[builtins] Introduce proper Float64Log1p operator.

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 307 matching lines @@
 // 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(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)                  \
   V(StringFromCharCode, 2)            \
   V(StringPrototypeCharAt, 2)         \
   V(StringPrototypeCharCodeAt, 2)     \
   V(TypedArrayPrototypeByteLength, 1) \
   V(TypedArrayPrototypeByteOffset, 1) \
@@ skipping 277 matching lines @@
   static void Generate_ArrayCode(MacroAssembler* masm);
 
   // 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);
   enum class MathMaxMinKind { kMax, kMin };
   static void Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind);
   // ES6 section 20.2.2.24 Math.max ( value1, value2 , ...values )
   static void Generate_MathMax(MacroAssembler* masm) {
     Generate_MathMaxMin(masm, MathMaxMinKind::kMax);
   }
   // ES6 section 20.2.2.25 Math.min ( value1, value2 , ...values )
   static void Generate_MathMin(MacroAssembler* masm) {
     Generate_MathMaxMin(masm, MathMaxMinKind::kMin);
   }
@@ skipping 85 matching lines @@
   friend class BuiltinFunctionTable;
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_H_