Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/JavaReadNode.java @ 14976:82399ac30721
make implicit null checking optional for Access nodes (fixes CAS crash)
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Fri, 04 Apr 2014 17:06:44 +0200 |
parents | b14cb2d9253d |
children | 27c04ee36dcb |
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/* * Copyright (c) 2014, 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.extended; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * Read a raw memory location according to Java field or array read semantics. It will perform read * barriers, implicit conversions and optionally oop uncompression. */ public final class JavaReadNode extends FixedAccessNode implements Lowerable { public JavaReadNode(ValueNode object, LocationNode location, BarrierType barrierType, boolean compressible) { super(object, location, StampFactory.forKind(location.getValueKind()), barrierType, compressible); } public void lower(LoweringTool tool) { tool.getLowerer().lower(this, tool); } public boolean canNullCheck() { return true; } }