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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_IC_STATE_H_ | 5 #ifndef V8_IC_STATE_H_ |
6 #define V8_IC_STATE_H_ | 6 #define V8_IC_STATE_H_ |
7 | 7 |
8 #include "src/macro-assembler.h" | 8 #include "src/macro-assembler.h" |
9 | 9 |
10 namespace v8 { | 10 namespace v8 { |
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49 const CallType call_type_; | 49 const CallType call_type_; |
50 }; | 50 }; |
51 | 51 |
52 | 52 |
53 std::ostream& operator<<(std::ostream& os, const CallICState& s); | 53 std::ostream& operator<<(std::ostream& os, const CallICState& s); |
54 | 54 |
55 | 55 |
56 class BinaryOpICState final BASE_EMBEDDED { | 56 class BinaryOpICState final BASE_EMBEDDED { |
57 public: | 57 public: |
58 BinaryOpICState(Isolate* isolate, ExtraICState extra_ic_state); | 58 BinaryOpICState(Isolate* isolate, ExtraICState extra_ic_state); |
59 BinaryOpICState(Isolate* isolate, Token::Value op, LanguageMode language_mode) | 59 BinaryOpICState(Isolate* isolate, Token::Value op, Strength strength) |
60 : op_(op), | 60 : op_(op), |
61 strong_(is_strong(language_mode)), | 61 strong_(is_strong(strength)), |
62 left_kind_(NONE), | 62 left_kind_(NONE), |
63 right_kind_(NONE), | 63 right_kind_(NONE), |
64 result_kind_(NONE), | 64 result_kind_(NONE), |
65 fixed_right_arg_(Nothing<int>()), | 65 fixed_right_arg_(Nothing<int>()), |
66 isolate_(isolate) { | 66 isolate_(isolate) { |
67 DCHECK_LE(FIRST_TOKEN, op); | 67 DCHECK_LE(FIRST_TOKEN, op); |
68 DCHECK_LE(op, LAST_TOKEN); | 68 DCHECK_LE(op, LAST_TOKEN); |
69 } | 69 } |
70 | 70 |
71 InlineCacheState GetICState() const { | 71 InlineCacheState GetICState() const { |
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98 | 98 |
99 // Returns true if the IC _should_ create allocation mementos. | 99 // Returns true if the IC _should_ create allocation mementos. |
100 bool ShouldCreateAllocationMementos() const { | 100 bool ShouldCreateAllocationMementos() const { |
101 return FLAG_allocation_site_pretenuring && CouldCreateAllocationMementos(); | 101 return FLAG_allocation_site_pretenuring && CouldCreateAllocationMementos(); |
102 } | 102 } |
103 | 103 |
104 bool HasSideEffects() const { | 104 bool HasSideEffects() const { |
105 return Max(left_kind_, right_kind_) == GENERIC; | 105 return Max(left_kind_, right_kind_) == GENERIC; |
106 } | 106 } |
107 | 107 |
108 LanguageMode language_mode() const { | 108 Strength strength() const { |
109 return strong_ ? LanguageMode::STRONG : LanguageMode::SLOPPY; | 109 return strong_ ? Strength::STRONG : Strength::WEAK; |
110 } | 110 } |
111 | 111 |
112 // Returns true if the IC should enable the inline smi code (i.e. if either | 112 // Returns true if the IC should enable the inline smi code (i.e. if either |
113 // parameter may be a smi). | 113 // parameter may be a smi). |
114 bool UseInlinedSmiCode() const { | 114 bool UseInlinedSmiCode() const { |
115 return KindMaybeSmi(left_kind_) || KindMaybeSmi(right_kind_); | 115 return KindMaybeSmi(left_kind_) || KindMaybeSmi(right_kind_); |
116 } | 116 } |
117 | 117 |
118 static const int FIRST_TOKEN = Token::BIT_OR; | 118 static const int FIRST_TOKEN = Token::BIT_OR; |
119 static const int LAST_TOKEN = Token::MOD; | 119 static const int LAST_TOKEN = Token::MOD; |
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140 static Type* KindToType(Kind kind, Zone* zone); | 140 static Type* KindToType(Kind kind, Zone* zone); |
141 static bool KindMaybeSmi(Kind kind) { | 141 static bool KindMaybeSmi(Kind kind) { |
142 return (kind >= SMI && kind <= NUMBER) || kind == GENERIC; | 142 return (kind >= SMI && kind <= NUMBER) || kind == GENERIC; |
143 } | 143 } |
144 | 144 |
145 // We truncate the last bit of the token. | 145 // We truncate the last bit of the token. |
146 STATIC_ASSERT(LAST_TOKEN - FIRST_TOKEN < (1 << 4)); | 146 STATIC_ASSERT(LAST_TOKEN - FIRST_TOKEN < (1 << 4)); |
147 class OpField : public BitField<int, 0, 4> {}; | 147 class OpField : public BitField<int, 0, 4> {}; |
148 class ResultKindField : public BitField<Kind, 4, 3> {}; | 148 class ResultKindField : public BitField<Kind, 4, 3> {}; |
149 class LeftKindField : public BitField<Kind, 7, 3> {}; | 149 class LeftKindField : public BitField<Kind, 7, 3> {}; |
150 class StrongField : public BitField<bool, 10, 1> {}; | 150 class StrengthField : public BitField<bool, 10, 1> {}; |
151 // When fixed right arg is set, we don't need to store the right kind. | 151 // When fixed right arg is set, we don't need to store the right kind. |
152 // Thus the two fields can overlap. | 152 // Thus the two fields can overlap. |
153 class HasFixedRightArgField : public BitField<bool, 11, 1> {}; | 153 class HasFixedRightArgField : public BitField<bool, 11, 1> {}; |
154 class FixedRightArgValueField : public BitField<int, 12, 4> {}; | 154 class FixedRightArgValueField : public BitField<int, 12, 4> {}; |
155 class RightKindField : public BitField<Kind, 12, 3> {}; | 155 class RightKindField : public BitField<Kind, 12, 3> {}; |
156 | 156 |
157 Token::Value op_; | 157 Token::Value op_; |
158 bool strong_; | 158 bool strong_; |
159 Kind left_kind_; | 159 Kind left_kind_; |
160 Kind right_kind_; | 160 Kind right_kind_; |
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250 static const ExtraICState kStrictModeState = STRICT | 250 static const ExtraICState kStrictModeState = STRICT |
251 << LanguageModeState::kShift; | 251 << LanguageModeState::kShift; |
252 | 252 |
253 private: | 253 private: |
254 const ExtraICState state_; | 254 const ExtraICState state_; |
255 }; | 255 }; |
256 } | 256 } |
257 } | 257 } |
258 | 258 |
259 #endif // V8_IC_STATE_H_ | 259 #endif // V8_IC_STATE_H_ |
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