Looking for someone that could work on 32 bits support for SDC

[deadalnix via Digitalmars-d]

On Friday, 11 September 2015 at 01:12:21 UTC, Brandon Ragland 
wrote:
> On Wednesday, 9 September 2015 at 20:33:43 UTC, deadalnix wrote:
>> All is in the title.
>>
>> ARM/Mips/pNaCl/WebAssembly require 32bits to work. These are 
>> valuable targets IMO.
>>
>> I can provide support, but I just don't have the bandwidth to 
>> pull it by myself. If someone could step up, that'd be great.
>
> I'd love to see MIPS support myself.
>
> It may be against my better judgment, but I'm more than willing 
> t assist you on this.
>
> Care to elaborate on the more precise drill-down?

Sure. First thing first, try to checkout the project and get it 
to build and pass the tests (well, some tests will fail, but you 
should get 0 regressions).

Step 2 would be to modify the test runner to be able to run in 64 
or 32 bits. Some tests will have a different result in 32 bits, 
notably the ones that use the pointer size somewhere. 
(tests/runner.d)

Step 3 add a m32/m64 flags to SDC. It is using the getopt from 
phobos and that should be fairly straightforward. (sdc/src/main.d)

Step 4 go through the codegen (libd-llvm) and update it to take 
the flag into account. (that's the big chunk). There may be some 
places in the frontend that assume 64 bits pointers, but if so, 
not many.

Step 5 go through the runtime and do the same. There shouldn't be 
many here as well, but I'm not sure.

In a first instance, I guess the right move is to target x86 
because it is fairly close to x64 so it should work with minimal 
changes in the runtime.

You can jump in IRC if you want to talk more about the details.