freedreno/ir3/sched: try to avoid syncs

Similar to what we do in postsched.  It is useful for pre-RA sched to be
a bit aware of things that would cause syncs.  In particular for the tex
fetches, since the vecN src/dst tends to limit postsched's ability to
re-order them.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4923>
1 file changed