Generate the TransitionElementsStub using Crankshaft

src/compiler.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
@@ skipping 112 matching lines @@
   }
 
   void MarkAsNonDeferredCalling() {
     flags_ |= IsNonDeferredCalling::encode(true);
   }
 
   bool is_non_deferred_calling() const {
     return IsNonDeferredCalling::decode(flags_);
   }
 
+  void MarkAsSavesCallerDoubles() {
+    flags_ |= SavesCallerDoubles::encode(true);
+  }
+
+  bool saves_caller_doubles() const {
+    return SavesCallerDoubles::decode(flags_);
+  }
+
   void SetFunction(FunctionLiteral* literal) {
     ASSERT(function_ == NULL);
     function_ = literal;
   }
   void SetScope(Scope* scope) {
     ASSERT(scope_ == NULL);
     scope_ = scope;
   }
   void SetGlobalScope(Scope* global_scope) {
     ASSERT(global_scope_ == NULL);
@@ skipping 125 matching lines @@
   class SupportsDeoptimization: public BitField<bool, 7, 1> {};
   // If compiling for debugging produce just full code matching the
   // initial mode setting.
   class IsCompilingForDebugging: public BitField<bool, 8, 1> {};
   // If the compiled code contains calls that require building a frame
   class IsCalling: public BitField<bool, 9, 1> {};
   // If the compiled code contains calls that require building a frame
   class IsDeferredCalling: public BitField<bool, 10, 1> {};
   // If the compiled code contains calls that require building a frame
   class IsNonDeferredCalling: public BitField<bool, 11, 1> {};
+  // If the compiled code saves double caller registers that it clobbers.
+  class SavesCallerDoubles: public BitField<bool, 12, 1> {};
 
 
   unsigned flags_;
 
   // Fields filled in by the compilation pipeline.
   // AST filled in by the parser.
   FunctionLiteral* function_;
   // The scope of the function literal as a convenience.  Set to indicate
   // that scopes have been analyzed.
   Scope* scope_;
@@ skipping 232 matching lines @@
 
   static void RecordFunctionCompilation(Logger::LogEventsAndTags tag,
                                         CompilationInfo* info,
                                         Handle<SharedFunctionInfo> shared);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_