; From: Beignet [mailto:beignet-boun...@lists.freedesktop.org] On Behalf Of
> Zhigang Gong
> Sent: Wednesday, September 16, 2015 10:46 AM
> To: beignet@lists.freedesktop.org
> Cc: Gong, Zhigang
> Subject: [Beignet] [PATCH] GBE: implement pre-register-allocation instruction
> sche
To find out an instruction scheduling policy to achieve the theoretical minimum
registers required in a basic block is a NP problem. We have to use some
heuristic
factor to simplify the algorithm. There are many researchs which indicate a
bottom-up list scheduling is much better than the top-down
