X64: Count operations (increment, decrement)

src/x64/assembler-x64.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 64 matching lines @@
 // and best performance in optimized code.
 //
 
 struct Register {
   static Register toRegister(int code) {
     Register r = { code };
     return r;
   }
   bool is_valid() const  { return 0 <= code_ && code_ < 16; }
   bool is(Register reg) const  { return code_ == reg.code_; }
-  // The byte-register distinction of ai32 has dissapeared.

[William Hesse, 2009/06/25 10:46:05]

ia32

-  bool is_byte_register() const  { return false; }
   int code() const  {
     ASSERT(is_valid());
     return code_;
   }
   int bit() const  {
     return 1 << code_;
   }
 
   // Return the high bit of the register code as a 0 or 1.  Used often
   // when constructing the REX prefix byte.
@@ skipping 1058 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_ASSEMBLER_X64_H_