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Issue 258933008: ARM64: Rename TryConvertDoubleToInt64 function (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 7 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved. 1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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938 // Saturate a signed 32-bit integer in input to an unsigned 8-bit integer in 938 // Saturate a signed 32-bit integer in input to an unsigned 8-bit integer in
939 // output. 939 // output.
940 void ClampInt32ToUint8(Register in_out); 940 void ClampInt32ToUint8(Register in_out);
941 void ClampInt32ToUint8(Register output, Register input); 941 void ClampInt32ToUint8(Register output, Register input);
942 942
943 // Saturate a double in input to an unsigned 8-bit integer in output. 943 // Saturate a double in input to an unsigned 8-bit integer in output.
944 void ClampDoubleToUint8(Register output, 944 void ClampDoubleToUint8(Register output,
945 DoubleRegister input, 945 DoubleRegister input,
946 DoubleRegister dbl_scratch); 946 DoubleRegister dbl_scratch);
947 947
948 // Try to convert a double to a signed 32-bit int. 948 // Try to represent a double as a signed 32-bit int.
949 // This succeeds if the result compares equal to the input, so inputs of -0.0 949 // This succeeds if the result compares equal to the input, so inputs of -0.0
950 // are converted to 0 and handled as a success. 950 // are represented as 0 and handled as a success.
951 // 951 //
952 // On output the Z flag is set if the conversion was successful. 952 // On output the Z flag is set if the operation was successful.
953 void TryConvertDoubleToInt32(Register as_int, 953 void TryRepresentDoubleAsInt32(Register as_int,
954 FPRegister value, 954 FPRegister value,
955 FPRegister scratch_d, 955 FPRegister scratch_d,
956 Label* on_successful_conversion = NULL, 956 Label* on_successful_conversion = NULL,
957 Label* on_failed_conversion = NULL) { 957 Label* on_failed_conversion = NULL) {
958 ASSERT(as_int.Is32Bits()); 958 ASSERT(as_int.Is32Bits());
959 TryConvertDoubleToInt(as_int, value, scratch_d, on_successful_conversion, 959 TryRepresentDoubleAsInt(as_int, value, scratch_d, on_successful_conversion,
960 on_failed_conversion); 960 on_failed_conversion);
961 } 961 }
962 962
963 // Try to convert a double to a signed 64-bit int. 963 // Try to represent a double as a signed 64-bit int.
964 // This succeeds if the result compares equal to the input, so inputs of -0.0 964 // This succeeds if the result compares equal to the input, so inputs of -0.0
965 // are converted to 0 and handled as a success. 965 // are represented as 0 and handled as a success.
966 // 966 //
967 // On output the Z flag is set if the conversion was successful. 967 // On output the Z flag is set if the operation was successful.
968 void TryConvertDoubleToInt64(Register as_int, 968 void TryRepresentDoubleAsInt64(Register as_int,
969 FPRegister value, 969 FPRegister value,
970 FPRegister scratch_d, 970 FPRegister scratch_d,
971 Label* on_successful_conversion = NULL, 971 Label* on_successful_conversion = NULL,
972 Label* on_failed_conversion = NULL) { 972 Label* on_failed_conversion = NULL) {
973 ASSERT(as_int.Is64Bits()); 973 ASSERT(as_int.Is64Bits());
974 TryConvertDoubleToInt(as_int, value, scratch_d, on_successful_conversion, 974 TryRepresentDoubleAsInt(as_int, value, scratch_d, on_successful_conversion,
975 on_failed_conversion); 975 on_failed_conversion);
976 } 976 }
977 977
978 // ---- Object Utilities ---- 978 // ---- Object Utilities ----
979 979
980 // Copy fields from 'src' to 'dst', where both are tagged objects. 980 // Copy fields from 'src' to 'dst', where both are tagged objects.
981 // The 'temps' list is a list of X registers which can be used for scratch 981 // The 'temps' list is a list of X registers which can be used for scratch
982 // values. The temps list must include at least one register. 982 // values. The temps list must include at least one register.
983 // 983 //
984 // Currently, CopyFields cannot make use of more than three registers from 984 // Currently, CopyFields cannot make use of more than three registers from
985 // the 'temps' list. 985 // the 'temps' list.
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2066 Register object, 2066 Register object,
2067 Register state, 2067 Register state,
2068 Register scratch1, 2068 Register scratch1,
2069 Register scratch2); 2069 Register scratch2);
2070 2070
2071 // Helper for implementing JumpIfNotInNewSpace and JumpIfInNewSpace. 2071 // Helper for implementing JumpIfNotInNewSpace and JumpIfInNewSpace.
2072 void InNewSpace(Register object, 2072 void InNewSpace(Register object,
2073 Condition cond, // eq for new space, ne otherwise. 2073 Condition cond, // eq for new space, ne otherwise.
2074 Label* branch); 2074 Label* branch);
2075 2075
2076 // Try to convert a double to an int so that integer fast-paths may be 2076 // Try to represent a double as an int so that integer fast-paths may be
2077 // used. Not every valid integer value is guaranteed to be caught. 2077 // used. Not every valid integer value is guaranteed to be caught.
2078 // It supports both 32-bit and 64-bit integers depending whether 'as_int' 2078 // It supports both 32-bit and 64-bit integers depending whether 'as_int'
2079 // is a W or X register. 2079 // is a W or X register.
2080 // 2080 //
2081 // This does not distinguish between +0 and -0, so if this distinction is 2081 // This does not distinguish between +0 and -0, so if this distinction is
2082 // important it must be checked separately. 2082 // important it must be checked separately.
2083 // 2083 //
2084 // On output the Z flag is set if the conversion was successful. 2084 // On output the Z flag is set if the operation was successful.
2085 void TryConvertDoubleToInt(Register as_int, 2085 void TryRepresentDoubleAsInt(Register as_int,
2086 FPRegister value, 2086 FPRegister value,
2087 FPRegister scratch_d, 2087 FPRegister scratch_d,
2088 Label* on_successful_conversion = NULL, 2088 Label* on_successful_conversion = NULL,
2089 Label* on_failed_conversion = NULL); 2089 Label* on_failed_conversion = NULL);
2090 2090
2091 bool generating_stub_; 2091 bool generating_stub_;
2092 #if DEBUG 2092 #if DEBUG
2093 // Tell whether any of the macro instruction can be used. When false the 2093 // Tell whether any of the macro instruction can be used. When false the
2094 // MacroAssembler will assert if a method which can emit a variable number 2094 // MacroAssembler will assert if a method which can emit a variable number
2095 // of instructions is called. 2095 // of instructions is called.
2096 bool allow_macro_instructions_; 2096 bool allow_macro_instructions_;
2097 #endif 2097 #endif
2098 bool has_frame_; 2098 bool has_frame_;
2099 2099
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2307 #error "Unsupported option" 2307 #error "Unsupported option"
2308 #define CODE_COVERAGE_STRINGIFY(x) #x 2308 #define CODE_COVERAGE_STRINGIFY(x) #x
2309 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) 2309 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
2310 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) 2310 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
2311 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> 2311 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
2312 #else 2312 #else
2313 #define ACCESS_MASM(masm) masm-> 2313 #define ACCESS_MASM(masm) masm->
2314 #endif 2314 #endif
2315 2315
2316 #endif // V8_ARM64_MACRO_ASSEMBLER_ARM64_H_ 2316 #endif // V8_ARM64_MACRO_ASSEMBLER_ARM64_H_
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