Mercurial > hg > truffle
view graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/NodeIntrinsificationPlugin.java @ 21925:64475dbf6aec
Move instantiation checks from methods substitutions to the lowering of DynamicNewInstanceNode and DynamicNewArrayNode, so that Unsafe.allocateInstance and Array.newInstance can be intrinsified to a single node.
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Wed, 10 Jun 2015 17:23:19 -0700 |
parents | 3d15183f3c93 |
children |
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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.replacements; import static com.oracle.graal.replacements.NodeIntrinsificationPhase.*; import static com.oracle.jvmci.meta.MetaUtil.*; import java.util.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.Node.NodeIntrinsic; import com.oracle.graal.graphbuilderconf.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodeinfo.StructuralInput.MarkerType; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.word.*; import com.oracle.jvmci.common.*; import com.oracle.jvmci.debug.*; import com.oracle.jvmci.meta.*; /** * An {@link NodePlugin} that handles methods annotated by {@link Fold} and {@link NodeIntrinsic}. */ public class NodeIntrinsificationPlugin implements NodePlugin { protected final NodeIntrinsificationPhase nodeIntrinsification; private final WordTypes wordTypes; private final ResolvedJavaType structuralInputType; private final boolean mustIntrinsify; public NodeIntrinsificationPlugin(MetaAccessProvider metaAccess, NodeIntrinsificationPhase nodeIntrinsification, WordTypes wordTypes, boolean mustIntrinsify) { this.nodeIntrinsification = nodeIntrinsification; this.wordTypes = wordTypes; this.mustIntrinsify = mustIntrinsify; this.structuralInputType = metaAccess.lookupJavaType(StructuralInput.class); } /** * Calls in replacements to methods matching one of these filters are elided. Only void methods * are considered for elision. The use of "snippets" in name of the variable and system property * is purely for legacy reasons. */ private static final MethodFilter[] MethodsElidedInSnippets = getMethodsElidedInSnippets(); private static MethodFilter[] getMethodsElidedInSnippets() { String commaSeparatedPatterns = System.getProperty("graal.MethodsElidedInSnippets"); if (commaSeparatedPatterns != null) { return MethodFilter.parse(commaSeparatedPatterns); } return null; } @Override public boolean handleInvoke(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args) { NodeIntrinsic intrinsic = nodeIntrinsification.getIntrinsic(method); if (intrinsic != null) { Signature sig = method.getSignature(); Kind returnKind = sig.getReturnKind(); Stamp stamp = StampFactory.forKind(returnKind); if (returnKind == Kind.Object) { JavaType returnType = sig.getReturnType(method.getDeclaringClass()); if (returnType instanceof ResolvedJavaType) { ResolvedJavaType resolvedReturnType = (ResolvedJavaType) returnType; if (wordTypes.isWord(resolvedReturnType)) { stamp = wordTypes.getWordStamp(resolvedReturnType); } else { stamp = StampFactory.declared(resolvedReturnType); } } } boolean result = processNodeIntrinsic(b, method, intrinsic, Arrays.asList(args), returnKind, stamp); if (!result && mustIntrinsify) { reportIntrinsificationFailure(b, method, args); } return result; } else if (nodeIntrinsification.isFoldable(method)) { ResolvedJavaType[] parameterTypes = resolveJavaTypes(method.toParameterTypes(), method.getDeclaringClass()); JavaConstant constant = nodeIntrinsification.tryFold(Arrays.asList(args), parameterTypes, method); if (!COULD_NOT_FOLD.equals(constant)) { if (constant != null) { // Replace the invoke with the result of the call b.push(method.getSignature().getReturnKind(), ConstantNode.forConstant(constant, b.getMetaAccess(), b.getGraph())); } else { // This must be a void invoke assert method.getSignature().getReturnKind() == Kind.Void; } return true; } else if (mustIntrinsify) { reportIntrinsificationFailure(b, method, args); } } else if (MethodsElidedInSnippets != null) { if (MethodFilter.matches(MethodsElidedInSnippets, method)) { if (method.getSignature().getReturnKind() != Kind.Void) { throw new JVMCIError("Cannot elide non-void method " + method.format("%H.%n(%p)")); } return true; } } return false; } private static boolean reportIntrinsificationFailure(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args) { StringBuilder msg = new StringBuilder(); msg.append("Call in ").append(b.getMethod().format("%H.%n(%p)")); msg.append(" to ").append(method.format("%H.%n(%p)")); msg.append(" cannot be intrisfied or folded, probably because an argument is not a constant. Arguments: "); String sep = ""; for (ValueNode node : args) { msg.append(sep).append(node.toString()); sep = ", "; } throw new JVMCIError(msg.toString()); } private InputType getInputType(ResolvedJavaType type) { if (type != null && structuralInputType.isAssignableFrom(type)) { MarkerType markerType = type.getAnnotation(MarkerType.class); if (markerType != null) { return markerType.value(); } else { throw JVMCIError.shouldNotReachHere(String.format("%s extends StructuralInput, but is not annotated with @MarkerType", type)); } } else { return InputType.Value; } } private boolean processNodeIntrinsic(GraphBuilderContext b, ResolvedJavaMethod method, NodeIntrinsic intrinsic, List<ValueNode> args, Kind returnKind, Stamp stamp) { ValueNode res = createNodeIntrinsic(b, method, intrinsic, args, stamp); if (res == null) { return false; } if (res instanceof UnsafeCopyNode) { UnsafeCopyNode copy = (UnsafeCopyNode) res; UnsafeLoadNode value = b.add(new UnsafeLoadNode(copy.sourceObject(), copy.sourceOffset(), copy.accessKind(), copy.getLocationIdentity())); b.add(new UnsafeStoreNode(copy.destinationObject(), copy.destinationOffset(), value, copy.accessKind(), copy.getLocationIdentity())); return true; } else if (res instanceof ForeignCallNode) { /* * Need to update the BCI of a ForeignCallNode so that it gets the stateDuring in the * case that the foreign call can deoptimize. As with all deoptimization, we need a * state in a non-intrinsic method. */ GraphBuilderContext nonIntrinsicAncestor = b.getNonIntrinsicAncestor(); if (nonIntrinsicAncestor != null) { ForeignCallNode foreign = (ForeignCallNode) res; foreign.setBci(nonIntrinsicAncestor.bci()); } } boolean nonValueType = false; if (returnKind == Kind.Object && stamp instanceof ObjectStamp) { ResolvedJavaType type = ((ObjectStamp) stamp).type(); if (type != null && structuralInputType.isAssignableFrom(type)) { assert res.isAllowedUsageType(getInputType(type)); nonValueType = true; } } if (returnKind != Kind.Void) { assert nonValueType || res.getKind().getStackKind() != Kind.Void; res = b.addPush(returnKind, res); } else { assert res.getKind().getStackKind() == Kind.Void; res = b.add(res); } return true; } private ValueNode createNodeIntrinsic(GraphBuilderContext b, ResolvedJavaMethod method, NodeIntrinsic intrinsic, List<ValueNode> args, Stamp stamp) { ValueNode res = nodeIntrinsification.createIntrinsicNode(args, stamp, method, b.getGraph(), intrinsic); assert res != null || b.getGraph().method().getAnnotation(Snippet.class) != null : String.format( "Could not create node intrinsic for call to %s as one of the arguments expected to be constant isn't: arguments=%s", method.format("%H.%n(%p)"), args); return res; } }