[builtins] implement JSBuiltinReducer for ArrayIteratorNext()

src/compiler/js-builtin-reducer.h

 // Copyright 2014 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_COMPILER_JS_BUILTIN_REDUCER_H_
 #define V8_COMPILER_JS_BUILTIN_REDUCER_H_
 
 #include "src/base/compiler-specific.h"
 #include "src/base/flags.h"
 #include "src/compiler/graph-reducer.h"
@@ skipping 27 matching lines @@
   typedef base::Flags<Flag> Flags;
 
   JSBuiltinReducer(Editor* editor, JSGraph* jsgraph, Flags flags,
                    CompilationDependencies* dependencies,
                    Handle<Context> native_context);
   ~JSBuiltinReducer() final {}
 
   Reduction Reduce(Node* node) final;
 
  private:
+  Reduction ReduceArrayIterator(Node* node, IterationKind kind);
+  Reduction ReduceTypedArrayIterator(Node* node, IterationKind kind);
+  Reduction ReduceArrayIterator(Handle<Map> receiver_map, Node* node,
+                                IterationKind kind, bool for_typed_array);
+  Reduction ReduceArrayIteratorNext(Node* node);
+  Reduction ReduceFastArrayIteratorNext(Handle<Map> iterator_map, Node* node,
+                                        IterationKind kind);
+  Reduction ReduceTypedArrayIteratorNext(Handle<Map> iterator_map, Node* node,
+                                         IterationKind kind);
   Reduction ReduceArrayPop(Node* node);
   Reduction ReduceArrayPush(Node* node);
   Reduction ReduceDateGetTime(Node* node);
   Reduction ReduceGlobalIsFinite(Node* node);
   Reduction ReduceGlobalIsNaN(Node* node);
   Reduction ReduceMathAbs(Node* node);
   Reduction ReduceMathAcos(Node* node);
   Reduction ReduceMathAcosh(Node* node);
   Reduction ReduceMathAsin(Node* node);
   Reduction ReduceMathAsinh(Node* node);
@@ skipping 60 matching lines @@
   TypeCache const& type_cache_;
 };
 
 DEFINE_OPERATORS_FOR_FLAGS(JSBuiltinReducer::Flags)
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_JS_BUILTIN_REDUCER_H_