2 * Copyright (C) 2013-2015 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include "CompilationResult.h"
30 #include "DFGCompilationKey.h"
31 #include "DFGCompilationMode.h"
32 #include "DFGDesiredIdentifiers.h"
33 #include "DFGDesiredTransitions.h"
34 #include "DFGDesiredWatchpoints.h"
35 #include "DFGDesiredWeakReferences.h"
36 #include "DFGFinalizer.h"
37 #include "DeferredCompilationCallback.h"
39 #include "ProfilerCompilation.h"
40 #include <wtf/HashMap.h>
41 #include <wtf/ThreadSafeRefCounted.h>
42 #include <wtf/text/CString.h>
56 struct Plan : public ThreadSafeRefCounted<Plan> {
58 CodeBlock* codeBlockToCompile, CodeBlock* profiledDFGCodeBlock,
59 CompilationMode, unsigned osrEntryBytecodeIndex,
60 const Operands<JSValue>& mustHandleValues);
63 void compileInThread(LongLivedState&, ThreadData*);
65 CompilationResult finalizeWithoutNotifyingCallback();
66 void finalizeAndNotifyCallback();
68 void notifyCompiling();
69 void notifyCompiled();
74 void rememberCodeBlocks();
75 void checkLivenessAndVisitChildren(SlotVisitor&);
76 bool isKnownToBeLiveDuringGC();
79 bool canTierUpAndOSREnter() const { return !tierUpAndOSREnterBytecodes.isEmpty(); }
83 // These can be raw pointers because we visit them during every GC in checkLivenessAndVisitChildren.
85 CodeBlock* profiledDFGCodeBlock;
88 const unsigned osrEntryBytecodeIndex;
89 Operands<JSValue> mustHandleValues;
91 ThreadData* threadData;
93 RefPtr<Profiler::Compilation> compilation;
95 std::unique_ptr<Finalizer> finalizer;
97 RefPtr<InlineCallFrameSet> inlineCallFrames;
98 DesiredWatchpoints watchpoints;
99 DesiredIdentifiers identifiers;
100 DesiredWeakReferences weakReferences;
101 DesiredTransitions transitions;
103 bool willTryToTierUp { false };
105 HashMap<unsigned, Vector<unsigned>> tierUpInLoopHierarchy;
106 Vector<unsigned> tierUpAndOSREnterBytecodes;
108 enum Stage { Preparing, Compiling, Compiled, Ready, Cancelled };
111 RefPtr<DeferredCompilationCallback> callback;
114 bool computeCompileTimes() const;
115 bool reportCompileTimes() const;
117 enum CompilationPath { FailPath, DFGPath, FTLPath, CancelPath };
118 CompilationPath compileInThreadImpl(LongLivedState&);
121 void reallyAdd(CommonData*);
123 double m_timeBeforeFTL;
126 #endif // ENABLE(DFG_JIT)
128 } } // namespace JSC::DFG