[typedarrays] Implement %TypedArray%.prototype.lastIndexOf in C++

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 809 matching lines @@
   /* ES6 #sec-%typedarray%.prototype.keys */                                   \
   TFJ(TypedArrayPrototypeKeys, 0)                                              \
   /* ES6 #sec-%typedarray%.prototype.values */                                 \
   TFJ(TypedArrayPrototypeValues, 0)                                            \
   /* ES6 #sec-%typedarray%.prototype.copywithin */                             \
   CPP(TypedArrayPrototypeCopyWithin)                                           \
   /* ES7 #sec-%typedarray%.prototype.includes */                               \
   CPP(TypedArrayPrototypeIncludes)                                             \
   /* ES6 #sec-%typedarray%.prototype.indexof */                                \
   CPP(TypedArrayPrototypeIndexOf)                                              \
+  /* ES6 #sec-%typedarray%.prototype.indexof */                                \
+  CPP(TypedArrayPrototypeLastIndexOf)                                          \
                                                                                \
   /* Wasm */                                                                   \
   TFS(WasmStackGuard, BUILTIN, kNoExtraICState, WasmRuntimeCall, 1)            \
   TFS(ThrowWasmTrapUnreachable, BUILTIN, kNoExtraICState, WasmRuntimeCall, 1)  \
   TFS(ThrowWasmTrapMemOutOfBounds, BUILTIN, kNoExtraICState, WasmRuntimeCall,  \
       1)                                                                       \
   TFS(ThrowWasmTrapDivByZero, BUILTIN, kNoExtraICState, WasmRuntimeCall, 1)    \
   TFS(ThrowWasmTrapDivUnrepresentable, BUILTIN, kNoExtraICState,               \
       WasmRuntimeCall, 1)                                                      \
   TFS(ThrowWasmTrapRemByZero, BUILTIN, kNoExtraICState, WasmRuntimeCall, 1)    \
@@ skipping 162 matching lines @@
 
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_BUILTINS_H_