Re: seek advice about GCC learning

[weizhe wang <hmsjwzb@zoho.com>]

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Hi Guys,



      Can we build risv-32 gcc compiler from official gcc repository ?



Thanks,



Flint



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---- On Thu, 02 Feb 2023 05:21:36 -0800 Martin Jambor <mjambor@suse.cz> wrote ---



Hello Flint, 
 
On Sat, Jan 28 2023, hmsjwzb via Gcc wrote: 
> Hi GCC developers, 
> 
>     I am learning GCC. But the GCC code is hard to understand. 
 
We are delighted you found looking into GCC interesting.  I definitely 
agree that GCC source can be hard to read, especially for newcomers but 
often even for seasoned contributors when they look at a part they are 
not familiar with.  But when you manage to manage to overcome the 
difficulty, the project can be very rewarding.  And so not hesitate to 
ask us any specific question you may have here on the mailing list or on 
IRC. 
 
>     I'm reading the c compiler of GCC. It seems the understanding of 
>     AST/GENERIC representation is very important. Is there a tool 
>     can visualize the AST/GENERIC representation? 
 
Intermediate representations like GENERIC, GIMPLE and RTL are indeed 
fundamental.  In order to see the representation of instructions, 
compile a simple program with option -fdump-tree-all and examine the 
many files that will appear in your working directory (representation of 
things like aggregate data types is unfortunately somewhat missing). 
 
> 
>     Do you have some advice for GCC beginner? Is there some documentations can help in the learning of GCC? 
 
David Malcolm wrote a very nice set of tutorials about various aspects 
of starting with GCC: 
https://gcc-newbies-guide.readthedocs.io/en/latest/ 
 
I believe that is the best generic resource there is. 
 
Good luck, 
 
Martin