Mercurial > hg > truffle
view graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/nodes/MacroNode.java @ 12052:0afe7370260c
refactored constantEquals(), lookupArrayLength() and readUnsafeConstant() out of MetaAccessProvider into ConstantReflectionProvider (GRAAL-511)
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 11 Oct 2013 12:19:09 +0200 |
parents | 0fc653a9e019 |
children | f53dc8bbb88c |
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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.replacements.nodes; import static java.lang.reflect.Modifier.*; import java.lang.reflect.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.debug.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.nodes.java.*; import com.oracle.graal.nodes.java.MethodCallTargetNode.InvokeKind; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.phases.common.*; import com.oracle.graal.phases.tiers.*; public class MacroNode extends AbstractStateSplit implements Lowerable, MemoryCheckpoint.Single { @Input protected final NodeInputList<ValueNode> arguments; private final int bci; private final ResolvedJavaMethod targetMethod; private final JavaType returnType; protected MacroNode(Invoke invoke) { super(invoke.asNode().stamp(), invoke.stateAfter()); MethodCallTargetNode methodCallTarget = (MethodCallTargetNode) invoke.callTarget(); this.arguments = new NodeInputList<>(this, methodCallTarget.arguments()); this.bci = invoke.bci(); this.targetMethod = methodCallTarget.targetMethod(); this.returnType = methodCallTarget.returnType(); } public int getBci() { return bci; } public ResolvedJavaMethod getTargetMethod() { return targetMethod; } public JavaType getReturnType() { return returnType; } /** * Gets a snippet to be used for lowering this macro node. The returned graph (if non-null) must * have been {@linkplain #lowerReplacement(StructuredGraph, LoweringTool) lowered}. */ @SuppressWarnings("unused") protected StructuredGraph getLoweredSnippetGraph(LoweringTool tool) { return null; } /** * Gets a normal method substitution to be used for lowering this macro node. This is only * called if {@link #getLoweredSnippetGraph(LoweringTool)} returns null. The returned graph (if * non-null) must have been {@linkplain #lowerReplacement(StructuredGraph, LoweringTool) * lowered}. */ protected StructuredGraph getLoweredSubstitutionGraph(LoweringTool tool) { StructuredGraph methodSubstitution = tool.getReplacements().getMethodSubstitution(getTargetMethod()); if (methodSubstitution != null) { return lowerReplacement(methodSubstitution.copy(), tool); } return null; } /** * Applies {@linkplain LoweringPhase lowering} to a replacement graph. * * @param replacementGraph a replacement (i.e., snippet or method substitution) graph */ protected StructuredGraph lowerReplacement(final StructuredGraph replacementGraph, LoweringTool tool) { replacementGraph.setGuardsStage(graph().getGuardsStage()); final PhaseContext c = new PhaseContext(tool.getMetaAccess(), tool.getCodeCache(), tool.getConstantReflection(), tool.getLowerer(), tool.assumptions(), tool.getReplacements()); Debug.scope("LoweringReplacement", replacementGraph, new Runnable() { public void run() { new LoweringPhase(new CanonicalizerPhase(true)).apply(replacementGraph, c); } }); return replacementGraph; } @Override public void lower(LoweringTool tool) { StructuredGraph replacementGraph = getLoweredSnippetGraph(tool); if (replacementGraph == null) { replacementGraph = getLoweredSubstitutionGraph(tool); } InvokeNode invoke = replaceWithInvoke(); assert invoke.verify(); if (replacementGraph != null) { // Pull out the receiver null check so that a replaced // receiver can be lowered if necessary if (!isStatic(targetMethod.getModifiers())) { ValueNode nonNullReceiver = InliningUtil.nonNullReceiver(invoke); if (nonNullReceiver instanceof Lowerable) { ((Lowerable) nonNullReceiver).lower(tool); } } InliningUtil.inline(invoke, replacementGraph, false); Debug.dump(graph(), "After inlining replacement %s", replacementGraph); } else { invoke.lower(tool); } } private InvokeNode replaceWithInvoke() { InvokeNode invoke = createInvoke(); graph().replaceFixedWithFixed(this, invoke); return invoke; } protected InvokeNode createInvoke() { InvokeKind invokeKind = Modifier.isStatic(targetMethod.getModifiers()) ? InvokeKind.Static : InvokeKind.Special; MethodCallTargetNode callTarget = graph().add(new MethodCallTargetNode(invokeKind, targetMethod, arguments.toArray(new ValueNode[arguments.size()]), returnType)); InvokeNode invoke = graph().add(new InvokeNode(callTarget, bci)); invoke.setStateAfter(stateAfter()); return invoke; } protected void replaceSnippetInvokes(StructuredGraph snippetGraph) { for (MethodCallTargetNode call : snippetGraph.getNodes(MethodCallTargetNode.class)) { Invoke invoke = call.invoke(); if (call.targetMethod() != getTargetMethod()) { throw new GraalInternalError("unexpected invoke %s in snippet", getClass().getSimpleName()); } assert invoke.stateAfter().bci == FrameState.AFTER_BCI; // Here we need to fix the bci of the invoke InvokeNode newInvoke = snippetGraph.add(new InvokeNode(invoke.callTarget(), getBci())); newInvoke.setStateAfter(invoke.stateAfter()); snippetGraph.replaceFixedWithFixed((InvokeNode) invoke.asNode(), newInvoke); } } @Override public LocationIdentity getLocationIdentity() { return LocationIdentity.ANY_LOCATION; } }