System and method of using speculative operand sources in order to speculatively bypass load-store operations

摘要

A system may include a scheduler and an execution core. The scheduler includes an entry allocated to an operation. The entry includes a non-speculative tag and a speculative tag, and both the non-speculative tag and the speculative tag are associated with a first operand of the operation. The scheduler is configured to issue the operation in response to a data value identified by the speculative tag being available. The execution core may be configured to execute the operation using the data value identified by the speculative tag. The scheduler may be configured to reissue the operation if the non-speculative tag appears on a result bus.