Mercurial > hg > graal-compiler
view graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/nodes/AssertionNode.java @ 17327:655f3e6b467b
made all Node data (i.e. non-edge) fields non-final and protected to support generating a copy "constructor" using Unsafe.allocateInstance
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 03 Oct 2014 14:19:31 +0200 |
parents | ffb974bef674 |
children | c9bb0da795d4 |
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/* * Copyright (c) 2014, 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.replacements.nodes; import com.oracle.graal.compiler.common.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; /** * Assertion nodes will go away as soon as the value evaluates to true. Compile-time assertions will * fail if this has not happened by the time the node is lowered to LIR, while runtime assertions * may need to insert a check. */ @NodeInfo public class AssertionNode extends FixedWithNextNode implements Lowerable, Canonicalizable, LIRLowerable { @Input ValueNode value; protected boolean compileTimeAssertion; protected String message; public static AssertionNode create(boolean compileTimeAssertion, ValueNode value, String message) { return USE_GENERATED_NODES ? new AssertionNodeGen(compileTimeAssertion, value, message) : new AssertionNode(compileTimeAssertion, value, message); } protected AssertionNode(boolean compileTimeAssertion, ValueNode value, String message) { super(StampFactory.forVoid()); this.value = value; this.compileTimeAssertion = compileTimeAssertion; this.message = message; } public ValueNode value() { return value; } public String message() { return message; } @Override public Node canonical(CanonicalizerTool tool) { if (value.isConstant() && value.asConstant().asInt() != 0) { return null; } /* * Assertions with a constant "false" value do not immediately cause an error, since they * may be unreachable and could thus be removed by later optimizations. */ return this; } public void lower(LoweringTool tool) { if (!compileTimeAssertion) { tool.getLowerer().lower(this, tool); } } public void generate(NodeLIRBuilderTool generator) { assert compileTimeAssertion; if (value.isConstant() && value.asConstant().asInt() == 0) { throw new GraalInternalError("%s: failed compile-time assertion: %s", this, message); } else { throw new GraalInternalError("%s: failed compile-time assertion (value %s): %s", this, value, message); } } @SuppressWarnings("unused") @NodeIntrinsic public static void assertion(@ConstantNodeParameter boolean compileTimeAssertion, boolean value, @ConstantNodeParameter String message) { assert value : message; } }