1/*
2 * Copyright (C) 2018 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include <algorithm>
29#include <cstdint>
30
31#if ENABLE(DFG_JIT)
32
33namespace JSC { namespace DFG {
34
35enum class AbstractInterpreterClobberState : uint8_t {
36 NotClobbered,
37 FoldedClobber,
38 ObservedTransitions,
39 ClobberedStructures
40};
41
42inline AbstractInterpreterClobberState mergeClobberStates(AbstractInterpreterClobberState a, AbstractInterpreterClobberState b)
43{
44 uint8_t aInt = static_cast<uint8_t>(a);
45 uint8_t bInt = static_cast<uint8_t>(b);
46 return static_cast<AbstractInterpreterClobberState>(std::max(aInt, bInt));
47}
48
49} } // namespace JSC::DFG
50
51namespace WTF {
52
53class PrintStream;
54
55void printInternal(PrintStream&, JSC::DFG::AbstractInterpreterClobberState);
56
57} // namespace WTF
58
59#endif // ENABLE(DFG_JIT)
60
61