Hydrogen stubs for array constructors

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 125 matching lines @@
   }
 
   void MarkAsSavesCallerDoubles() {
     flags_ |= SavesCallerDoubles::encode(true);
   }
 
   bool saves_caller_doubles() const {
     return SavesCallerDoubles::decode(flags_);
   }
 
+  void MarkAsStubThatUsesArguments() {
+    flags_ |= StubThatUsesArguments::encode(true);
+  }
+
+  bool stub_that_uses_arguments() const {
+    return StubThatUsesArguments::decode(flags_);
+  }
+
   void SetParseRestriction(ParseRestriction restriction) {
     flags_ = ParseRestricitonField::update(flags_, restriction);
   }
 
   ParseRestriction parse_restriction() const {
     return ParseRestricitonField::decode(flags_);
   }
 
   void SetFunction(FunctionLiteral* literal) {
     ASSERT(function_ == NULL);
@@ skipping 137 matching lines @@
   // 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> {};
   // If the set of valid statements is restricted.
   class ParseRestricitonField: public BitField<ParseRestriction, 13, 1> {};
+  // Is this a hydrogen stub that insists on using arguments?
+  class StubThatUsesArguments: public BitField<bool, 14, 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_;
   // The global scope provided as a convenience.
@@ skipping 231 matching lines @@
 
   static void RecordFunctionCompilation(Logger::LogEventsAndTags tag,
                                         CompilationInfo* info,
                                         Handle<SharedFunctionInfo> shared);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_