan 2012 14:38:17 -0800 |
parents | f5328dda9714 |
children | 9e0c1b4cfef5 |
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/* * Copyright (c) 2009, 2012, 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 { private static final long serialVersionUID = 7999341472196897163L; /** * The register. */ public final CiRegister reg; /** * Should only be called from {@link CiRegister#CiRegister} to ensure canonicalization. */ protected CiRegisterValue(CiKind kind, CiRegister register) { super(kind); this.reg = register; } @Override public int hashCode() { return (reg.number << 4) ^ kind.ordinal(); } @Override public String toString() { return reg.name + kindSuffix(); } @Override public CiRegister asRegister() { return reg; } }