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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_UTILS_H_ | 5 #ifndef V8_UTILS_H_ |
6 #define V8_UTILS_H_ | 6 #define V8_UTILS_H_ |
7 | 7 |
8 #include <limits.h> | 8 #include <limits.h> |
9 #include <stdlib.h> | 9 #include <stdlib.h> |
10 #include <string.h> | 10 #include <string.h> |
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1036 static TypeFeedbackId None() { return TypeFeedbackId(kNoneId); } | 1036 static TypeFeedbackId None() { return TypeFeedbackId(kNoneId); } |
1037 bool IsNone() const { return id_ == kNoneId; } | 1037 bool IsNone() const { return id_ == kNoneId; } |
1038 | 1038 |
1039 private: | 1039 private: |
1040 static const int kNoneId = -1; | 1040 static const int kNoneId = -1; |
1041 | 1041 |
1042 int id_; | 1042 int id_; |
1043 }; | 1043 }; |
1044 | 1044 |
1045 | 1045 |
1046 template <int dummy_parameter> | 1046 class FeedbackVectorSlot { |
1047 class VectorSlot { | |
1048 public: | 1047 public: |
1049 explicit VectorSlot(int id) : id_(id) {} | 1048 FeedbackVectorSlot() : id_(kInvalidSlot) {} |
| 1049 explicit FeedbackVectorSlot(int id) : id_(id) {} |
1050 | 1050 |
1051 int ToInt() const { return id_; } | 1051 int ToInt() const { return id_; } |
1052 | 1052 |
1053 static VectorSlot Invalid() { return VectorSlot(kInvalidSlot); } | 1053 static FeedbackVectorSlot Invalid() { return FeedbackVectorSlot(); } |
1054 bool IsInvalid() const { return id_ == kInvalidSlot; } | 1054 bool IsInvalid() const { return id_ == kInvalidSlot; } |
1055 | 1055 |
1056 VectorSlot next() const { | 1056 bool operator==(FeedbackVectorSlot that) const { |
1057 DCHECK_NE(kInvalidSlot, id_); | 1057 return this->id_ == that.id_; |
1058 return VectorSlot(id_ + 1); | |
1059 } | 1058 } |
| 1059 bool operator!=(FeedbackVectorSlot that) const { return !(*this == that); } |
1060 | 1060 |
1061 bool operator==(VectorSlot that) const { return this->id_ == that.id_; } | 1061 friend size_t hash_value(FeedbackVectorSlot slot) { return slot.ToInt(); } |
1062 bool operator!=(VectorSlot that) const { return !(*this == that); } | 1062 friend std::ostream& operator<<(std::ostream& os, FeedbackVectorSlot); |
1063 | 1063 |
1064 private: | 1064 private: |
1065 static const int kInvalidSlot = -1; | 1065 static const int kInvalidSlot = -1; |
1066 | 1066 |
1067 int id_; | 1067 int id_; |
1068 }; | 1068 }; |
1069 | 1069 |
1070 | 1070 |
1071 template <int dummy_parameter> | |
1072 size_t hash_value(VectorSlot<dummy_parameter> slot) { | |
1073 return slot.ToInt(); | |
1074 } | |
1075 | |
1076 | |
1077 typedef VectorSlot<0> FeedbackVectorSlot; | |
1078 typedef VectorSlot<1> FeedbackVectorICSlot; | |
1079 | |
1080 | |
1081 class BailoutId { | 1071 class BailoutId { |
1082 public: | 1072 public: |
1083 explicit BailoutId(int id) : id_(id) { } | 1073 explicit BailoutId(int id) : id_(id) { } |
1084 int ToInt() const { return id_; } | 1074 int ToInt() const { return id_; } |
1085 | 1075 |
1086 static BailoutId None() { return BailoutId(kNoneId); } | 1076 static BailoutId None() { return BailoutId(kNoneId); } |
1087 static BailoutId Prologue() { return BailoutId(kPrologueId); } | 1077 static BailoutId Prologue() { return BailoutId(kPrologueId); } |
1088 static BailoutId FunctionEntry() { return BailoutId(kFunctionEntryId); } | 1078 static BailoutId FunctionEntry() { return BailoutId(kFunctionEntryId); } |
1089 static BailoutId Declarations() { return BailoutId(kDeclarationsId); } | 1079 static BailoutId Declarations() { return BailoutId(kDeclarationsId); } |
1090 static BailoutId FirstUsable() { return BailoutId(kFirstUsableId); } | 1080 static BailoutId FirstUsable() { return BailoutId(kFirstUsableId); } |
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1739 uint32_t* ptr = reinterpret_cast<uint32_t*>(p); | 1729 uint32_t* ptr = reinterpret_cast<uint32_t*>(p); |
1740 *ptr = c.u[0]; | 1730 *ptr = c.u[0]; |
1741 *(ptr + 1) = c.u[1]; | 1731 *(ptr + 1) = c.u[1]; |
1742 #endif // V8_TARGET_ARCH_MIPS | 1732 #endif // V8_TARGET_ARCH_MIPS |
1743 } | 1733 } |
1744 | 1734 |
1745 } // namespace internal | 1735 } // namespace internal |
1746 } // namespace v8 | 1736 } // namespace v8 |
1747 | 1737 |
1748 #endif // V8_UTILS_H_ | 1738 #endif // V8_UTILS_H_ |
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