Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/ClassIsAssignableFromNode.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) 2014, 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.ResolvedJavaType; import com.oracle.graal.graph.Node; 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 ClassIsAssignableFromNode} represents a type check against {@link Class} instead of * against instances. This is used, for instance, to intrinsify * {@link Class#isAssignableFrom(Class)} . */ @NodeInfo public final class ClassIsAssignableFromNode extends LogicNode implements Canonicalizable.Binary<ValueNode>, Lowerable { public static final NodeClass<ClassIsAssignableFromNode> TYPE = NodeClass.create(ClassIsAssignableFromNode.class); @Input ValueNode thisClass; @Input ValueNode otherClass; public ClassIsAssignableFromNode(ValueNode thisClass, ValueNode otherClass) { super(TYPE); this.thisClass = thisClass; this.otherClass = otherClass; } public Object getThisClass() { return thisClass; } public Object getOtherClass() { return otherClass; } @Override public ValueNode getX() { return thisClass; } @Override public ValueNode getY() { return otherClass; } @Override public Node canonical(CanonicalizerTool tool, ValueNode forX, ValueNode forY) { if (forX.isConstant() && forY.isConstant()) { ConstantReflectionProvider constantReflection = tool.getConstantReflection(); ResolvedJavaType thisType = constantReflection.asJavaType(forX.asJavaConstant()); ResolvedJavaType otherType = constantReflection.asJavaType(forY.asJavaConstant()); if (thisType != null && otherType != null) { return LogicConstantNode.forBoolean(thisType.isAssignableFrom(otherType)); } } return this; } @Override public void lower(LoweringTool tool) { tool.getLowerer().lower(this, tool); } }