Handle single element array growth + transition in generic KeyedStoreIC

src/arm/macro-assembler-arm.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
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   // Leave the current exit frame. Expects the return value in r0.
   // Expect the number of values, pushed prior to the exit frame, to
   // remove in a register (or no_reg, if there is nothing to remove).
   void LeaveExitFrame(bool save_doubles, Register argument_count);
 
   // Get the actual activation frame alignment for target environment.
   static int ActivationFrameAlignment();
 
   void LoadContext(Register dst, int context_chain_length);
 
-  // Load the initial map for new Arrays of a given type.
-  void LoadGlobalInitialConstructedArrayMap(Register function_in,
-                                            Register scratch,
-                                            Register map_out);
+  // Conditionally load the cached Array transitioned map of type
+  // transitioned_kind from the global context if the map in register
+  // map_in_out is the cached Array map in the global context of
+  // expected_kind.
+  void LoadTransitionedArrayMapConditional(
+      ElementsKind expected_kind,
+      ElementsKind transitioned_kind,
+      Register map_in_out,
+      Register scratch,
+      Label* no_map_match);
+
+  // Load the initial map for a new Arrays from a JSFunction.
+  void LoadInitialArrayMap(Register function_in,
+                           Register scratch,
+                           Register map_out);
 
   void LoadGlobalFunction(int index, Register function);
 
   // Load the initial map from the global function. The registers
   // function and map can be the same, function is then overwritten.
   void LoadGlobalFunctionInitialMap(Register function,
                                     Register map,
                                     Register scratch);
 
   void InitializeRootRegister() {
@@ skipping 843 matching lines @@
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_MACRO_ASSEMBLER_ARM_H_