1/*
2 * Copyright (C) 2013, 2014 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#ifndef FTLRegisterAtOffset_h
27#define FTLRegisterAtOffset_h
28
29#if ENABLE(FTL_JIT)
30
31#include "Reg.h"
32#include <wtf/PrintStream.h>
33
34namespace JSC { namespace FTL {
35
36class RegisterAtOffset {
37public:
38    RegisterAtOffset()
39        : m_offset(0)
40    {
41    }
42
43    RegisterAtOffset(Reg reg, ptrdiff_t offset)
44        : m_reg(reg)
45        , m_offset(offset)
46    {
47    }
48
49    bool operator!() const { return !m_reg; }
50
51    Reg reg() const { return m_reg; }
52    ptrdiff_t offset() const { return m_offset; }
53
54    bool operator==(const RegisterAtOffset& other) const
55    {
56        return reg() == other.reg() && offset() == other.offset();
57    }
58
59    bool operator<(const RegisterAtOffset& other) const
60    {
61        if (reg() != other.reg())
62            return reg() < other.reg();
63        return offset() < other.offset();
64    }
65
66    static Reg getReg(RegisterAtOffset* value) { return value->reg(); }
67
68    void dump(PrintStream& out) const;
69
70private:
71    Reg m_reg;
72    ptrdiff_t m_offset;
73};
74
75} } // namespace JSC::FTL
76
77#endif // ENABLE(FTL_JIT)
78
79#endif // FTLRegisterAtOffset_h
80
81