[builtins] Migrate Math.abs() to TurboFan builtins.

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 293 matching lines @@
 #define BUILTIN_LIST_T(V)             \
   V(FunctionPrototypeHasInstance, 2)  \
   V(GeneratorPrototypeNext, 2)        \
   V(GeneratorPrototypeReturn, 2)      \
   V(GeneratorPrototypeThrow, 2)       \
   V(MathAtan, 2)                      \
   V(MathAtan2, 3)                     \
   V(MathAtanh, 2)                     \
   V(MathCeil, 2)                      \
   V(MathCbrt, 2)                      \
+  V(MathAbs, 2)                       \
   V(MathExpm1, 2)                     \
   V(MathClz32, 2)                     \
   V(MathCos, 2)                       \
   V(MathCosh, 2)                      \
   V(MathExp, 2)                       \
   V(MathFloor, 2)                     \
   V(MathLog, 2)                       \
   V(MathLog1p, 2)                     \
   V(MathLog10, 2)                     \
   V(MathLog2, 2)                      \
@@ skipping 300 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 20.2.2.1 Math.abs ( x )
+  static void Generate_MathAbs(CodeStubAssembler* assembler);
   // 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 20.2.2.7 Math.atanh ( x )
   static void Generate_MathAtanh(CodeStubAssembler* assembler);
   // ES6 section 20.2.2.10 Math.ceil ( x )
   static void Generate_MathCeil(CodeStubAssembler* assembler);
   // ES6 section 20.2.2.9 Math.ceil ( x )
   static void Generate_MathCbrt(CodeStubAssembler* assembler);
@@ skipping 125 matching lines @@
   friend class BuiltinFunctionTable;
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_H_