Source/JavaScriptCore/dfg/DFGOSRExitBase.cpp

/*
 * Copyright (C) 2013-2018 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

#include "config.h"
#include "DFGOSRExitBase.h"

#if ENABLE(DFG_JIT)

#include "CodeBlock.h"
#include "DFGBasicBlock.h"
#include "DFGNode.h"
#include "InlineCallFrame.h"
#include "JSCInlines.h"

namespace JSC { namespace DFG {

void OSRExitBase::considerAddingAsFrequentExitSiteSlow(CodeBlock* profiledCodeBlock, ExitingJITType jitType)
{
    CodeBlock* sourceProfiledCodeBlock =
        baselineCodeBlockForOriginAndBaselineCodeBlock(
            m_codeOriginForExitProfile, profiledCodeBlock);
    if (sourceProfiledCodeBlock) {
        ExitingInlineKind inlineKind;
        if (m_codeOriginForExitProfile.inlineCallFrame())
            inlineKind = ExitFromInlined;
        else
            inlineKind = ExitFromNotInlined;
        
        FrequentExitSite site;
        if (m_wasHoisted)
            site = FrequentExitSite(HoistingFailed, jitType, inlineKind);
        else
            site = FrequentExitSite(m_codeOriginForExitProfile.bytecodeIndex(), m_kind, jitType, inlineKind);
        ExitProfile::add(sourceProfiledCodeBlock, site);
    }
}

} } // namespace JSC::DFG

#endif // ENABLE(DFG_JIT)