newbie: RTL syntax

[Jim Wilson]

Iman Narasamdya wrote:
> I would like to translate RTL representation to another more readable 
> representation, e.g.:

This has been suggested in the past, but we don't want two RTL dumpers, 
and the conflict has been left unresolved.  If you search gcc-patches 
archives, you might be able to find the one that was proposed earlier. 
I don't remember who wrote it or when, but I think it came from Apple.

> Without touching the source of RTL generator, it means that I have to 
> know the syntax of RTL representation, in order to parse it. I have 
> looked at the gcc internal manual, but it doesn't describe the syntax 
> completely. Is there any description of the syntax of RTL representation 
> out there? Or does anyone have RTL parser :-) ?

RTL is just a data structure.  There is no need to parse anything if you 
want a different pretty-printer.  You just print it out differently. 
See print_rtl in print-rtl.c.
-- 
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com