/*
* Copyright (c) 2016, 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.truffle.nodes.frame;
import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0;
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.ValueNode;
import org.graalvm.compiler.nodes.spi.Virtualizable;
import org.graalvm.compiler.nodes.spi.VirtualizerTool;
import org.graalvm.compiler.nodes.virtual.VirtualObjectNode;
import org.graalvm.compiler.truffle.FrameWithoutBoxing;
import com.oracle.truffle.api.frame.FrameSlot;
@NodeInfo(cycles = CYCLES_0, size = SIZE_0)
public final class VirtualFrameSetNode extends VirtualFrameAccessorNode implements Virtualizable {
public static final NodeClass<VirtualFrameSetNode> TYPE = NodeClass.create(VirtualFrameSetNode.class);
@Input private ValueNode value;
public VirtualFrameSetNode(NewFrameNode frame, FrameSlot frameSlot, int accessTag, ValueNode value) {
super(TYPE, StampFactory.forVoid(), frame, frameSlot, accessTag);
this.value = value;
}
@Override
public void virtualize(VirtualizerTool tool) {
ValueNode tagAlias = tool.getAlias(frame.virtualFrameTagArray);
ValueNode dataAlias = tool.getAlias(accessTag == FrameWithoutBoxing.OBJECT_TAG ? frame.virtualFrameObjectArray : frame.virtualFramePrimitiveArray);
if (tagAlias instanceof VirtualObjectNode && dataAlias instanceof VirtualObjectNode) {
VirtualObjectNode tagVirtual = (VirtualObjectNode) tagAlias;
VirtualObjectNode dataVirtual = (VirtualObjectNode) dataAlias;
int frameSlotIndex = getFrameSlotIndex();
if (frameSlotIndex < tagVirtual.entryCount() && frameSlotIndex < dataVirtual.entryCount()) {
tool.setVirtualEntry(tagVirtual, frameSlotIndex, getConstant(accessTag), false);
ValueNode dataEntry = tool.getEntry(dataVirtual, frameSlotIndex);
if (dataEntry.getStackKind() == value.getStackKind()) {
tool.setVirtualEntry(dataVirtual, frameSlotIndex, value, true);
tool.delete();
return;
}
}
}
/*
* Deoptimization is our only option here. We cannot go back to a UnsafeStoreNode because we
* do not have a FrameState to use for the memory store.
*/
insertDeoptimization(tool);
}
}