Mercurial > hg > truffle
diff graal/com.oracle.max.graal.compiler/src/com/sun/c1x/ir/Return.java @ 2872:0341b6424579
Project renaming.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
---|---|
date | Wed, 08 Jun 2011 08:42:25 +0200 |
parents | graal/GraalCompiler/src/com/sun/c1x/ir/Return.java@14708c03abba |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.max.graal.compiler/src/com/sun/c1x/ir/Return.java Wed Jun 08 08:42:25 2011 +0200 @@ -0,0 +1,101 @@ +/* + * 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.debug.*; +import com.sun.cri.ci.*; + +/** + * The {@code Return} class definition. + */ +public final class Return extends BlockEnd { + + private static final int INPUT_COUNT = 1; + private static final int INPUT_RESULT = 0; + + private static final int SUCCESSOR_COUNT = 1; + private static final int SUCCESSOR_END = 0; + + @Override + protected int inputCount() { + return super.inputCount() + INPUT_COUNT; + } + + @Override + protected int successorCount() { + return super.successorCount() + SUCCESSOR_COUNT; + } + + /** + * The instruction that produces the result for the return. + */ + public Value result() { + return (Value) inputs().get(super.inputCount() + INPUT_RESULT); + } + + public Value setResult(Value n) { + return (Value) inputs().set(super.inputCount() + INPUT_RESULT, n); + } + + @Override + public Instruction next() { + return null; + } + + /** + * Constructs a new Return instruction. + * @param result the instruction producing the result for this return; {@code null} if this + * is a void return + * @param graph + */ + public Return(Value result, Graph graph) { + super(result == null ? CiKind.Void : result.kind, 0, INPUT_COUNT, SUCCESSOR_COUNT, graph); + setResult(result); + } + + // for copying + private Return(CiKind kind, Graph graph) { + super(kind, 0, INPUT_COUNT, SUCCESSOR_COUNT, graph); + } + + @Override + public void accept(ValueVisitor v) { + v.visitReturn(this); + } + + @Override + public void print(LogStream out) { + if (result() == null) { + out.print("return"); + } else { + out.print(kind.typeChar).print("return ").print(result()); + } + } + + @Override + public Node copy(Graph into) { + Return x = new Return(kind, into); + return x; + } +}