Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/InstanceOfDynamicNode.java @ 23394:964f28c04d7b default tip
Don't fill the code cache with nmethods from CTW
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Fri, 05 Feb 2016 22:48:36 -0800 |
parents | 615f3bbbb174 |
children |
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/* * Copyright (c) 2009, 2015, 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 jdk.vm.ci.meta.ConstantReflectionProvider; import jdk.vm.ci.meta.JavaKind; import jdk.vm.ci.meta.ResolvedJavaType; import com.oracle.graal.graph.NodeClass; import com.oracle.graal.graph.spi.Canonicalizable; import com.oracle.graal.graph.spi.CanonicalizerTool; import com.oracle.graal.nodeinfo.NodeInfo; import com.oracle.graal.nodes.LogicConstantNode; import com.oracle.graal.nodes.LogicNode; import com.oracle.graal.nodes.ValueNode; import com.oracle.graal.nodes.spi.Lowerable; import com.oracle.graal.nodes.spi.LoweringTool; /** * 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)} * . */ @NodeInfo public class InstanceOfDynamicNode extends LogicNode implements Canonicalizable.Binary<ValueNode>, Lowerable { public static final NodeClass<InstanceOfDynamicNode> TYPE = NodeClass.create(InstanceOfDynamicNode.class); @Input ValueNode object; @Input ValueNode mirror; public static LogicNode create(ConstantReflectionProvider constantReflection, ValueNode mirror, ValueNode object) { LogicNode synonym = findSynonym(constantReflection, object, mirror); if (synonym != null) { return synonym; } return new InstanceOfDynamicNode(mirror, object); } public InstanceOfDynamicNode(ValueNode mirror, ValueNode object) { super(TYPE); this.mirror = mirror; this.object = object; assert mirror.getStackKind() == JavaKind.Object : mirror.getStackKind(); } @Override public void lower(LoweringTool tool) { tool.getLowerer().lower(this, tool); } private static LogicNode findSynonym(ConstantReflectionProvider constantReflection, ValueNode forObject, ValueNode forMirror) { if (forMirror.isConstant()) { ResolvedJavaType t = constantReflection.asJavaType(forMirror.asConstant()); if (t != null) { if (t.isPrimitive()) { return LogicConstantNode.contradiction(); } else { return InstanceOfNode.create(t, forObject, null); } } } return null; } public LogicNode canonical(CanonicalizerTool tool, ValueNode forObject, ValueNode forMirror) { LogicNode res = findSynonym(tool.getConstantReflection(), forObject, forMirror); if (res == null) { res = this; } return res; } public ValueNode object() { return object; } public ValueNode mirror() { return mirror; } public ValueNode getX() { return object; } public ValueNode getY() { return mirror; } }