Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/UnsafeStoreNode.java @ 9793:b4f12c603be5
added support for the runtime to specify for each foreign call whether it is re-executable and what memory locations it kills
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 22 May 2013 16:27:25 +0200 |
parents | 06dc2d2324d6 |
children | 97e8cabe9064 |
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/* * 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 static com.oracle.graal.api.meta.LocationIdentity.*; import static com.oracle.graal.graph.UnsafeAccess.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.java.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * Store of a value at a location specified as an offset relative to an object. No null check is * performed before the store. */ public class UnsafeStoreNode extends UnsafeAccessNode implements StateSplit, Lowerable, Virtualizable, Canonicalizable, MemoryCheckpoint { @Input private ValueNode value; @Input(notDataflow = true) private FrameState stateAfter; public UnsafeStoreNode(ValueNode object, int displacement, ValueNode offset, ValueNode value, Kind accessKind) { this(StampFactory.forVoid(), object, displacement, offset, value, accessKind); } public UnsafeStoreNode(Stamp stamp, ValueNode object, int displacement, ValueNode offset, ValueNode value, Kind accessKind) { super(stamp, object, displacement, offset, accessKind); assert accessKind != Kind.Void && accessKind != Kind.Illegal; this.value = value; } public FrameState stateAfter() { return stateAfter; } public void setStateAfter(FrameState x) { assert x == null || x.isAlive() : "frame state must be in a graph"; updateUsages(stateAfter, x); stateAfter = x; } public boolean hasSideEffect() { return true; } public ValueNode value() { return value; } @Override public void lower(LoweringTool tool, LoweringType loweringType) { tool.getRuntime().lower(this, tool); } @Override public LocationIdentity[] getLocationIdentities() { return new LocationIdentity[]{ANY_LOCATION}; } @Override public void virtualize(VirtualizerTool tool) { State state = tool.getObjectState(object()); if (state != null && state.getState() == EscapeState.Virtual) { ValueNode indexValue = tool.getReplacedValue(offset()); if (indexValue.isConstant()) { long offset = indexValue.asConstant().asLong() + displacement(); int entryIndex = state.getVirtualObject().entryIndexForOffset(offset); if (entryIndex != -1 && state.getVirtualObject().entryKind(entryIndex) == accessKind()) { tool.setVirtualEntry(state, entryIndex, value()); tool.delete(); } } } } @Override public ValueNode canonical(CanonicalizerTool tool) { if (offset().isConstant()) { long constantOffset = offset().asConstant().asLong(); if (constantOffset != 0) { int intDisplacement = (int) (constantOffset + displacement()); if (constantOffset == intDisplacement) { Graph graph = this.graph(); return graph.add(new UnsafeStoreNode(this.stamp(), object(), intDisplacement, graph.unique(ConstantNode.forInt(0, graph)), value(), accessKind())); } } else if (object().stamp() instanceof ObjectStamp) { // TODO (gd) remove that once // UnsafeAccess only have an // object base ObjectStamp receiverStamp = object().objectStamp(); if (receiverStamp.nonNull()) { ResolvedJavaType receiverType = receiverStamp.type(); ResolvedJavaField field = receiverType.findInstanceFieldWithOffset(displacement()); if (field != null) { return this.graph().add(new StoreFieldNode(object(), field, value())); } } } } return this; } // specialized on value type until boxing/unboxing is sorted out in intrinsification @SuppressWarnings("unused") @NodeIntrinsic public static void store(Object object, @ConstantNodeParameter int displacement, long offset, Object value, @ConstantNodeParameter Kind kind) { unsafe.putObject(object, offset + displacement, value); } @SuppressWarnings("unused") @NodeIntrinsic public static void store(Object object, @ConstantNodeParameter int displacement, long offset, boolean value, @ConstantNodeParameter Kind kind) { unsafe.putBoolean(object, offset + displacement, value); } @SuppressWarnings("unused") @NodeIntrinsic public static void store(Object object, @ConstantNodeParameter int displacement, long offset, byte value, @ConstantNodeParameter Kind kind) { unsafe.putByte(object, offset + displacement, value); } @SuppressWarnings("unused") @NodeIntrinsic public static void store(Object object, @ConstantNodeParameter int displacement, long offset, char value, @ConstantNodeParameter Kind kind) { unsafe.putChar(object, offset + displacement, value); } @SuppressWarnings("unused") @NodeIntrinsic public static void store(Object object, @ConstantNodeParameter int displacement, long offset, double value, @ConstantNodeParameter Kind kind) { unsafe.putDouble(object, offset + displacement, value); } @SuppressWarnings("unused") @NodeIntrinsic public static void store(Object object, @ConstantNodeParameter int displacement, long offset, float value, @ConstantNodeParameter Kind kind) { unsafe.putFloat(object, offset + displacement, value); } @SuppressWarnings("unused") @NodeIntrinsic public static void store(Object object, @ConstantNodeParameter int displacement, long offset, int value, @ConstantNodeParameter Kind kind) { unsafe.putInt(object, offset + displacement, value); } @SuppressWarnings("unused") @NodeIntrinsic public static void store(Object object, @ConstantNodeParameter int displacement, long offset, long value, @ConstantNodeParameter Kind kind) { unsafe.putLong(object, offset + displacement, value); } @SuppressWarnings("unused") @NodeIntrinsic public static void store(Object object, @ConstantNodeParameter int displacement, long offset, short value, @ConstantNodeParameter Kind kind) { unsafe.putShort(object, offset + displacement, value); } }