Resolving operand store compare conflicts

Managing program instruction execution by receiving a first OSC (operand store compare) instruction, the first OSC instruction comprising a first itag and a first instruction address and creating a first OSC table entry according to the first itag and first instruction address. Further, receiving a second OSC instruction, the second OSC instruction comprising a second itag and a second instruction address and creating a second OSC table entry according to the second itag and an itag delta between the first itag and the second itag, then appending the second OSC table entry according to an itag delta between the second itag and a third itag, and providing an itag delta from the second OSC table entry to an instruction sequencing unit (ISU).