OSR entry: delay outer-loop compilation when at inner-loop
[WebKit-https.git] / Source / JavaScriptCore / dfg / DFGToFTLForOSREntryDeferredCompilationCallback.cpp
1 /*
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24  */
25
26 #include "config.h"
27 #include "DFGToFTLForOSREntryDeferredCompilationCallback.h"
28
29 #if ENABLE(FTL_JIT)
30
31 #include "CodeBlock.h"
32 #include "DFGJITCode.h"
33 #include "FTLForOSREntryJITCode.h"
34 #include "JSCInlines.h"
35
36 namespace JSC { namespace DFG {
37
38 ToFTLForOSREntryDeferredCompilationCallback::ToFTLForOSREntryDeferredCompilationCallback(TierUpEntryTrigger* forcedOSREntryTrigger)
39     : m_forcedOSREntryTrigger(forcedOSREntryTrigger)
40 {
41 }
42
43 ToFTLForOSREntryDeferredCompilationCallback::~ToFTLForOSREntryDeferredCompilationCallback()
44 {
45 }
46
47 Ref<ToFTLForOSREntryDeferredCompilationCallback>ToFTLForOSREntryDeferredCompilationCallback::create(TierUpEntryTrigger* forcedOSREntryTrigger)
48 {
49     return adoptRef(*new ToFTLForOSREntryDeferredCompilationCallback(forcedOSREntryTrigger));
50 }
51
52 void ToFTLForOSREntryDeferredCompilationCallback::compilationDidBecomeReadyAsynchronously(
53     CodeBlock* codeBlock, CodeBlock* profiledDFGCodeBlock)
54 {
55     if (Options::verboseOSR()) {
56         dataLog(
57             "Optimizing compilation of ", *codeBlock, " (for ", *profiledDFGCodeBlock,
58             ") did become ready.\n");
59     }
60
61     *m_forcedOSREntryTrigger = TierUpEntryTrigger::TakeSlowPath;
62 }
63
64 void ToFTLForOSREntryDeferredCompilationCallback::compilationDidComplete(
65     CodeBlock* codeBlock, CodeBlock* profiledDFGCodeBlock, CompilationResult result)
66 {
67     if (Options::verboseOSR()) {
68         dataLog(
69             "Optimizing compilation of ", *codeBlock, " (for ", *profiledDFGCodeBlock,
70             ") result: ", result, "\n");
71     }
72     
73     JITCode* jitCode = profiledDFGCodeBlock->jitCode()->dfg();
74         
75     switch (result) {
76     case CompilationSuccessful: {
77         jitCode->setOSREntryBlock(*codeBlock->vm(), profiledDFGCodeBlock, codeBlock);
78         unsigned osrEntryBytecode = codeBlock->jitCode()->ftlForOSREntry()->bytecodeIndex();
79         jitCode->tierUpEntryTriggers.set(osrEntryBytecode, TierUpEntryTrigger::TakeSlowPath);
80         break;
81     }
82     case CompilationFailed:
83         jitCode->osrEntryRetry = 0;
84         jitCode->abandonOSREntry = true;
85         profiledDFGCodeBlock->jitCode()->dfg()->setOptimizationThresholdBasedOnCompilationResult(
86             profiledDFGCodeBlock, result);
87         break;
88     case CompilationDeferred:
89         RELEASE_ASSERT_NOT_REACHED();
90     case CompilationInvalidated:
91         jitCode->osrEntryRetry = 0;
92         break;
93     }
94     
95     DeferredCompilationCallback::compilationDidComplete(codeBlock, profiledDFGCodeBlock, result);
96 }
97
98 } } // JSC::DFG
99
100 #endif // ENABLE(FTL_JIT)