[Mesa-maintainers] AMD RadeonSI: Removing support for old LLVM

[Marek Olšák]

Hi,

For all AMD RadeonSI users, I plan to make the following changes to
LLVM requirements:

Mesa 18.2 will require LLVM 6.0.
Mesa 19.0 will require LLVM 7.0.

Are there any concerns?

Thanks,
Marek