[builtins] Implement Array.prototype.reduce in the CSA

src/builtins/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_BUILTINS_H_
 #define V8_BUILTINS_BUILTINS_H_
 
 #include "src/base/flags.h"
 #include "src/globals.h"
 
@@ skipping 278 matching lines @@
   TFJ(ArrayForEach, 2, kCallbackFn, kThisArg)                                  \
   /* ES6 #sec-array.prototype.every */                                         \
   TFJ(ArrayEveryLoopContinuation, 6)                                           \
   TFJ(ArrayEvery, 2, kCallbackFn, kThisArg)                                    \
   /* ES6 #sec-array.prototype.some */                                          \
   TFJ(ArraySomeLoopContinuation, 6)                                            \
   TFJ(ArraySome, 2, kCallbackFn, kThisArg)                                     \
   /* ES6 #sec-array.prototype.filter */                                        \
   TFJ(ArrayFilterLoopContinuation, 6)                                          \
   TFJ(ArrayFilter, 2, kCallbackFn, kThisArg)                                   \
+  /* ES6 #sec-array.prototype.reduce */                                        \
+  TFJ(ArrayReduceLoopContinuation, 6)                                          \
+  TFJ(ArrayReduce, 2, kCallbackFn, kInitialValue)                              \
   /* ES6 #sec-array.prototype.entries */                                       \
   TFJ(ArrayPrototypeEntries, 0)                                                \
   /* ES6 #sec-array.prototype.keys */                                          \
   TFJ(ArrayPrototypeKeys, 0)                                                   \
   /* ES6 #sec-array.prototype.values */                                        \
   TFJ(ArrayPrototypeValues, 0)                                                 \
   /* ES6 #sec-%arrayiteratorprototype%.next */                                 \
   TFJ(ArrayIteratorPrototypeNext, 0)                                           \
                                                                                \
   /* ArrayBuffer */                                                            \
@@ skipping 752 matching lines @@
 
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_BUILTINS_H_