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* Copyright (C) 2011 Apple Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef DFGOSRExitCompiler_h
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#define DFGOSRExitCompiler_h
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#include <wtf/Platform.h>
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#include "DFGAssemblyHelpers.h"
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#include "DFGCCallHelpers.h"
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#include "DFGOSRExit.h"
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#include "DFGOperations.h"
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class OSRExitCompiler {
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OSRExitCompiler(CCallHelpers& jit)
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void compileExit(const OSRExit&, const Operands<ValueRecovery>&, SpeculationRecovery*);
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static unsigned badIndex() { return static_cast<unsigned>(-1); };
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void initializePoisoned(unsigned size)
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m_poisonScratchIndices.resize(size);
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m_poisonScratchIndices.fill(badIndex(), size);
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unsigned poisonIndex(unsigned index)
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unsigned result = m_poisonScratchIndices[index];
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ASSERT(result != badIndex());
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void handleExitCounts(const OSRExit&);
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Vector<unsigned> m_poisonScratchIndices;
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void DFG_OPERATION compileOSRExit(ExecState*) WTF_INTERNAL;
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} } // namespace JSC::DFG
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#endif // ENABLE(DFG_JIT)
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#endif // DFGOSRExitCompiler_h