ldc nvvm GPU intrinsics good news

[Johan Engelen]

On Friday, 5 March 2021 at 00:03:26 UTC, Bruce Carneal wrote:
> After updating the first line to 
> '@compute(CompileFor.hostAndDevice) module ...' and adding an 
> 'import ldc.dcompute;' line, the 
> runtime/import/ldc/gccbuiltins_nvvm.di file from a current LDC 
> build apparently gives access to all manner of GPU intrinsics.

Hi Bruce,
   Why not submit a PR that modifies `gen_gccbuiltins.cpp` such 
that it adds the `@compute` attribute for the relevant intrinsics 
files?
I think it's OK if `gen_gccbuiltins` contains some hacks like 
that . Please add a small compile test case, so we verify that it 
won't bitrot in the future.

Wouldn't `@compute(CompileFor.deviceOnly)` make more sense, 
because the intrinsics will not be available on normal CPUs 
anyway?

I hope all your work will land in either LDC or dcompute's 
repositories, such that others can easily benefit from it.

cheers,
   Johan