Quick and dirty support for RISC-V

[e-y-e via Digitalmars-d]

On Thursday, 5 January 2017 at 00:46:11 UTC, Nicholas Wilson 
wrote:
> On Wednesday, 4 January 2017 at 17:12:54 UTC, e-y-e wrote:
>> [...]
>
> Excellent!
>
> You said you did some hacking on LLVM so small LDC checklist:

On LDC only

> Have you set all the correct predefined versions?

I have defined RISCV and RISCV64, but I have some questions on 
how to go further than this.

> ABI?

Another thing I have to look into, I only changed the things 
necessary to make it work.

>
> If you have any questions please hop on to our gitter: 
> https://gitter.im/ldc-developers/main

Will do!