[builtins] Introduce proper Float64Atan and Float64Atan2 operators.

src/builtins.h

 // Copyright 2011 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_BUILTINS_H_
 #define V8_BUILTINS_H_
 
 #include "src/base/flags.h"
 #include "src/handles.h"
 
@@ skipping 113 matching lines @@
   V(GlobalEscape, kNone)                                       \
   V(GlobalUnescape, kNone)                                     \
                                                                \
   V(GlobalEval, kTarget)                                       \
                                                                \
   V(JsonParse, kNone)                                          \
   V(JsonStringify, kNone)                                      \
                                                                \
   V(MathAcos, kNone)                                           \
   V(MathAsin, kNone)                                           \
-  V(MathAtan, kNone)                                           \
   V(MathFround, kNone)                                         \
   V(MathImul, kNone)                                           \
                                                                \
   V(ObjectAssign, kNone)                                       \
   V(ObjectCreate, kNone)                                       \
   V(ObjectDefineGetter, kNone)                                 \
   V(ObjectDefineProperties, kNone)                             \
   V(ObjectDefineProperty, kNone)                               \
   V(ObjectDefineSetter, kNone)                                 \
   V(ObjectEntries, kNone)                                      \
@@ skipping 169 matching lines @@
   V(MarkCodeAsExecutedOnce, BUILTIN, kNoExtraICState)                        \
   V(MarkCodeAsExecutedTwice, BUILTIN, kNoExtraICState)                       \
   CODE_AGE_LIST_WITH_ARG(DECLARE_CODE_AGE_BUILTIN, V)
 
 // Define list of builtins implemented in TurboFan (with JS linkage).
 #define BUILTIN_LIST_T(V)             \
   V(FunctionPrototypeHasInstance, 2)  \
   V(GeneratorPrototypeNext, 2)        \
   V(GeneratorPrototypeReturn, 2)      \
   V(GeneratorPrototypeThrow, 2)       \
+  V(MathAtan, 2)                      \
+  V(MathAtan2, 3)                     \
   V(MathCeil, 2)                      \
   V(MathClz32, 2)                     \
   V(MathFloor, 2)                     \
   V(MathLog, 2)                       \
   V(MathLog1p, 2)                     \
   V(MathRound, 2)                     \
   V(MathSqrt, 2)                      \
   V(MathTrunc, 2)                     \
   V(ObjectHasOwnProperty, 2)          \
   V(ArrayIsArray, 2)                  \
@@ skipping 274 matching lines @@
 
   static void Generate_FunctionPrototypeApply(MacroAssembler* masm);
   static void Generate_FunctionPrototypeCall(MacroAssembler* masm);
 
   static void Generate_ReflectApply(MacroAssembler* masm);
   static void Generate_ReflectConstruct(MacroAssembler* masm);
 
   static void Generate_InternalArrayCode(MacroAssembler* masm);
   static void Generate_ArrayCode(MacroAssembler* masm);
 
+  // ES6 section 20.2.2.6 Math.atan ( x )
+  static void Generate_MathAtan(CodeStubAssembler* assembler);
+  // ES6 section 20.2.2.8 Math.atan2 ( y, x )
+  static void Generate_MathAtan2(CodeStubAssembler* assembler);
   // ES6 section 20.2.2.10 Math.ceil ( x )
   static void Generate_MathCeil(CodeStubAssembler* assembler);
   // ES6 section 20.2.2.11 Math.clz32 ( x )
   static void Generate_MathClz32(CodeStubAssembler* assembler);
   // ES6 section 20.2.2.16 Math.floor ( x )
   static void Generate_MathFloor(CodeStubAssembler* assembler);
   // ES6 section 20.2.2.20 Math.log ( x )
   static void Generate_MathLog(CodeStubAssembler* assembler);
   // ES6 section 20.2.2.21 Math.log ( x )
   static void Generate_MathLog1p(CodeStubAssembler* assembler);
@@ skipping 95 matching lines @@
   friend class BuiltinFunctionTable;
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_H_