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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
2 // All Rights Reserved. | 2 // All Rights Reserved. |
3 // | 3 // |
4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
5 // modification, are permitted provided that the following conditions are | 5 // modification, are permitted provided that the following conditions are |
6 // met: | 6 // met: |
7 // | 7 // |
8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
10 // | 10 // |
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995 PositionsRecorder* positions_recorder_; | 995 PositionsRecorder* positions_recorder_; |
996 const PositionState saved_state_; | 996 const PositionState saved_state_; |
997 | 997 |
998 DISALLOW_COPY_AND_ASSIGN(PreservePositionScope); | 998 DISALLOW_COPY_AND_ASSIGN(PreservePositionScope); |
999 }; | 999 }; |
1000 | 1000 |
1001 | 1001 |
1002 // ----------------------------------------------------------------------------- | 1002 // ----------------------------------------------------------------------------- |
1003 // Utility functions | 1003 // Utility functions |
1004 | 1004 |
1005 inline bool is_intn(int x, int n) { | |
1006 return -(1 << (n-1)) <= x && x < (1 << (n-1)); | |
1007 } | |
1008 | |
1009 inline bool is_int8(int x) { return is_intn(x, 8); } | |
1010 inline bool is_int16(int x) { return is_intn(x, 16); } | |
1011 inline bool is_int18(int x) { return is_intn(x, 18); } | |
1012 inline bool is_int24(int x) { return is_intn(x, 24); } | |
1013 | |
1014 inline bool is_uintn(int x, int n) { | |
1015 return (x & -(1 << n)) == 0; | |
1016 } | |
1017 | |
1018 inline bool is_uint2(int x) { return is_uintn(x, 2); } | |
1019 inline bool is_uint3(int x) { return is_uintn(x, 3); } | |
1020 inline bool is_uint4(int x) { return is_uintn(x, 4); } | |
1021 inline bool is_uint5(int x) { return is_uintn(x, 5); } | |
1022 inline bool is_uint6(int x) { return is_uintn(x, 6); } | |
1023 inline bool is_uint8(int x) { return is_uintn(x, 8); } | |
1024 inline bool is_uint10(int x) { return is_uintn(x, 10); } | |
1025 inline bool is_uint12(int x) { return is_uintn(x, 12); } | |
1026 inline bool is_uint16(int x) { return is_uintn(x, 16); } | |
1027 inline bool is_uint24(int x) { return is_uintn(x, 24); } | |
1028 inline bool is_uint26(int x) { return is_uintn(x, 26); } | |
1029 inline bool is_uint28(int x) { return is_uintn(x, 28); } | |
1030 | |
1031 inline int NumberOfBitsSet(uint32_t x) { | 1005 inline int NumberOfBitsSet(uint32_t x) { |
1032 unsigned int num_bits_set; | 1006 unsigned int num_bits_set; |
1033 for (num_bits_set = 0; x; x >>= 1) { | 1007 for (num_bits_set = 0; x; x >>= 1) { |
1034 num_bits_set += x & 1; | 1008 num_bits_set += x & 1; |
1035 } | 1009 } |
1036 return num_bits_set; | 1010 return num_bits_set; |
1037 } | 1011 } |
1038 | 1012 |
1039 bool EvalComparison(Token::Value op, double op1, double op2); | 1013 bool EvalComparison(Token::Value op, double op1, double op2); |
1040 | 1014 |
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1061 public: | 1035 public: |
1062 NullCallWrapper() { } | 1036 NullCallWrapper() { } |
1063 virtual ~NullCallWrapper() { } | 1037 virtual ~NullCallWrapper() { } |
1064 virtual void BeforeCall(int call_size) const { } | 1038 virtual void BeforeCall(int call_size) const { } |
1065 virtual void AfterCall() const { } | 1039 virtual void AfterCall() const { } |
1066 }; | 1040 }; |
1067 | 1041 |
1068 } } // namespace v8::internal | 1042 } } // namespace v8::internal |
1069 | 1043 |
1070 #endif // V8_ASSEMBLER_H_ | 1044 #endif // V8_ASSEMBLER_H_ |
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