1 /*
2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24
25 package org.graalvm.compiler.replacements;
26
27 import static org.graalvm.compiler.nodes.graphbuilderconf.IntrinsicContext.CompilationContext.INLINE_AFTER_PARSING;
28
29 import jdk.internal.vm.compiler.collections.EconomicMap;
30 import org.graalvm.compiler.bytecode.BytecodeProvider;
31 import org.graalvm.compiler.debug.DebugContext;
32 import org.graalvm.compiler.graph.SourceLanguagePositionProvider;
33 import org.graalvm.compiler.java.GraphBuilderPhase;
34 import org.graalvm.compiler.nodes.EncodedGraph;
35 import org.graalvm.compiler.nodes.GraphEncoder;
36 import org.graalvm.compiler.nodes.StructuredGraph;
37 import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
38 import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration;
39 import org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin;
40 import org.graalvm.compiler.nodes.graphbuilderconf.IntrinsicContext;
41 import org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugins;
42 import org.graalvm.compiler.nodes.graphbuilderconf.LoopExplosionPlugin;
43 import org.graalvm.compiler.nodes.graphbuilderconf.NodePlugin;
44 import org.graalvm.compiler.nodes.graphbuilderconf.ParameterPlugin;
45 import org.graalvm.compiler.phases.OptimisticOptimizations;
46 import org.graalvm.compiler.phases.common.CanonicalizerPhase;
47 import org.graalvm.compiler.phases.common.ConvertDeoptimizeToGuardPhase;
48 import org.graalvm.compiler.phases.tiers.PhaseContext;
49 import org.graalvm.compiler.phases.util.Providers;
50
51 import jdk.vm.ci.code.Architecture;
52 import jdk.vm.ci.meta.ResolvedJavaMethod;
53
54 /**
55 * A graph decoder that provides all necessary encoded graphs on-the-fly (by parsing the methods and
56 * encoding the graphs).
57 */
58 public class CachingPEGraphDecoder extends PEGraphDecoder {
59
60 protected final Providers providers;
61 protected final GraphBuilderConfiguration graphBuilderConfig;
62 protected final OptimisticOptimizations optimisticOpts;
63 private final AllowAssumptions allowAssumptions;
64 private final EconomicMap<ResolvedJavaMethod, EncodedGraph> graphCache;
65
66 public CachingPEGraphDecoder(Architecture architecture, StructuredGraph graph, Providers providers, GraphBuilderConfiguration graphBuilderConfig, OptimisticOptimizations optimisticOpts,
67 AllowAssumptions allowAssumptions, LoopExplosionPlugin loopExplosionPlugin, InvocationPlugins invocationPlugins, InlineInvokePlugin[] inlineInvokePlugins,
68 ParameterPlugin parameterPlugin,
69 NodePlugin[] nodePlugins, ResolvedJavaMethod callInlinedMethod, SourceLanguagePositionProvider sourceLanguagePositionProvider) {
70 super(architecture, graph, providers.getMetaAccess(), providers.getConstantReflection(), providers.getConstantFieldProvider(), providers.getStampProvider(), loopExplosionPlugin,
71 invocationPlugins, inlineInvokePlugins, parameterPlugin, nodePlugins, callInlinedMethod, sourceLanguagePositionProvider);
72
73 this.providers = providers;
74 this.graphBuilderConfig = graphBuilderConfig;
75 this.optimisticOpts = optimisticOpts;
76 this.allowAssumptions = allowAssumptions;
77 this.graphCache = EconomicMap.create();
78 }
79
80 protected GraphBuilderPhase.Instance createGraphBuilderPhaseInstance(IntrinsicContext initialIntrinsicContext) {
81 return new GraphBuilderPhase.Instance(providers.getMetaAccess(), providers.getStampProvider(), providers.getConstantReflection(), providers.getConstantFieldProvider(), graphBuilderConfig,
82 optimisticOpts, initialIntrinsicContext);
83 }
84
85 @SuppressWarnings("try")
86 private EncodedGraph createGraph(ResolvedJavaMethod method, ResolvedJavaMethod originalMethod, BytecodeProvider intrinsicBytecodeProvider, boolean isSubstitution) {
87 // @formatter:off
88 StructuredGraph graphToEncode = new StructuredGraph.Builder(options, debug, allowAssumptions).
89 useProfilingInfo(false).
90 trackNodeSourcePosition(graphBuilderConfig.trackNodeSourcePosition()).
91 method(method).
92 setIsSubstitution(isSubstitution).
93 build();
94 // @formatter:on
95 try (DebugContext.Scope scope = debug.scope("createGraph", graphToEncode)) {
96 IntrinsicContext initialIntrinsicContext = intrinsicBytecodeProvider != null ? new IntrinsicContext(originalMethod, method, intrinsicBytecodeProvider, INLINE_AFTER_PARSING) : null;
97 GraphBuilderPhase.Instance graphBuilderPhaseInstance = createGraphBuilderPhaseInstance(initialIntrinsicContext);
98 graphBuilderPhaseInstance.apply(graphToEncode);
99
100 PhaseContext context = new PhaseContext(providers);
101 new CanonicalizerPhase().apply(graphToEncode, context);
102 /*
103 * ConvertDeoptimizeToGuardPhase reduces the number of merges in the graph, so that
104 * fewer frame states will be created. This significantly reduces the number of nodes in
105 * the initial graph.
106 */
107 new ConvertDeoptimizeToGuardPhase().apply(graphToEncode, context);
108
109 EncodedGraph encodedGraph = GraphEncoder.encodeSingleGraph(graphToEncode, architecture);
110 graphCache.put(method, encodedGraph);
111 return encodedGraph;
112
113 } catch (Throwable ex) {
114 throw debug.handle(ex);
115 }
116 }
117
118 @Override
119 protected EncodedGraph lookupEncodedGraph(ResolvedJavaMethod method, ResolvedJavaMethod originalMethod, BytecodeProvider intrinsicBytecodeProvider, boolean isSubstitution,
120 boolean trackNodeSourcePosition) {
121 EncodedGraph result = graphCache.get(method);
122 if (result == null && method.hasBytecodes()) {
123 result = createGraph(method, originalMethod, intrinsicBytecodeProvider, isSubstitution);
124 }
125 return result;
126 }
127 }