Mercurial > hg > truffle
view graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/nodes/AssertionNode.java @ 21543:93c50cefb9e8
moved GraalInternalError to com.oracle.jvmci.common and renamed it to JVMCIError (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 25 May 2015 23:30:34 +0200 |
parents | 1505cfecbeed |
children |
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/* * Copyright (c) 2014, 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.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.*; import com.oracle.jvmci.common.*; /** * 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 final class AssertionNode extends FixedWithNextNode implements Lowerable, Canonicalizable, LIRLowerable { public static final NodeClass<AssertionNode> TYPE = NodeClass.create(AssertionNode.class); @Input ValueNode value; protected final boolean compileTimeAssertion; protected final String message; public AssertionNode(boolean compileTimeAssertion, ValueNode value, String message) { super(TYPE, 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.asJavaConstant().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()) { if (value.asJavaConstant().asInt() == 0) { throw new JVMCIError("%s: failed compile-time assertion: %s", this, message); } } else { throw new JVMCIError("%s: failed compile-time assertion (value %s): %s", this, value, message); } } @NodeIntrinsic public static native void assertion(@ConstantNodeParameter boolean compileTimeAssertion, boolean value, @ConstantNodeParameter String message); }