Thanks for your reply. Is there some guide for building rv32 cross compiler gcc ? I encounter some error in the building progress. Sent using https://www.zoho.com/mail/ ---- On Mon, 25 Sep 2023 23:40:51 -0700 Jonathan Wakely wrote --- On Tue, 26 Sept 2023, 03:11 weizhe wang via Gcc, wrote: Hi Guys,       Can we build risv-32 gcc compiler from official gcc repository ? Yes, lots of people do that. Thanks, Flint Sent using https://www.zoho.com/mail/ ---- On Thu, 02 Feb 2023 05:21:36 -0800 Martin Jambor 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