Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/memory/WriteNode.java @ 21783:a858c5f56d8a
Introduce AddressNode to represent pointer arithmetic, remove LocationNode.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Mon, 08 Jun 2015 18:47:58 +0200 |
parents | 47bebae7454f |
children | db885c930362 |
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/* * Copyright (c) 2011, 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.nodes.memory; 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.extended.*; import com.oracle.graal.nodes.memory.address.*; import com.oracle.graal.nodes.memory.address.AddressNode.Address; import com.oracle.graal.nodes.spi.*; import com.oracle.jvmci.common.*; import com.oracle.jvmci.meta.*; /** * Writes a given {@linkplain #value() value} a {@linkplain FixedAccessNode memory location}. */ @NodeInfo public final class WriteNode extends AbstractWriteNode implements LIRLowerable, Simplifiable, Virtualizable { public static final NodeClass<WriteNode> TYPE = NodeClass.create(WriteNode.class); private WriteNode(ValueNode address, LocationIdentity location, ValueNode value, BarrierType barrierType) { this((AddressNode) address, location, value, barrierType); } public WriteNode(AddressNode address, LocationIdentity location, ValueNode value, BarrierType barrierType) { super(TYPE, address, location, value, barrierType); } public WriteNode(AddressNode address, LocationIdentity location, ValueNode value, BarrierType barrierType, boolean initialization) { super(TYPE, address, location, value, barrierType, initialization); } public WriteNode(AddressNode address, LocationIdentity location, ValueNode value, BarrierType barrierType, GuardingNode guard, boolean initialization) { super(TYPE, address, location, value, barrierType, guard, initialization); } @Override public void generate(NodeLIRBuilderTool gen) { LIRKind writeKind = gen.getLIRGeneratorTool().getLIRKind(value().stamp()); gen.getLIRGeneratorTool().emitStore(writeKind, gen.operand(address), gen.operand(value()), gen.state(this)); } @Override public void simplify(SimplifierTool tool) { if (getAddress() instanceof OffsetAddressNode) { OffsetAddressNode objAddress = (OffsetAddressNode) getAddress(); if (objAddress.getBase() instanceof PiNode && ((PiNode) objAddress.getBase()).getGuard() == getGuard()) { OffsetAddressNode newAddress = graph().unique(new OffsetAddressNode(((PiNode) objAddress.getBase()).getOriginalNode(), objAddress.getOffset())); setAddress(newAddress); tool.addToWorkList(newAddress); } } } @NodeIntrinsic public static native void writeMemory(Address address, @ConstantNodeParameter LocationIdentity location, Object value, @ConstantNodeParameter BarrierType barrierType); @Override public void virtualize(VirtualizerTool tool) { throw JVMCIError.shouldNotReachHere("unexpected WriteNode before PEA"); } public boolean canNullCheck() { return true; } }