1/*
2 * Copyright (C) 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 FTLValueRange_h
27#define FTLValueRange_h
28
29#if ENABLE(FTL_JIT)
30
31#include "FTLAbbreviatedTypes.h"
32
33namespace JSC { namespace FTL {
34
35class ValueRange {
36public:
37    ValueRange()
38        : m_begin(0)
39        , m_end(0)
40        , m_rangeMetadata(0)
41    {
42    }
43
44    ValueRange(LValue begin, LValue end)
45        : m_begin(begin)
46        , m_end(end)
47        , m_rangeMetadata(0)
48    {
49    }
50
51    LValue begin() const { return m_begin; }
52    LValue end() const { return m_end; }
53
54    void decorateInstruction(LContext, LValue loadInstruction, unsigned rangeKind) const;
55
56private:
57    LValue m_begin;
58    LValue m_end;
59    mutable LValue m_rangeMetadata;
60};
61
62} } // namespace JSC::FTL
63
64#endif // ENABLE(FTL_JIT)
65
66#endif // FTLValueRange_h
67
68