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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef jit_BaselineInspector_h
#define jit_BaselineInspector_h
#include "jit/BaselineIC.h"
#include "jit/BaselineJIT.h"
#include "jit/MIR.h"
namespace js {
namespace jit {
class BaselineInspector;
class ICInspector
{
protected:
BaselineInspector* inspector_;
jsbytecode* pc_;
ICEntry* icEntry_;
ICInspector(BaselineInspector* inspector, jsbytecode* pc, ICEntry* icEntry)
: inspector_(inspector), pc_(pc), icEntry_(icEntry)
{ }
};
class SetElemICInspector : public ICInspector
{
public:
SetElemICInspector(BaselineInspector* inspector, jsbytecode* pc, ICEntry* icEntry)
: ICInspector(inspector, pc, icEntry)
{ }
bool sawOOBDenseWrite() const;
bool sawOOBTypedArrayWrite() const;
bool sawDenseWrite() const;
bool sawTypedArrayWrite() const;
};
class BaselineInspector
{
private:
JSScript* script;
BaselineICEntry* prevLookedUpEntry;
public:
explicit BaselineInspector(JSScript* script)
: script(script), prevLookedUpEntry(nullptr)
{
MOZ_ASSERT(script);
}
bool hasBaselineScript() const {
return script->hasBaselineScript();
}
BaselineScript* baselineScript() const {
return script->baselineScript();
}
private:
#ifdef DEBUG
bool isValidPC(jsbytecode* pc) {
return script->containsPC(pc);
}
#endif
BaselineICEntry& icEntryFromPC(jsbytecode* pc) {
MOZ_ASSERT(hasBaselineScript());
MOZ_ASSERT(isValidPC(pc));
BaselineICEntry& ent =
baselineScript()->icEntryFromPCOffset(script->pcToOffset(pc), prevLookedUpEntry);
MOZ_ASSERT(ent.isForOp());
prevLookedUpEntry = &ent;
return ent;
}
template <typename ICInspectorType>
ICInspectorType makeICInspector(jsbytecode* pc, ICStub::Kind expectedFallbackKind) {
BaselineICEntry* ent = nullptr;
if (hasBaselineScript()) {
ent = &icEntryFromPC(pc);
MOZ_ASSERT(ent->fallbackStub()->kind() == expectedFallbackKind);
}
return ICInspectorType(this, pc, ent);
}
ICStub* monomorphicStub(jsbytecode* pc);
MOZ_MUST_USE bool dimorphicStub(jsbytecode* pc, ICStub** pfirst, ICStub** psecond);
public:
typedef Vector<ReceiverGuard, 4, JitAllocPolicy> ReceiverVector;
typedef Vector<ObjectGroup*, 4, JitAllocPolicy> ObjectGroupVector;
MOZ_MUST_USE bool maybeInfoForPropertyOp(jsbytecode* pc, ReceiverVector& receivers,
ObjectGroupVector& convertUnboxedGroups);
SetElemICInspector setElemICInspector(jsbytecode* pc) {
return makeICInspector<SetElemICInspector>(pc, ICStub::SetElem_Fallback);
}
MIRType expectedResultType(jsbytecode* pc);
MCompare::CompareType expectedCompareType(jsbytecode* pc);
MIRType expectedBinaryArithSpecialization(jsbytecode* pc);
MIRType expectedPropertyAccessInputType(jsbytecode* pc);
bool hasSeenNonNativeGetElement(jsbytecode* pc);
bool hasSeenNegativeIndexGetElement(jsbytecode* pc);
bool hasSeenAccessedGetter(jsbytecode* pc);
bool hasSeenDoubleResult(jsbytecode* pc);
bool hasSeenNonStringIterMore(jsbytecode* pc);
MOZ_MUST_USE bool isOptimizableCallStringSplit(jsbytecode* pc, JSString** strOut,
JSString** sepOut, JSObject** objOut);
JSObject* getTemplateObject(jsbytecode* pc);
JSObject* getTemplateObjectForNative(jsbytecode* pc, Native native);
JSObject* getTemplateObjectForClassHook(jsbytecode* pc, const Class* clasp);
JSObject* getTemplateObjectForSimdCtor(jsbytecode* pc, SimdType simdType);
// Sometimes the group a template object will have is known, even if the
// object itself isn't.
ObjectGroup* getTemplateObjectGroup(jsbytecode* pc);
JSFunction* getSingleCallee(jsbytecode* pc);
LexicalEnvironmentObject* templateNamedLambdaObject();
CallObject* templateCallObject();
MOZ_MUST_USE bool commonGetPropFunction(jsbytecode* pc, JSObject** holder, Shape** holderShape,
JSFunction** commonGetter, Shape** globalShape,
bool* isOwnProperty, ReceiverVector& receivers,
ObjectGroupVector& convertUnboxedGroups);
MOZ_MUST_USE bool commonSetPropFunction(jsbytecode* pc, JSObject** holder, Shape** holderShape,
JSFunction** commonSetter, bool* isOwnProperty,
ReceiverVector& receivers,
ObjectGroupVector& convertUnboxedGroups);
MOZ_MUST_USE bool instanceOfData(jsbytecode* pc, Shape** shape, uint32_t* slot,
JSObject** prototypeObject);
};
} // namespace jit
} // namespace js
#endif /* jit_BaselineInspector_h */
|
