Mercurial > hg > truffle
view graal/GraalCompiler/src/com/sun/c1x/ir/CheckCast.java @ 2509:16b9a8b5ad39
Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
---|---|
date | Wed, 27 Apr 2011 11:50:44 +0200 |
parents | graal/Compiler/src/com/sun/c1x/ir/CheckCast.java@9ec15d6914ca |
children | f1bc67c2d453 |
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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.sun.c1x.debug.*; import com.sun.c1x.util.*; import com.sun.c1x.value.*; import com.sun.cri.bytecode.*; import com.sun.cri.ci.*; import com.sun.cri.ri.*; /** * The {@code CheckCast} instruction represents a {@link Bytecodes#CHECKCAST}. * * @author Ben L. Titzer */ public final class CheckCast extends TypeCheck { /** * Creates a new CheckCast instruction. * @param targetClass the class being cast to * @param object the instruction producing the object * @param stateBefore the state before the cast */ public CheckCast(RiType targetClass, Value targetClassInstruction, Value object, FrameState stateBefore) { super(targetClass, targetClassInstruction, object, CiKind.Object, stateBefore); initFlag(Flag.NonNull, object.isNonNull()); } /** * Gets the declared type of the result of this instruction. * @return the declared type of the result */ @Override public RiType declaredType() { return targetClass; } /** * Gets the exact type of the result of this instruction. * @return the exact type of the result */ @Override public RiType exactType() { return targetClass.isResolved() ? targetClass.exactType() : null; } @Override public void accept(ValueVisitor v) { v.visitCheckCast(this); } @Override public int valueNumber() { return targetClass.isResolved() ? Util.hash1(Bytecodes.CHECKCAST, object) : 0; } @Override public boolean valueEqual(Instruction i) { if (i instanceof CheckCast) { CheckCast o = (CheckCast) i; return targetClass == o.targetClass && object == o.object; } return false; } @Override public void print(LogStream out) { out.print("checkcast("). print(object()). print(","). print(targetClassInstruction()). print(") "). print(CiUtil.toJavaName(targetClass())); } }