ac/nir: don't combine multiple non-constant offsets into a global access

This isn't correct if the addition overflows.

No fossil-db changes (gfx1201, navi10, pitcairn).

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35465>
1 file changed