[builtins] implement Array.prototype[@@iterator] in TFJ builtins

src/code-stub-assembler.h

 // Copyright 2016 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_CODE_STUB_ASSEMBLER_H_
 #define V8_CODE_STUB_ASSEMBLER_H_
 
 #include <functional>
 
 #include "src/compiler/code-assembler.h"
@@ skipping 122 matching lines @@
   compiler::Node* SmiMax(compiler::Node* a, compiler::Node* b);
   compiler::Node* SmiMin(compiler::Node* a, compiler::Node* b);
   // Computes a % b for Smi inputs a and b; result is not necessarily a Smi.
   compiler::Node* SmiMod(compiler::Node* a, compiler::Node* b);
   // Computes a * b for Smi inputs a and b; result is not necessarily a Smi.
   compiler::Node* SmiMul(compiler::Node* a, compiler::Node* b);
   compiler::Node* SmiOr(compiler::Node* a, compiler::Node* b) {
     return WordOr(a, b);
   }
 
+  // Smi | HeapNumber operations.
+  compiler::Node* NumberInc(compiler::Node* value);
+
   // Allocate an object of the given size.
   compiler::Node* Allocate(compiler::Node* size, AllocationFlags flags = kNone);
   compiler::Node* Allocate(int size, AllocationFlags flags = kNone);
   compiler::Node* InnerAllocate(compiler::Node* previous, int offset);
   compiler::Node* InnerAllocate(compiler::Node* previous,
                                 compiler::Node* offset);
 
   void Assert(compiler::Node* condition);
 
   // Check a value for smi-ness
@@ skipping 135 matching lines @@
       int additional_offset = 0,
       ParameterMode parameter_mode = INTEGER_PARAMETERS,
       Label* if_hole = nullptr);
 
   // Load Float64 value by |base| + |offset| address. If the value is a double
   // hole then jump to |if_hole|. If |machine_type| is None then only the hole
   // check is generated.
   compiler::Node* LoadDoubleWithHoleCheck(
       compiler::Node* base, compiler::Node* offset, Label* if_hole,
       MachineType machine_type = MachineType::Float64());
+  compiler::Node* LoadFixedTypedArrayElement(
+      compiler::Node* data_pointer, compiler::Node* index_node,
+      ElementsKind elements_kind,
+      ParameterMode parameter_mode = INTEGER_PARAMETERS);
 
   // Context manipulation
   compiler::Node* LoadContextElement(compiler::Node* context, int slot_index);
   compiler::Node* StoreContextElement(compiler::Node* context, int slot_index,
                                       compiler::Node* value);
   compiler::Node* LoadNativeContext(compiler::Node* context);
 
   compiler::Node* LoadJSArrayElementsMap(ElementsKind kind,
                                          compiler::Node* native_context);
 
@@ skipping 650 matching lines @@
                                            Label* bailout);
 
   static const int kElementLoopUnrollThreshold = 8;
 };
 
 DEFINE_OPERATORS_FOR_FLAGS(CodeStubAssembler::AllocationFlags);
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_CODE_STUB_ASSEMBLER_H_