Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/ExceptionObjectNode.java @ 18998:ec0733b5a90a
Allow final modifier on node subclasses and start adding the modifier to leaf classes.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 28 Jan 2015 02:34:14 +0100 |
parents | 480bd3b1adcd |
children | 7e2c87dae93e |
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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.java; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.nodes.spi.*; /** * The entry to an exception handler with the exception coming from a call (as opposed to a local * throw instruction or implicit exception). */ @NodeInfo(allowedUsageTypes = {InputType.Memory}) public final class ExceptionObjectNode extends DispatchBeginNode implements Lowerable, MemoryCheckpoint.Single { public ExceptionObjectNode(MetaAccessProvider metaAccess) { super(StampFactory.declaredNonNull(metaAccess.lookupJavaType(Throwable.class))); } @Override public LocationIdentity getLocationIdentity() { return LocationIdentity.ANY_LOCATION; } @Override public void lower(LoweringTool tool) { if (graph().getGuardsStage() == StructuredGraph.GuardsStage.FIXED_DEOPTS) { /* * Now the lowering to BeginNode+LoadExceptionNode can be performed, since no more * deopts can float in between the begin node and the load exception node. */ LocationIdentity locationsKilledByInvoke = ((InvokeWithExceptionNode) predecessor()).getLocationIdentity(); AbstractBeginNode entry = graph().add(new KillingBeginNode(locationsKilledByInvoke)); LoadExceptionObjectNode loadException = graph().add(new LoadExceptionObjectNode(stamp())); loadException.setStateAfter(stateAfter()); replaceAtUsages(InputType.Value, loadException); graph().replaceFixedWithFixed(this, entry); entry.graph().addAfterFixed(entry, loadException); loadException.lower(tool); } } @Override public boolean verify() { assertTrue(stateAfter() != null, "an exception handler needs a frame state"); return super.verify(); } }