1/*
2 * Copyright (C) 2017 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#if ENABLE(B3_JIT)
29
30#include "AirInsertionSet.h"
31#include <wtf/Insertion.h>
32#include <wtf/Vector.h>
33
34namespace JSC { namespace B3 { namespace Air {
35
36class BasicBlock;
37class Code;
38
39// Phased insertions allow you to ascribe phases to the things inserted at an instruction boundary.
40class PhaseInsertion : public Insertion {
41public:
42 PhaseInsertion() { }
43
44 template<typename T>
45 PhaseInsertion(size_t index, unsigned phase, T&& element)
46 : Insertion(index, std::forward<T>(element))
47 , m_phase(phase)
48 {
49 }
50
51 unsigned phase() const { return m_phase; }
52
53 bool operator<(const PhaseInsertion& other) const
54 {
55 if (index() != other.index())
56 return index() < other.index();
57 return m_phase < other.m_phase;
58 }
59
60private:
61 unsigned m_phase { 0 };
62};
63
64class PhaseInsertionSet {
65public:
66 PhaseInsertionSet()
67 {
68 }
69
70 template<typename T>
71 void appendInsertion(T&& insertion)
72 {
73 m_insertions.append(std::forward<T>(insertion));
74 }
75
76 template<typename Inst>
77 void insertInst(size_t index, unsigned phase, Inst&& inst)
78 {
79 appendInsertion(PhaseInsertion(index, phase, std::forward<Inst>(inst)));
80 }
81
82 template<typename... Arguments>
83 void insert(size_t index, unsigned phase, Arguments&&... arguments)
84 {
85 insertInst(index, phase, Inst(std::forward<Arguments>(arguments)...));
86 }
87
88 void execute(BasicBlock*);
89
90private:
91 Vector<PhaseInsertion, 8> m_insertions;
92};
93
94} } } // namespace JSC::B3::Air
95
96#endif // ENABLE(B3_JIT)
97
98