Mercurial > hg > graal-compiler
view graal/GraalCompiler/src/com/sun/c1x/ir/TypeCheck.java @ 2610:39aa89baa165
cleanup: FrameState copy methods, ImmutableFrameState
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Fri, 06 May 2011 13:03:33 +0200 |
parents | f1bc67c2d453 |
children | 91d3952f7eb7 |
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/* * 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.c1x.ir; import com.oracle.graal.graph.*; import com.sun.c1x.value.*; import com.sun.cri.ci.*; import com.sun.cri.ri.*; /** * The {@code TypeCheck} instruction is the base class of casts and instanceof tests. */ public abstract class TypeCheck extends StateSplit { private static final int INPUT_COUNT = 2; private static final int INPUT_OBJECT = 0; private static final int INPUT_TARGET_CLASS_INSTRUCTION = 1; private static final int SUCCESSOR_COUNT = 0; @Override protected int inputCount() { return super.inputCount() + INPUT_COUNT; } @Override protected int successorCount() { return super.successorCount() + SUCCESSOR_COUNT; } /** * The instruction which produces the object input. */ public Value object() { return (Value) inputs().get(super.inputCount() + INPUT_OBJECT); } public Value setObject(Value n) { return (Value) inputs().set(super.inputCount() + INPUT_OBJECT, n); } /** * The instruction that loads the target class object that is used by this checkcast. */ public Value targetClassInstruction() { return (Value) inputs().get(super.inputCount() + INPUT_TARGET_CLASS_INSTRUCTION); } public Value setTargetClassInstruction(Value n) { return (Value) inputs().set(super.inputCount() + INPUT_TARGET_CLASS_INSTRUCTION, n); } final RiType targetClass; /** * Creates a new TypeCheck instruction. * @param targetClass the class which is being casted to or checked against * @param object the instruction which produces the object * @param kind the result type of this instruction * @param stateBefore the state before this instruction is executed * @param inputCount * @param successorCount * @param graph */ public TypeCheck(RiType targetClass, Value targetClassInstruction, Value object, CiKind kind, FrameState stateBefore, int inputCount, int successorCount, Graph graph) { super(kind, stateBefore, inputCount + INPUT_COUNT, successorCount + SUCCESSOR_COUNT, graph); this.targetClass = targetClass; setObject(object); setTargetClassInstruction(targetClassInstruction); } /** * Gets the target class, i.e. the class being cast to, or the class being tested against. * @return the target class */ public RiType targetClass() { return targetClass; } /** * Checks whether the target class of this instruction is loaded. * @return {@code true} if the target class is loaded */ public boolean isLoaded() { return targetClass != null; } }