Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/FixedAccessNode.java @ 14976:82399ac30721
make implicit null checking optional for Access nodes (fixes CAS crash)
author | Lukas Stadler <lukas.stadler@oracle.com> |
---|---|
date | Fri, 04 Apr 2014 17:06:44 +0200 |
parents | b602356a9cfc |
children | 27c04ee36dcb |
line wrap: on
line source
/* * Copyright (c) 2011, 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.type.*; /** * Accesses a value at an memory address specified by an {@linkplain #object object} and a * {@linkplain #accessLocation() location}. The access does not include a null check on the object. */ public abstract class FixedAccessNode extends DeoptimizingFixedWithNextNode implements Access, GuardingNode { @Input private GuardingNode guard; @Input private ValueNode object; @Input private ValueNode location; private boolean nullCheck; private BarrierType barrierType; private boolean compressible; public ValueNode object() { return object; } protected void setObject(ValueNode x) { updateUsages(object, x); object = x; } public LocationNode location() { return (LocationNode) location; } public LocationNode accessLocation() { return (LocationNode) location; } public boolean getNullCheck() { return nullCheck; } public void setNullCheck(boolean check) { this.nullCheck = check; } public FixedAccessNode(ValueNode object, ValueNode location, Stamp stamp) { this(object, location, stamp, null, BarrierType.NONE, false); } public FixedAccessNode(ValueNode object, ValueNode location, Stamp stamp, BarrierType barrierType, boolean compressible) { this(object, location, stamp, null, barrierType, compressible); } public FixedAccessNode(ValueNode object, ValueNode location, Stamp stamp, GuardingNode guard, BarrierType barrierType, boolean compressible) { super(stamp); this.object = object; this.location = location; this.guard = guard; this.barrierType = barrierType; this.compressible = compressible; } @Override public boolean canDeoptimize() { return nullCheck; } @Override public GuardingNode getGuard() { return guard; } @Override public void setGuard(GuardingNode guard) { updateUsages(this.guard == null ? null : this.guard.asNode(), guard == null ? null : guard.asNode()); this.guard = guard; } @Override public BarrierType getBarrierType() { return barrierType; } @Override public boolean isCompressible() { return compressible; } }