Mercurial > hg > graal-compiler
view graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/NonNullParametersPhase.java @ 17376:9928ad27a80e
OopRecorder should check for duplicates
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Wed, 08 Oct 2014 11:48:00 -0700 |
parents | d780f8b87d89 |
children | 61d3cb8e1280 |
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/* * Copyright (c) 2013, 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.phases.common; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.nodes.*; import com.oracle.graal.phases.*; /** * Modifies the stamp of all object {@linkplain ParameterNode parameters} in a graph to denote they * are non-null. This can be used for graphs where the caller null checks all arguments. */ public class NonNullParametersPhase extends Phase { @Override protected void run(StructuredGraph graph) { Stamp nonNull = StampFactory.objectNonNull(); for (ParameterNode param : graph.getNodes(ParameterNode.class)) { if (param.stamp() instanceof ObjectStamp) { ObjectStamp paramStamp = (ObjectStamp) param.stamp(); param.setStamp(paramStamp.join(nonNull)); } } } }