Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/ConstantNode.java @ 12416:9ad59f7fd57e
ConstantNode methods should not throw InternalError
author | twisti |
---|---|
date | Mon, 14 Oct 2013 19:46:29 -0700 |
parents | 23ccaa863eda |
children | 66efe95dd46b |
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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.oracle.graal.nodes; import java.util.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.calc.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * The {@code ConstantNode} represents a constant such as an integer value, long, float, object * reference, address, etc. */ @NodeInfo(shortName = "Const", nameTemplate = "Const({p#rawvalue})") public class ConstantNode extends FloatingNode implements LIRLowerable { public final Constant value; protected ConstantNode(Constant value) { super(StampFactory.forConstant(value)); this.value = value; } /** * Constructs a new ConstantNode representing the specified constant. * * @param value the constant */ protected ConstantNode(Constant value, MetaAccessProvider metaAccess) { super(StampFactory.forConstant(value, metaAccess)); this.value = value; } @Override public void generate(LIRGeneratorTool gen) { if (gen.canInlineConstant(value) || onlyUsedInVirtualState()) { gen.setResult(this, value); } else { gen.setResult(this, gen.emitMove(value)); } } private boolean onlyUsedInVirtualState() { for (Node n : this.usages()) { if (n instanceof VirtualState) { // Only virtual usage. } else { return false; } } return true; } public static ConstantNode forConstant(Constant constant, MetaAccessProvider metaAccess, Graph graph) { if (constant.getKind() == Kind.Object) { return graph.unique(new ConstantNode(constant, metaAccess)); } else { return graph.unique(new ConstantNode(constant)); } } /** * Returns a node for a primitive constant. */ public static ConstantNode forPrimitive(Constant constant, Graph graph) { assert constant.getKind() != Kind.Object; return forConstant(constant, null, graph); } /** * Returns a node for a double constant. * * @param d the double value for which to create the instruction * @param graph * @return a node for a double constant */ public static ConstantNode forDouble(double d, Graph graph) { return graph.unique(new ConstantNode(Constant.forDouble(d))); } /** * Returns a node for a float constant. * * @param f the float value for which to create the instruction * @param graph * @return a node for a float constant */ public static ConstantNode forFloat(float f, Graph graph) { return graph.unique(new ConstantNode(Constant.forFloat(f))); } /** * Returns a node for an long constant. * * @param i the long value for which to create the instruction * @param graph * @return a node for an long constant */ public static ConstantNode forLong(long i, Graph graph) { return graph.unique(new ConstantNode(Constant.forLong(i))); } /** * Returns a node for an integer constant. * * @param i the integer value for which to create the instruction * @param graph * @return a node for an integer constant */ public static ConstantNode forInt(int i, Graph graph) { return graph.unique(new ConstantNode(Constant.forInt(i))); } /** * Returns a node for a boolean constant. * * @param i the boolean value for which to create the instruction * @param graph * @return a node representing the boolean */ public static ConstantNode forBoolean(boolean i, Graph graph) { return graph.unique(new ConstantNode(Constant.forBoolean(i))); } /** * Returns a node for a byte constant. * * @param i the byte value for which to create the instruction * @param graph * @return a node representing the byte */ public static ConstantNode forByte(byte i, Graph graph) { return graph.unique(new ConstantNode(Constant.forByte(i))); } /** * Returns a node for a char constant. * * @param i the char value for which to create the instruction * @param graph * @return a node representing the char */ public static ConstantNode forChar(char i, Graph graph) { return graph.unique(new ConstantNode(Constant.forChar(i))); } /** * Returns a node for a short constant. * * @param i the short value for which to create the instruction * @param graph * @return a node representing the short */ public static ConstantNode forShort(short i, Graph graph) { return graph.unique(new ConstantNode(Constant.forShort(i))); } /** * Returns a node for an object constant. * * @param o the object value for which to create the instruction * @param graph * @return a node representing the object */ public static ConstantNode forObject(Object o, MetaAccessProvider metaAccess, Graph graph) { assert !(o instanceof Constant) : "wrapping a Constant into a Constant"; return graph.unique(new ConstantNode(Constant.forObject(o), metaAccess)); } public static ConstantNode forIntegerKind(Kind kind, long value, Graph graph) { switch (kind) { case Byte: case Short: case Int: return ConstantNode.forInt((int) value, graph); case Long: return ConstantNode.forLong(value, graph); default: throw GraalInternalError.shouldNotReachHere("unknown kind " + kind); } } public static ConstantNode forFloatingKind(Kind kind, double value, Graph graph) { switch (kind) { case Float: return ConstantNode.forFloat((float) value, graph); case Double: return ConstantNode.forDouble(value, graph); default: throw GraalInternalError.shouldNotReachHere("unknown kind " + kind); } } public static ConstantNode defaultForKind(Kind kind, Graph graph) { switch (kind) { case Boolean: return ConstantNode.forBoolean(false, graph); case Byte: case Char: case Short: case Int: return ConstantNode.forInt(0, graph); case Double: return ConstantNode.forDouble(0.0, graph); case Float: return ConstantNode.forFloat(0.0f, graph); case Long: return ConstantNode.forLong(0L, graph); case Object: return ConstantNode.forObject(null, null, graph); default: return null; } } @Override public Map<Object, Object> getDebugProperties(Map<Object, Object> map) { Map<Object, Object> properties = super.getDebugProperties(map); properties.put("rawvalue", value.getKind() == Kind.Object ? value.getKind().format(value.asBoxedValue()) : value.asBoxedValue()); return properties; } @Override public String toString(Verbosity verbosity) { if (verbosity == Verbosity.Name) { return super.toString(Verbosity.Name) + "(" + value.getKind().format(value.asBoxedValue()) + ")"; } else { return super.toString(verbosity); } } }