1. A method comprising: accessing stored context of present operating state of a processor to determine if a segment check operation can be eliminated when executing a memory access; accessing said stored context to determine whether a base add operation can be eliminated when executing said memory access; and issuing a base add instruction if said stored context does not indicate said base add operation can be eliminated when executing said memory access, wherein said base add instruction initiates said base add operation to generate a linear address for said memory address.