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
|
/*
* 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.
*/
#pragma once
#if ENABLE(B3_JIT)
#include "B3CaseCollection.h"
#include "B3SwitchCase.h"
#include "B3Value.h"
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC { namespace B3 {
class SwitchValue final : public Value {
public:
static bool accepts(Kind kind) { return kind == Switch; }
~SwitchValue() final;
// numCaseValues() + 1 == numSuccessors().
unsigned numCaseValues() const { return m_values.size(); }
// The successor for this case value is at the same index.
int64_t caseValue(unsigned index) const { return m_values[index]; }
const Vector<int64_t>& caseValues() const { return m_values; }
CaseCollection cases(const BasicBlock* owner) const { return CaseCollection(this, owner); }
CaseCollection cases() const { return cases(owner); }
bool hasFallThrough(const BasicBlock*) const;
bool hasFallThrough() const;
BasicBlock* fallThrough(const BasicBlock* owner);
// These two functions can be called in any order.
void setFallThrough(BasicBlock*, const FrequentedBlock&);
void appendCase(BasicBlock*, const SwitchCase&);
JS_EXPORT_PRIVATE void setFallThrough(const FrequentedBlock&);
JS_EXPORT_PRIVATE void appendCase(const SwitchCase&);
void dumpSuccessors(const BasicBlock*, PrintStream&) const final;
B3_SPECIALIZE_VALUE_FOR_FIXED_CHILDREN(1)
B3_SPECIALIZE_VALUE_FOR_FINAL_SIZE_FIXED_CHILDREN
private:
void dumpMeta(CommaPrinter&, PrintStream&) const final;
friend class Procedure;
friend class Value;
static Opcode opcodeFromConstructor(Origin, Value*) { return Switch; }
JS_EXPORT_PRIVATE SwitchValue(Origin, Value* child);
Vector<int64_t> m_values;
};
} } // namespace JSC::B3
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
#endif // ENABLE(B3_JIT)
|
