[Bug d/87816] D runtime fails to build on aarch64

[ibuclaw at gdcproject dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87816

--- Comment #1 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
I've received patches here for aarch64.

https://github.com/D-Programming-GDC/GDC/pull/744

I'll push them in once tested.