Mercurial > hg > graal-compiler
view graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/nodes/AssumptionNode.java @ 19800:3362ba500371
Connect required Assumptions with answer to CHA query
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Wed, 11 Mar 2015 17:32:04 -0700 |
parents | 8fc336a04d77 |
children |
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/* * Copyright (c) 2013, 2015, 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.truffle.nodes; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.api.runtime.*; import com.oracle.graal.compiler.common.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.util.*; import com.oracle.graal.replacements.nodes.*; import com.oracle.graal.truffle.*; @NodeInfo public final class AssumptionNode extends MacroNode implements Simplifiable { public static final NodeClass<AssumptionNode> TYPE = NodeClass.create(AssumptionNode.class); public AssumptionNode(Invoke invoke) { super(TYPE, invoke); assert super.arguments.size() == 1; } private ValueNode getAssumption() { return arguments.first(); } private static SnippetReflectionProvider getSnippetReflection() { /* * This class requires access to the objects encapsulated in Constants, and therefore breaks * the compiler-VM separation of object constants. */ return Graal.getRequiredCapability(SnippetReflectionProvider.class); } @Override public void lower(LoweringTool tool) { throw new GraalInternalError(GraphUtil.approxSourceException(this, new RuntimeException("assumption could not be evaluated to a constant"))); } @Override public void simplify(SimplifierTool tool) { ValueNode assumption = getAssumption(); Assumptions assumptions = graph().getAssumptions(); if (assumption.isConstant()) { JavaConstant c = assumption.asJavaConstant(); assert c.getKind() == Kind.Object; Object object = getSnippetReflection().asObject(Object.class, c); OptimizedAssumption assumptionObject = (OptimizedAssumption) object; StructuredGraph graph = graph(); if (assumptionObject.isValid()) { assumptions.record(new AssumptionValidAssumption(assumptionObject)); if (super.getReturnType().getKind() == Kind.Boolean) { graph.replaceFixedWithFloating(this, ConstantNode.forBoolean(true, graph())); } else { graph.removeFixed(this); } } else { if (super.getReturnType().getKind() == Kind.Boolean) { graph.replaceFixedWithFloating(this, ConstantNode.forBoolean(false, graph())); } else { tool.deleteBranch(this.next()); this.replaceAndDelete(graph.add(new DeoptimizeNode(DeoptimizationAction.InvalidateRecompile, DeoptimizationReason.None))); } } } } }