darling-JavaScriptCore/dfg/DFGAbstractInterpreterClobberState.h
2020-08-29 15:28:47 -04:00

61 lines
2.0 KiB
C++

/*
* Copyright (C) 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.
*/
#pragma once
#include <algorithm>
#include <cstdint>
#if ENABLE(DFG_JIT)
namespace JSC { namespace DFG {
enum class AbstractInterpreterClobberState : uint8_t {
NotClobbered,
FoldedClobber,
ObservedTransitions,
ClobberedStructures
};
inline AbstractInterpreterClobberState mergeClobberStates(AbstractInterpreterClobberState a, AbstractInterpreterClobberState b)
{
uint8_t aInt = static_cast<uint8_t>(a);
uint8_t bInt = static_cast<uint8_t>(b);
return static_cast<AbstractInterpreterClobberState>(std::max(aInt, bInt));
}
} } // namespace JSC::DFG
namespace WTF {
class PrintStream;
void printInternal(PrintStream&, JSC::DFG::AbstractInterpreterClobberState);
} // namespace WTF
#endif // ENABLE(DFG_JIT)