1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
* Copyright (C) 2015-2016 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.
*/
#ifndef B3BasicBlock_h
#define B3BasicBlock_h
#if ENABLE(B3_JIT)
#include "B3FrequentedBlock.h"
#include "B3Origin.h"
#include "B3SuccessorCollection.h"
#include "B3Type.h"
#include <wtf/Vector.h>
namespace JSC { namespace B3 {
class BlockInsertionSet;
class InsertionSet;
class Procedure;
class Value;
class BasicBlock {
WTF_MAKE_NONCOPYABLE(BasicBlock);
WTF_MAKE_FAST_ALLOCATED;
public:
typedef Vector<Value*> ValueList;
typedef Vector<BasicBlock*, 2> PredecessorList;
typedef Vector<FrequentedBlock, 2> SuccessorList; // This matches ControlValue::SuccessorList
static const char* const dumpPrefix;
~BasicBlock();
unsigned index() const { return m_index; }
ValueList::iterator begin() { return m_values.begin(); }
ValueList::iterator end() { return m_values.end(); }
ValueList::const_iterator begin() const { return m_values.begin(); }
ValueList::const_iterator end() const { return m_values.end(); }
size_t size() const { return m_values.size(); }
Value* at(size_t index) const { return m_values[index]; }
Value*& at(size_t index) { return m_values[index]; }
Value* last() const { return m_values.last(); }
Value*& last() { return m_values.last(); }
const ValueList& values() const { return m_values; }
ValueList& values() { return m_values; }
JS_EXPORT_PRIVATE void append(Value*);
JS_EXPORT_PRIVATE void appendNonTerminal(Value*);
JS_EXPORT_PRIVATE void replaceLast(Procedure&, Value*);
template<typename ValueType, typename... Arguments>
ValueType* appendNew(Procedure&, Arguments...);
template<typename ValueType, typename... Arguments>
ValueType* appendNewNonTerminal(Procedure&, Arguments...);
JS_EXPORT_PRIVATE Value* appendIntConstant(Procedure&, Origin, Type, int64_t value);
Value* appendIntConstant(Procedure&, Value* likeValue, int64_t value);
void removeLast(Procedure&);
template<typename ValueType, typename... Arguments>
ValueType* replaceLastWithNew(Procedure&, Arguments...);
unsigned numSuccessors() const;
const FrequentedBlock& successor(unsigned index) const;
FrequentedBlock& successor(unsigned index);
const SuccessorList& successors() const;
SuccessorList& successors();
BasicBlock* successorBlock(unsigned index) const;
BasicBlock*& successorBlock(unsigned index);
SuccessorCollection<BasicBlock, SuccessorList> successorBlocks();
SuccessorCollection<const BasicBlock, const SuccessorList> successorBlocks() const;
bool replaceSuccessor(BasicBlock* from, BasicBlock* to);
unsigned numPredecessors() const { return m_predecessors.size(); }
BasicBlock* predecessor(unsigned index) const { return m_predecessors[index]; }
BasicBlock*& predecessor(unsigned index) { return m_predecessors[index]; }
const PredecessorList& predecessors() const { return m_predecessors; }
PredecessorList& predecessors() { return m_predecessors; }
bool containsPredecessor(BasicBlock* block) { return m_predecessors.contains(block); }
bool addPredecessor(BasicBlock*);
bool removePredecessor(BasicBlock*);
bool replacePredecessor(BasicBlock* from, BasicBlock* to);
// Update predecessors starting with the successors of this block.
void updatePredecessorsAfter();
double frequency() const { return m_frequency; }
void dump(PrintStream&) const;
void deepDump(const Procedure&, PrintStream&) const;
private:
friend class BlockInsertionSet;
friend class InsertionSet;
friend class Procedure;
// Instantiate via Procedure.
BasicBlock(unsigned index, double frequency);
unsigned m_index;
ValueList m_values;
PredecessorList m_predecessors;
double m_frequency;
};
class DeepBasicBlockDump {
public:
DeepBasicBlockDump(const Procedure& proc, const BasicBlock* block)
: m_proc(proc)
, m_block(block)
{
}
void dump(PrintStream& out) const
{
if (m_block)
m_block->deepDump(m_proc, out);
else
out.print("<null>");
}
private:
const Procedure& m_proc;
const BasicBlock* m_block;
};
inline DeepBasicBlockDump deepDump(const Procedure& proc, const BasicBlock* block)
{
return DeepBasicBlockDump(proc, block);
}
} } // namespace JSC::B3
#endif // ENABLE(B3_JIT)
#endif // B3BasicBlock_h
|
