Read directly from the instruction getting spilt. Otherwise a fill
will be inserted before the spill writing the value, so the
instruction reading the spilt value gets garbage data.
Use the bundle_id to check if the instructions are in the same bundle.
Insert a move instruction, as the spill needs the value in a LD/ST
register such as AL0, while the ALU instruction reading the value
needs it in a work register such as R0.
Cc: mesa-stable
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/4857
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11212>
Icecream95
38e8d7afe3