DGH Data gathering hint This instruction is a hint instruction that indicates that it is not expected to be performance optimal to merge memory accesses with Normal Non-cacheable or Device-GRE attributes appearing in program order before the hint instruction with any memory accesses appearing after the hint instruction into a single memory transaction on an interconnect. 1 1 0 1 0 1 0 1 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 1 1 0 1 1 1 1 1 DGH if !IsFeatureImplemented(FEAT_DGH) then ExecuteAsNOP(); Hint_DGH();