Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/ConstantBindingParameterPlugin.java @ 19821:87736c089259
refactored graph builder plugins to be top level interfaces
author | Doug Simon <doug.simon@oracle.com> |
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date | Sun, 15 Mar 2015 11:48:14 +0100 |
parents | 4d33cd6e0c8f |
children | 48c1ebd24120 |
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/* * Copyright (c) 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.replacements; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graphbuilderconf.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.calc.*; /** * A {@link ParameterPlugin} that binds constant values to some parameters. */ public class ConstantBindingParameterPlugin implements ParameterPlugin { private final Object[] constantArgs; private final ParameterPlugin delegate; private final MetaAccessProvider metaAccess; private final SnippetReflectionProvider snippetReflection; /** * Creates a plugin that will create {@link ConstantNode}s for each parameter with an index * equal to that of a non-null object in {@code constantArgs} (from which the * {@link ConstantNode} is created if it isn't already a {@link ConstantNode}). For all other * parameter indexes, {@code delegate} is applied if it is non-null. */ public ConstantBindingParameterPlugin(Object[] constantArgs, ParameterPlugin delegate, MetaAccessProvider metaAccess, SnippetReflectionProvider snippetReflection) { this.constantArgs = constantArgs; this.delegate = delegate; this.metaAccess = metaAccess; this.snippetReflection = snippetReflection; } public FloatingNode interceptParameter(GraphBuilderContext b, int index, Stamp stamp) { Object arg = constantArgs[index]; if (arg != null) { ConstantNode constantNode; if (arg instanceof ConstantNode) { constantNode = (ConstantNode) arg; } else if (arg instanceof Constant) { constantNode = ConstantNode.forConstant(stamp, (Constant) arg, metaAccess); } else { constantNode = ConstantNode.forConstant(snippetReflection.forBoxed(stamp.getStackKind(), arg), metaAccess); } return constantNode; } if (delegate != null) { return delegate.interceptParameter(b, index, stamp); } return null; } }