[builtins] Introduce proper Float64Tan operator.

src/compiler/opcodes.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_OPCODES_H_
 #define V8_COMPILER_OPCODES_H_
 
 #include <iosfwd>
 
 // Opcodes for control operators.
@@ skipping 200 matching lines @@
   V(NumberExp)                        \
   V(NumberExpm1)                      \
   V(NumberLog)                        \
   V(NumberLog1p)                      \
   V(NumberLog2)                       \
   V(NumberLog10)                      \
   V(NumberCbrt)                       \
   V(NumberRound)                      \
   V(NumberSin)                        \
   V(NumberSqrt)                       \
+  V(NumberTan)                        \
   V(NumberTrunc)                      \
   V(NumberToInt32)                    \
   V(NumberToUint32)                   \
   V(NumberSilenceNaN)                 \
   V(StringFromCharCode)               \
   V(StringToNumber)                   \
   V(ChangeTaggedSignedToInt32)        \
   V(ChangeTaggedToInt32)              \
   V(ChangeTaggedToUint32)             \
   V(ChangeTaggedToFloat64)            \
@@ skipping 153 matching lines @@
   V(Float64Cbrt)                \
   V(Float64Cos)                 \
   V(Float64Exp)                 \
   V(Float64Expm1)               \
   V(Float64Log)                 \
   V(Float64Log1p)               \
   V(Float64Log10)               \
   V(Float64Log2)                \
   V(Float64Sin)                 \
   V(Float64Sqrt)                \
+  V(Float64Tan)                 \
   V(Float64RoundDown)           \
   V(Float32RoundUp)             \
   V(Float64RoundUp)             \
   V(Float32RoundTruncate)       \
   V(Float64RoundTruncate)       \
   V(Float64RoundTiesAway)       \
   V(Float32RoundTiesEven)       \
   V(Float64RoundTiesEven)       \
   V(Float64ExtractLowWord32)    \
   V(Float64ExtractHighWord32)   \
@@ skipping 277 matching lines @@
   }
 };
 
 std::ostream& operator<<(std::ostream&, IrOpcode::Value);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_OPCODES_H_