| /* |
| * Copyright (c) 2011, 2016, 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 org.graalvm.compiler.nodes.extended; |
| |
| import static org.graalvm.compiler.nodeinfo.InputType.State; |
| import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_3; |
| import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1; |
| |
| import org.graalvm.compiler.core.common.LocationIdentity; |
| import org.graalvm.compiler.core.common.type.StampFactory; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.nodeinfo.NodeInfo; |
| import org.graalvm.compiler.nodes.ConstantNode; |
| import org.graalvm.compiler.nodes.FrameState; |
| import org.graalvm.compiler.nodes.StateSplit; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.java.StoreFieldNode; |
| import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; |
| import org.graalvm.compiler.nodes.spi.Lowerable; |
| import org.graalvm.compiler.nodes.spi.LoweringTool; |
| import org.graalvm.compiler.nodes.spi.Virtualizable; |
| import org.graalvm.compiler.nodes.spi.VirtualizerTool; |
| import org.graalvm.compiler.nodes.virtual.VirtualObjectNode; |
| |
| import jdk.vm.ci.meta.Assumptions; |
| import jdk.vm.ci.meta.JavaConstant; |
| import jdk.vm.ci.meta.JavaKind; |
| import jdk.vm.ci.meta.ResolvedJavaField; |
| |
| /** |
| * Store of a value at a location specified as an offset relative to an object. No null check is |
| * performed before the store. |
| */ |
| @NodeInfo(cycles = CYCLES_3, size = SIZE_1) |
| public final class UnsafeStoreNode extends UnsafeAccessNode implements StateSplit, Lowerable, Virtualizable, MemoryCheckpoint.Single { |
| |
| public static final NodeClass<UnsafeStoreNode> TYPE = NodeClass.create(UnsafeStoreNode.class); |
| @Input ValueNode value; |
| @OptionalInput(State) FrameState stateAfter; |
| |
| public UnsafeStoreNode(ValueNode object, ValueNode offset, ValueNode value, JavaKind accessKind, LocationIdentity locationIdentity) { |
| this(object, offset, value, accessKind, locationIdentity, null); |
| } |
| |
| public UnsafeStoreNode(ValueNode object, ValueNode offset, ValueNode value, JavaKind accessKind, LocationIdentity locationIdentity, FrameState stateAfter) { |
| super(TYPE, StampFactory.forVoid(), object, offset, accessKind, locationIdentity); |
| this.value = value; |
| this.stateAfter = stateAfter; |
| assert accessKind != JavaKind.Void && accessKind != JavaKind.Illegal; |
| } |
| |
| @Override |
| public FrameState stateAfter() { |
| return stateAfter; |
| } |
| |
| @Override |
| public void setStateAfter(FrameState x) { |
| assert x == null || x.isAlive() : "frame state must be in a graph"; |
| updateUsages(stateAfter, x); |
| stateAfter = x; |
| } |
| |
| @Override |
| public boolean hasSideEffect() { |
| return true; |
| } |
| |
| public ValueNode value() { |
| return value; |
| } |
| |
| @Override |
| public void lower(LoweringTool tool) { |
| tool.getLowerer().lower(this, tool); |
| } |
| |
| @Override |
| public void virtualize(VirtualizerTool tool) { |
| ValueNode alias = tool.getAlias(object()); |
| if (alias instanceof VirtualObjectNode) { |
| VirtualObjectNode virtual = (VirtualObjectNode) alias; |
| ValueNode indexValue = tool.getAlias(offset()); |
| if (indexValue.isConstant()) { |
| long off = indexValue.asJavaConstant().asLong(); |
| int entryIndex = virtual.entryIndexForOffset(off, accessKind()); |
| if (entryIndex != -1) { |
| JavaKind entryKind = virtual.entryKind(entryIndex); |
| ValueNode entry = tool.getEntry(virtual, entryIndex); |
| if (entry.getStackKind() == value.getStackKind() || entryKind == accessKind()) { |
| tool.setVirtualEntry(virtual, entryIndex, value(), true); |
| tool.delete(); |
| } else { |
| if ((accessKind() == JavaKind.Long || accessKind() == JavaKind.Double) && entryKind == JavaKind.Int) { |
| int nextIndex = virtual.entryIndexForOffset(off + 4, entryKind); |
| if (nextIndex != -1) { |
| JavaKind nextKind = virtual.entryKind(nextIndex); |
| if (nextKind == JavaKind.Int) { |
| tool.setVirtualEntry(virtual, entryIndex, value(), true); |
| tool.setVirtualEntry(virtual, nextIndex, ConstantNode.forConstant(JavaConstant.forIllegal(), tool.getMetaAccessProvider(), graph()), true); |
| tool.delete(); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| @Override |
| protected ValueNode cloneAsFieldAccess(Assumptions assumptions, ResolvedJavaField field) { |
| return new StoreFieldNode(object(), field, value(), stateAfter()); |
| } |
| |
| @Override |
| protected ValueNode cloneAsArrayAccess(ValueNode location, LocationIdentity identity) { |
| return new UnsafeStoreNode(object(), location, value, accessKind(), identity, stateAfter()); |
| } |
| |
| public FrameState getState() { |
| return stateAfter; |
| } |
| } |