IA32: Avoid going into stubs or runtime code for bitops even if the...

src/codegen.h

 // Copyright 2006-2008 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 302 matching lines @@
 #endif
 
   inline void Jump();
   inline void Branch(Condition cc);
   void BindExit() { masm_->bind(&exit_label_); }
 
   const FrameRegisterState* frame_state() const { return &frame_state_; }
 
   void SaveRegisters();
   void RestoreRegisters();
+  void Exit();
+  virtual bool AutoSaveAndRestore() { return true; }

[Lasse Reichstein, 2010/08/06 08:20:12]

I know it's not widespread in V8, but please add comments saying what the
functions do.

 
  protected:
   MacroAssembler* masm_;
 
  private:
   int statement_position_;
   int position_;
 
   Label entry_label_;
   Label exit_label_;
@@ skipping 555 matching lines @@
   StringCharFromCodeGenerator char_from_code_generator_;
 
   DISALLOW_COPY_AND_ASSIGN(StringCharAtGenerator);
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODEGEN_H_