Source/JavaScriptCore/dfg/DFGJITFinalizer.cpp

/*
 * Copyright (C) 2013, 2015-2016 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
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 *    notice, this list of conditions and the following disclaimer in the
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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#include "config.h"
#include "DFGJITFinalizer.h"

#if ENABLE(DFG_JIT)

#include "CodeBlock.h"
#include "CodeBlockWithJITType.h"
#include "DFGCommon.h"
#include "DFGPlan.h"
#include "JSCInlines.h"
#include "ProfilerDatabase.h"

namespace JSC { namespace DFG {

JITFinalizer::JITFinalizer(Plan& plan, PassRefPtr<JITCode> jitCode, std::unique_ptr<LinkBuffer> linkBuffer, MacroAssemblerCodePtr withArityCheck)
    : Finalizer(plan)
    , m_jitCode(jitCode)
    , m_linkBuffer(WTFMove(linkBuffer))
    , m_withArityCheck(withArityCheck)
{
}

JITFinalizer::~JITFinalizer()
{
}

size_t JITFinalizer::codeSize()
{
    return m_linkBuffer->size();
}

bool JITFinalizer::finalize()
{
    m_jitCode->initializeCodeRef(
        FINALIZE_DFG_CODE(*m_linkBuffer, ("DFG JIT code for %s", toCString(CodeBlockWithJITType(m_plan.codeBlock, JITCode::DFGJIT)).data())),
        MacroAssemblerCodePtr());
    
    m_plan.codeBlock->setJITCode(m_jitCode);
    
    finalizeCommon();
    
    return true;
}

bool JITFinalizer::finalizeFunction()
{
    RELEASE_ASSERT(!m_withArityCheck.isEmptyValue());
    m_jitCode->initializeCodeRef(
        FINALIZE_DFG_CODE(*m_linkBuffer, ("DFG JIT code for %s", toCString(CodeBlockWithJITType(m_plan.codeBlock, JITCode::DFGJIT)).data())),
        m_withArityCheck);
    m_plan.codeBlock->setJITCode(m_jitCode);
    
    finalizeCommon();
    
    return true;
}

void JITFinalizer::finalizeCommon()
{
    // Some JIT finalizers may have added more constants. Shrink-to-fit those things now.
    m_plan.codeBlock->constants().shrinkToFit();
    m_plan.codeBlock->constantsSourceCodeRepresentation().shrinkToFit();
    
#if ENABLE(FTL_JIT)
    m_jitCode->optimizeAfterWarmUp(m_plan.codeBlock);
#endif // ENABLE(FTL_JIT)
    
    if (m_plan.compilation)
        m_plan.vm->m_perBytecodeProfiler->addCompilation(m_plan.codeBlock, m_plan.compilation);
    
    if (!m_plan.willTryToTierUp)
        m_plan.codeBlock->baselineVersion()->m_didFailFTLCompilation = true;
}

} } // namespace JSC::DFG

#endif // ENABLE(DFG_JIT)