Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/InstanceOfDynamicNode.java @ 15018:db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
author | Christian Wimmer <christian.wimmer@oracle.com> |
---|---|
date | Mon, 07 Apr 2014 16:09:17 -0700 |
parents | da2431cc1506 |
children | 61363577a184 |
line wrap: on
line source
/* * 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.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * The {@code InstanceOfDynamicNode} represents a type check where the type being checked is not * known at compile time. This is used, for instance, to intrinsify {@link Class#isInstance(Object)} * . */ public final class InstanceOfDynamicNode extends LogicNode implements Canonicalizable, Lowerable { @Input private ValueNode object; @Input private ValueNode mirror; /** * @param mirror the {@link Class} value representing the target target type of the test * @param object the object being tested */ public InstanceOfDynamicNode(ValueNode mirror, ValueNode object) { this.mirror = mirror; this.object = object; assert mirror.getKind() == Kind.Object : mirror.getKind(); assert ObjectStamp.isExactType(mirror); assert ObjectStamp.typeOrNull(mirror).getName().equals("Ljava/lang/Class;"); } @Override public void lower(LoweringTool tool) { tool.getLowerer().lower(this, tool); } @Override public Node canonical(CanonicalizerTool tool) { assert object() != null : this; if (mirror().isConstant()) { ResolvedJavaType t = tool.getConstantReflection().asJavaType(mirror().asConstant()); if (t != null) { if (t.isPrimitive()) { return LogicConstantNode.contradiction(graph()); } else { return graph().unique(new InstanceOfNode(t, object(), null)); } } } return this; } public ValueNode object() { return object; } public ValueNode mirror() { return mirror; } }