DISAMBIGUATION-FREE OUT OF ORDER LOAD STORE QUEUE

摘要

In a processor, a disambiguation-free out of order load store queue method. The method includes implementing a memory resource that can be accessed by a plurality of asynchronous cores; implementing a store retirement buffer, wherein stores from a store queue have entries in the store retirement buffer in original program order; and upon dispatch of a subsequent load from a load queue, searching the store retirement buffer for address matching. The method further includes in cases where there are a plurality of address matches, locating a correct forwarding entry by scanning for the store retirement buffer for a first match; and forwarding data from the first match to the subsequent load.

主权项

1. In a processor, a disambiguation-free out of order load store queue method, comprising:
implementing a memory resource that can be accessed by a plurality of asynchronous cores; implementing a store retirement buffer, wherein stores from a store queue have entries in the store retirement buffer in original program order; upon dispatch of a subsequent load from a load queue, searching the store retirement buffer for address matching; in cases where there are a plurality of address matches, locating a correct forwarding entry by scanning for the store retirement buffer for a first match; and forwarding data from the first match to the subsequent load.