We would set the `src` flag on the interval of reloaded sources.
However, the interval might be merged with its parent when inserted and
the parent wouldn't have this flag set. This caused the parent interval
to potentially be reused to reload later sources. Fix this by setting
the `src` flag on the top-level interval after insertion.
Signed-off-by: Job Noorman <jnoorman@igalia.com>
Fixes: fa22b0901a ("ir3/ra: Add specialized shared register RA/spilling")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33810>
2d540b8074