This is a rewite of the NIR backend. it adds some optimization
and a scheduler.
v2: - replace some magic numbers by constants
- make sure constructor is always used with new
- use default initialization in more places
(changes suggested by Filip Gawin)
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Filip Gawin <filip@gawin.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17076>