What gcc to use for gdc master?

[Dan Olson via D.gnu]

"Iain Buclaw via D.gnu" <d.gnu at puremagic.com> writes:

> I hope I'm not shying you away by saying, this is what someone needs
> to find out.

No, not at all. I've gotten pretty used to puzzling through TLS
implementations for LDC porting.

> I'd first suggest to build gcc only and test what is outputted. Use a
> test program such as __thread int tls; and a main program that sets
> it's value to 0xdeadbeef then build with -S and check if the output
> shows calls to emutls like functions.
>
> GDC already has GC support for emutls, so the interesting part is if
> GCC does native tls on osx.

Yep, I'll try it.