[RISCV] Add DAG combine to turn (sub (shl X, 8-Y), (shr X, Y)) into orc.b#111828

dtcxzyw merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

damokeev:add_orcb_optimizationsdamokeev/llvm-project:add_orcb_optimizationsCopy head branch name to clipboard