CodeBlock::m_instructionCount is wrong
[WebKit-https.git] / Source / JavaScriptCore / dfg / DFGDriver.cpp
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25
26 #include "config.h"
27 #include "DFGDriver.h"
28
29 #include "JSObject.h"
30 #include "JSString.h"
31
32 #include "CodeBlock.h"
33 #include "DFGJITCode.h"
34 #include "DFGPlan.h"
35 #include "DFGThunks.h"
36 #include "DFGWorklist.h"
37 #include "FunctionWhitelist.h"
38 #include "JITCode.h"
39 #include "JSCInlines.h"
40 #include "Options.h"
41 #include "ThunkGenerators.h"
42 #include "TypeProfilerLog.h"
43 #include <wtf/Atomics.h>
44 #include <wtf/NeverDestroyed.h>
45
46 #if ENABLE(FTL_JIT)
47 #include "FTLThunks.h"
48 #endif
49
50 namespace JSC { namespace DFG {
51
52 static unsigned numCompilations;
53
54 unsigned getNumCompilations()
55 {
56     return numCompilations;
57 }
58
59 #if ENABLE(DFG_JIT)
60 static FunctionWhitelist& ensureGlobalDFGWhitelist()
61 {
62     static LazyNeverDestroyed<FunctionWhitelist> dfgWhitelist;
63     static std::once_flag initializeWhitelistFlag;
64     std::call_once(initializeWhitelistFlag, [] {
65         const char* functionWhitelistFile = Options::dfgWhitelist();
66         dfgWhitelist.construct(functionWhitelistFile);
67     });
68     return dfgWhitelist;
69 }
70
71 static CompilationResult compileImpl(
72     VM& vm, CodeBlock* codeBlock, CodeBlock* profiledDFGCodeBlock, CompilationMode mode,
73     unsigned osrEntryBytecodeIndex, const Operands<Optional<JSValue>>& mustHandleValues,
74     Ref<DeferredCompilationCallback>&& callback)
75 {
76     if (!Options::bytecodeRangeToDFGCompile().isInRange(codeBlock->instructionsSize())
77         || !ensureGlobalDFGWhitelist().contains(codeBlock))
78         return CompilationFailed;
79     
80     numCompilations++;
81     
82     ASSERT(codeBlock);
83     ASSERT(codeBlock->alternative());
84     ASSERT(codeBlock->alternative()->jitType() == JITType::BaselineJIT);
85     ASSERT(!profiledDFGCodeBlock || profiledDFGCodeBlock->jitType() == JITType::DFGJIT);
86     
87     if (logCompilationChanges(mode))
88         dataLog("DFG(Driver) compiling ", *codeBlock, " with ", mode, ", instructions size = ", codeBlock->instructionsSize(), "\n");
89     
90     // Make sure that any stubs that the DFG is going to use are initialized. We want to
91     // make sure that all JIT code generation does finalization on the main thread.
92     vm.getCTIStub(arityFixupGenerator);
93     vm.getCTIStub(osrExitThunkGenerator);
94     vm.getCTIStub(osrExitGenerationThunkGenerator);
95     vm.getCTIStub(throwExceptionFromCallSlowPathGenerator);
96     vm.getCTIStub(linkCallThunkGenerator);
97     vm.getCTIStub(linkPolymorphicCallThunkGenerator);
98     
99     if (vm.typeProfiler())
100         vm.typeProfilerLog()->processLogEntries(vm, "Preparing for DFG compilation."_s);
101     
102     Ref<Plan> plan = adoptRef(
103         *new Plan(codeBlock, profiledDFGCodeBlock, mode, osrEntryBytecodeIndex, mustHandleValues));
104
105     plan->setCallback(WTFMove(callback));
106     if (Options::useConcurrentJIT()) {
107         Worklist& worklist = ensureGlobalWorklistFor(mode);
108         if (logCompilationChanges(mode))
109             dataLog("Deferring DFG compilation of ", *codeBlock, " with queue length ", worklist.queueLength(), ".\n");
110         worklist.enqueue(WTFMove(plan));
111         return CompilationDeferred;
112     }
113     
114     plan->compileInThread(nullptr);
115     return plan->finalizeWithoutNotifyingCallback();
116 }
117 #else // ENABLE(DFG_JIT)
118 static CompilationResult compileImpl(
119     VM&, CodeBlock*, CodeBlock*, CompilationMode, unsigned, const Operands<Optional<JSValue>>&,
120     Ref<DeferredCompilationCallback>&&)
121 {
122     return CompilationFailed;
123 }
124 #endif // ENABLE(DFG_JIT)
125
126 CompilationResult compile(
127     VM& vm, CodeBlock* codeBlock, CodeBlock* profiledDFGCodeBlock, CompilationMode mode,
128     unsigned osrEntryBytecodeIndex, const Operands<Optional<JSValue>>& mustHandleValues,
129     Ref<DeferredCompilationCallback>&& callback)
130 {
131     CompilationResult result = compileImpl(
132         vm, codeBlock, profiledDFGCodeBlock, mode, osrEntryBytecodeIndex, mustHandleValues,
133         callback.copyRef());
134     if (result != CompilationDeferred)
135         callback->compilationDidComplete(codeBlock, profiledDFGCodeBlock, result);
136     return result;
137 }
138
139 } } // namespace JSC::DFG