Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/FloatingReadNode.java @ 17450:45b45f902bed
removed Node generation (GRAAL-857)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 15 Oct 2014 15:35:33 +0200 |
parents | 845e881ce054 |
children | 498a56d8bb9b |
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/* * Copyright (c) 2011, 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.api.meta.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; /** * A floating read of a value from memory specified in terms of an object base and an object * relative location. This node does not null check the object. */ @NodeInfo public class FloatingReadNode extends FloatingAccessNode implements IterableNodeType, LIRLowerable, Canonicalizable { @OptionalInput(InputType.Memory) MemoryNode lastLocationAccess; public static FloatingReadNode create(ValueNode object, LocationNode location, MemoryNode lastLocationAccess, Stamp stamp) { return new FloatingReadNode(object, location, lastLocationAccess, stamp); } protected FloatingReadNode(ValueNode object, LocationNode location, MemoryNode lastLocationAccess, Stamp stamp) { this(object, location, lastLocationAccess, stamp, null, BarrierType.NONE); } public static FloatingReadNode create(ValueNode object, LocationNode location, MemoryNode lastLocationAccess, Stamp stamp, GuardingNode guard) { return new FloatingReadNode(object, location, lastLocationAccess, stamp, guard); } protected FloatingReadNode(ValueNode object, LocationNode location, MemoryNode lastLocationAccess, Stamp stamp, GuardingNode guard) { this(object, location, lastLocationAccess, stamp, guard, BarrierType.NONE); } public static FloatingReadNode create(ValueNode object, LocationNode location, MemoryNode lastLocationAccess, Stamp stamp, GuardingNode guard, BarrierType barrierType) { return new FloatingReadNode(object, location, lastLocationAccess, stamp, guard, barrierType); } protected FloatingReadNode(ValueNode object, LocationNode location, MemoryNode lastLocationAccess, Stamp stamp, GuardingNode guard, BarrierType barrierType) { super(object, location, stamp, guard, barrierType); this.lastLocationAccess = lastLocationAccess; } public MemoryNode getLastLocationAccess() { return lastLocationAccess; } public void setLastLocationAccess(MemoryNode newlla) { updateUsages(ValueNodeUtil.asNode(lastLocationAccess), ValueNodeUtil.asNode(newlla)); lastLocationAccess = newlla; } @Override public void generate(NodeLIRBuilderTool gen) { Value address = location().generateAddress(gen, gen.getLIRGeneratorTool(), gen.operand(object())); LIRKind readKind = gen.getLIRGeneratorTool().getLIRKind(stamp()); gen.setResult(this, gen.getLIRGeneratorTool().emitLoad(readKind, address, null)); } @Override public Node canonical(CanonicalizerTool tool) { if (object() instanceof PiNode && ((PiNode) object()).getGuard() == getGuard()) { return FloatingReadNode.create(((PiNode) object()).getOriginalNode(), location(), getLastLocationAccess(), stamp(), getGuard(), getBarrierType()); } return ReadNode.canonicalizeRead(this, location(), object(), tool); } @Override public FixedAccessNode asFixedNode() { return graph().add(ReadNode.create(object(), accessLocation(), stamp(), getGuard(), getBarrierType())); } @Override public boolean verify() { MemoryNode lla = getLastLocationAccess(); assert lla == null || lla instanceof MemoryCheckpoint || lla instanceof MemoryProxy || lla instanceof MemoryPhiNode : "lastLocationAccess of " + this + " should be a MemoryCheckpoint, but is " + lla; return super.verify(); } }