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/*
* Copyright (C) 2013 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.
*/
#pragma once
#include "InstructionStream.h"
#include <wtf/HashSet.h>
namespace JSC {
// Reference count indicates number of live registers that alias this object.
class StaticPropertyAnalysis : public RefCounted<StaticPropertyAnalysis> {
public:
static Ref<StaticPropertyAnalysis> create(JSInstructionStream::MutableRef&& instructionRef)
{
return adoptRef(*new StaticPropertyAnalysis(WTFMove(instructionRef)));
}
void addPropertyIndex(unsigned propertyIndex) { m_propertyIndexes.add(propertyIndex); }
void record();
int propertyIndexCount() { return m_propertyIndexes.size(); }
private:
StaticPropertyAnalysis(JSInstructionStream::MutableRef&& instructionRef)
: m_instructionRef(WTFMove(instructionRef))
{
}
JSInstructionStream::MutableRef m_instructionRef;
typedef UncheckedKeyHashSet<unsigned, WTF::IntHash<unsigned>, WTF::UnsignedWithZeroKeyHashTraits<unsigned>> PropertyIndexSet;
PropertyIndexSet m_propertyIndexes;
};
} // namespace JSC
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