Query about configure flags for NVPTX backend

[Andrew Stubbs]

I do not know if we have any "simpler bugs"; you have chosen a hard-mode 
configuration to work on!

You can search gcc.gnu.org/bugzilla for "nvptx" and see if there's 
anything you'd like to work on.

This one is an interesting minor feature to implement, perhaps? 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104926 . Naming the 
registers would assist toolchain developers, but does not change the 
behaviour of the running code at all, and yet you would get to look into 
how things work in the internals, and what NVPTX assembler code looks 
like, and you'll have to figure out the list of "special" registers for 
yourself. (Hint: "print_operand", but beware rogue "printf".)

Hope that helps

Andrew

On 09/10/2025 11:34, Amruth Tetakali wrote:
> Thank you very much for the link to the wiki page. I have now
> successfully built the complete nvptx-none-gcc toolchain from the
> latest git source on my Ubuntu system.
> Now that I have a working build environment, I am eager to start contributing.
> As a newcomer to the codebase, could you perhaps recommend any
> simpler bugs that would be a good starting point?
> 
> Amruth
> 
> On Tue, 30 Sept 2025 at 13:07, Andrew Stubbs <ams@baylibre.com> wrote:
>>
>> On 28/09/2025 08:51, Amruth Tetakali via Gcc wrote:
>>> Hello,
>>>
>>> I am a student exploring the GCC source code with an interest in GPU
>>> programming and the NVPTX backend. I am in the process of setting up my
>>> development environment.
>>>
>>> I have successfully cloned the latest source from the git repository and
>>> installed the required prerequisites (GMP, MPFR, MPC, etc.) on my Linux
>>> system. I am now at the configure step.
>>>
>>> Could you please guide me on the essential ./configure flags that are
>>> required to build GCC with support for NVPTX offloading?
>>
>> There's a Wiki page that should cover this. You should probably read
>> over the whole page, but especially this section should help you:
>> https://gcc.gnu.org/wiki/Offloading#For_Nvidia_PTX: (the colon is part
>> of the URL).
>>
>> If the instructions aren't clear or are broken then please give feedback. :)
>>
>> Andrew