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

src/code-stub-assembler.h

Index: src/code-stub-assembler.h
diff --git a/src/code-stub-assembler.h b/src/code-stub-assembler.h
index e008a07a7452e7a00bc74008ccf9783d61178278..4033ee1ee79d697927c25fb826904ebd8e1bfb96 100644
--- a/src/code-stub-assembler.h
+++ b/src/code-stub-assembler.h
@@ -140,6 +140,9 @@ class CodeStubAssembler : public compiler::CodeAssembler {
     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);
@@ -295,6 +298,10 @@ class CodeStubAssembler : public compiler::CodeAssembler {
   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);