Mercurial > hg > truffle
view graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/GraphBuilderContext.java @ 21586:6da76343d830
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 29 May 2015 12:09:07 +0200 |
parents | f41409c6ff26 |
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/* * Copyright (c) 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.graphbuilderconf; import com.oracle.jvmci.code.BailoutException; import com.oracle.jvmci.meta.ResolvedJavaType; import com.oracle.jvmci.meta.Assumptions; import com.oracle.jvmci.meta.ResolvedJavaMethod; import com.oracle.jvmci.meta.ConstantReflectionProvider; import com.oracle.jvmci.meta.Kind; import com.oracle.jvmci.meta.MetaAccessProvider; import com.oracle.jvmci.meta.JavaType; import static com.oracle.jvmci.meta.DeoptimizationAction.*; import static com.oracle.jvmci.meta.DeoptimizationReason.*; import static com.oracle.graal.compiler.common.type.StampFactory.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.nodes.CallTargetNode.InvokeKind; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.calc.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * Used by a {@link GraphBuilderPlugin} to interface with an object that parses the bytecode of a * single {@linkplain #getMethod() method} as part of building a {@linkplain #getGraph() graph} . */ public interface GraphBuilderContext { /** * Raw operation for adding a node to the graph when neither {@link #add} nor * {@link #addPush(Kind, ValueNode)} can be used. * * @return either the node added or an equivalent node */ <T extends ValueNode> T append(T value); /** * Adds the given node to the graph and also adds recursively all referenced inputs. * * @param value the node to be added to the graph * @return either the node added or an equivalent node */ <T extends ValueNode> T recursiveAppend(T value); /** * Pushes a given value to the frame state stack using an explicit kind. This should be used * when {@code value.getKind()} is different from the kind that the bytecode instruction * currently being parsed pushes to the stack. * * @param kind the kind to use when type checking this operation * @param value the value to push to the stack. The value must already have been * {@linkplain #append(ValueNode) appended}. */ void push(Kind kind, ValueNode value); /** * Adds a node to the graph. If the returned node is a {@link StateSplit} with a null * {@linkplain StateSplit#stateAfter() frame state}, the frame state is initialized. * * @param value the value to add to the graph and push to the stack. The {@code value.getKind()} * kind is used when type checking this operation. * @return a node equivalent to {@code value} in the graph */ default <T extends ValueNode> T add(T value) { if (value.graph() != null) { assert !(value instanceof StateSplit) || ((StateSplit) value).stateAfter() != null; return value; } T equivalentValue = append(value); if (equivalentValue instanceof StateSplit) { StateSplit stateSplit = (StateSplit) equivalentValue; if (stateSplit.stateAfter() == null && stateSplit.hasSideEffect()) { setStateAfter(stateSplit); } } return equivalentValue; } /** * Adds a node with a non-void kind to the graph, pushes it to the stack. If the returned node * is a {@link StateSplit} with a null {@linkplain StateSplit#stateAfter() frame state}, the * frame state is initialized. * * @param kind the kind to use when type checking this operation * @param value the value to add to the graph and push to the stack * @return a node equivalent to {@code value} in the graph */ default <T extends ValueNode> T addPush(Kind kind, T value) { T equivalentValue = value.graph() != null ? value : append(value); push(kind, equivalentValue); if (equivalentValue instanceof StateSplit) { StateSplit stateSplit = (StateSplit) equivalentValue; if (stateSplit.stateAfter() == null && stateSplit.hasSideEffect()) { setStateAfter(stateSplit); } } return equivalentValue; } /** * Handles an invocation that a plugin determines can replace the original invocation (i.e., the * one for which the plugin was applied). This applies all standard graph builder processing to * the replaced invocation including applying any relevant plugins. * * @param invokeKind the kind of the replacement invocation * @param targetMethod the target of the replacement invocation * @param args the arguments to the replacement invocation */ void handleReplacedInvoke(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, ValueNode[] args); /** * Intrinsifies an invocation of a given method by inlining the bytecodes of a given * substitution method. * * @param targetMethod the method being intrinsified * @param substitute the intrinsic implementation * @param args the arguments with which to inline the invocation */ void intrinsify(ResolvedJavaMethod targetMethod, ResolvedJavaMethod substitute, ValueNode[] args); StampProvider getStampProvider(); MetaAccessProvider getMetaAccess(); default Assumptions getAssumptions() { return getGraph().getAssumptions(); } ConstantReflectionProvider getConstantReflection(); /** * Gets the graph being constructed. */ StructuredGraph getGraph(); /** * Creates a snap shot of the current frame state with the BCI of the instruction after the one * currently being parsed and assigns it to a given {@linkplain StateSplit#hasSideEffect() side * effect} node. * * @param sideEffect a side effect node just appended to the graph */ void setStateAfter(StateSplit sideEffect); /** * Gets the parsing context for the method that inlines the method being parsed by this context. */ GraphBuilderContext getParent(); /** * Gets the first ancestor parsing context that is not parsing a * {@linkplain #parsingIntrinsic() intrinsic}. */ default GraphBuilderContext getNonIntrinsicAncestor() { GraphBuilderContext ancestor = getParent(); while (ancestor != null && ancestor.parsingIntrinsic()) { ancestor = ancestor.getParent(); } return ancestor; } /** * Gets the method being parsed by this context. */ ResolvedJavaMethod getMethod(); /** * Gets the index of the bytecode instruction currently being parsed. */ int bci(); /** * Gets the kind of invocation currently being parsed. */ InvokeKind getInvokeKind(); /** * Gets the return type of the invocation currently being parsed. */ JavaType getInvokeReturnType(); default Stamp getInvokeReturnStamp() { JavaType returnType = getInvokeReturnType(); if (returnType.getKind() == Kind.Object && returnType instanceof ResolvedJavaType) { return StampFactory.declared((ResolvedJavaType) returnType); } else { return StampFactory.forKind(returnType.getKind()); } } /** * Gets the inline depth of this context. A return value of 0 implies that this is the context * for the parse root. */ default int getDepth() { GraphBuilderContext parent = getParent(); return parent == null ? 0 : 1 + parent.getDepth(); } /** * Determines if this parsing context is within the bytecode of an intrinsic or a method inlined * by an intrinsic. */ default boolean parsingIntrinsic() { return getIntrinsic() != null; } /** * Gets the intrinsic of the current parsing context or {@code null} if not * {@link #parsingIntrinsic() parsing an intrinsic}. */ IntrinsicContext getIntrinsic(); BailoutException bailout(String string); /** * Gets a version of a given value that has a {@linkplain StampTool#isPointerNonNull(ValueNode) * non-null} stamp. */ default ValueNode nullCheckedValue(ValueNode value) { if (!StampTool.isPointerNonNull(value.stamp())) { IsNullNode condition = getGraph().unique(new IsNullNode(value)); ObjectStamp receiverStamp = (ObjectStamp) value.stamp(); Stamp stamp = receiverStamp.join(objectNonNull()); FixedGuardNode fixedGuard = append(new FixedGuardNode(condition, NullCheckException, InvalidateReprofile, true)); PiNode nonNullReceiver = getGraph().unique(new PiNode(value, stamp)); nonNullReceiver.setGuard(fixedGuard); // TODO: Propogating the non-null into the frame state would // remove subsequent null-checks on the same value. However, // it currently causes an assertion failure when merging states. // // frameState.replace(value, nonNullReceiver); return nonNullReceiver; } return value; } }