Clean buffer usage in merge RD checking functions
In this MR, only buffer part is changed. I will further refactor xCheckRDCostMerge2Nx2N.
To be safe, I launched class B, C, D, E, F tests. Will report results later.
In this MR, only buffer part is changed. I will further refactor xCheckRDCostMerge2Nx2N.
To be safe, I launched class B, C, D, E, F tests. Will report results later.