Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/snippets/ArrayCopyNode.java @ 7530:5e3d1a68664e
applied mx eclipseformat to all Java files
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Wed, 23 Jan 2013 16:34:57 +0100 |
parents | b5316e551965 |
children | 9e2cbc932853 |
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/* * Copyright (c) 2013, 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.hotspot.snippets; import com.oracle.graal.api.meta.*; import com.oracle.graal.debug.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.Node.IterableNodeType; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.virtual.*; import com.oracle.graal.phases.common.*; import com.oracle.graal.snippets.nodes.*; public class ArrayCopyNode extends MacroNode implements Virtualizable, IterableNodeType, Lowerable { public ArrayCopyNode(InvokeNode invoke) { super(invoke); } public ValueNode src() { return arguments.get(0); } public ValueNode srcPos() { return arguments.get(1); } public ValueNode dest() { return arguments.get(2); } public ValueNode destPos() { return arguments.get(3); } public ValueNode length() { return arguments.get(4); } @Override public void lower(LoweringTool tool) { ResolvedJavaMethod snippetMethod = null; ResolvedJavaType srcType = src().objectStamp().type(); ResolvedJavaType destType = dest().objectStamp().type(); if (srcType != null && srcType.isArray() && destType != null && destType.isArray()) { Kind componentKind = srcType.getComponentType().getKind(); if (componentKind != Kind.Object) { if (srcType.getComponentType() == destType.getComponentType()) { snippetMethod = tool.getRuntime().lookupJavaMethod(ArrayCopySnippets.getSnippetForKind(componentKind)); } } else if (destType.getComponentType().isAssignableFrom(srcType.getComponentType()) && dest().objectStamp().isExactType()) { snippetMethod = tool.getRuntime().lookupJavaMethod(ArrayCopySnippets.getSnippetForKind(Kind.Object)); } } if (snippetMethod == null) { snippetMethod = tool.getRuntime().lookupJavaMethod(ArrayCopySnippets.increaseGenericCallCounterMethod); // we will call the generic method. the generic snippet will only increase the counter, // not call the actual // method. therefore we create a second invoke here. ((StructuredGraph) graph()).addAfterFixed(this, createInvoke()); } else { Debug.log("%s > Intrinsify (%s)", Debug.currentScope(), snippetMethod.getSignature().getParameterType(0, snippetMethod.getDeclaringClass()).getComponentType()); } if (snippetMethod != null) { StructuredGraph snippetGraph = (StructuredGraph) snippetMethod.getCompilerStorage().get(Graph.class); assert snippetGraph != null : "ArrayCopySnippets should be installed"; InvokeNode invoke = replaceWithInvoke(); InliningUtil.inline(invoke, snippetGraph, false); } else { super.lower(tool); } } @Override public void virtualize(VirtualizerTool tool) { if (srcPos().isConstant() && destPos().isConstant() && length().isConstant()) { int srcPos = srcPos().asConstant().asInt(); int destPos = destPos().asConstant().asInt(); int length = length().asConstant().asInt(); State srcState = tool.getObjectState(src()); State destState = tool.getObjectState(dest()); if (srcState != null && srcState.getState() == EscapeState.Virtual && destState != null && destState.getState() == EscapeState.Virtual) { VirtualObjectNode srcVirtual = srcState.getVirtualObject(); VirtualObjectNode destVirtual = destState.getVirtualObject(); if (length < 0) { return; } if (srcPos < 0 || srcPos + length > srcVirtual.entryCount()) { return; } if (destPos < 0 || destPos + length > destVirtual.entryCount()) { return; } ResolvedJavaType destComponentType = destVirtual.type().getComponentType(); if (destComponentType.getKind() == Kind.Object) { for (int i = 0; i < length; i++) { if (!destComponentType.isAssignableFrom(srcState.getEntry(srcPos + i).objectStamp().javaType(tool.getMetaAccessProvider()))) { return; } } } for (int i = 0; i < length; i++) { tool.setVirtualEntry(destState, destPos + i, srcState.getEntry(srcPos + i)); } tool.delete(); Debug.log("virtualized arraycopyf(%s, %d, %s, %d, %d)", src(), srcPos, dest(), destPos, length); } } } }