On Mon, Jun 14, 2010 at 12:25 AM, Basile Starynkevitch <bas...@starynkevitch.net> wrote: > > Why do you want to optimize the generated assembly code? AFAIK, all > optimization passes in GCC work on some intermediate representation > which is not the assembly code, and many of them work on Gimple. > ... > ... GCC emit textual assembly code. The > assembler (that is binutils, not GCC) know that nop is 0f 1f. > > Cheers. > > PS. I might have some details wrong; I am not very familiar with GCC > back-ends & RTL passes. > > -- > Basile STARYNKEVITCH http://starynkevitch.net/Basile/ > email: basile<at>starynkevitch<dot>net mobile: +33 6 8501 2359 > 8, rue de la Faiencerie, 92340 Bourg La Reine, France > *** opinions {are only mines, sont seulement les miennes} *** > >
Yes, thanks. I have already seen that GCC does not have the instruction codes. Nevertheless I have to work on the low-level. At the back-end. It is a feature of my work :). So, maybe I'll just switch to inserting my code into binutils, or mao project. Ilya K
