Method for data validity tracking to determine fast or slow...

Electrical computers and digital processing systems: processing – Dynamic instruction dependency checking – monitoring or... – Scoreboarding – reservation station – or aliasing

Reexamination Certificate

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Reexamination Certificate

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07577825

ABSTRACT:
Devices, systems, and methods may perform micro-operation processing with data validity tracking to determine fast or slow mode processing at a reservation station. A method includes determining whether a condition related to validity of data in a reorder buffer of an out-of-order subsystem of a processor core is met, based on a criterion other than a valid data indication from said reorder buffer. In one embodiment, in a fast mode a reservation station may dispatch micro-operations to execution and in a slow mode the reservation station may wait for a valid indication from the reorder buffer prior to dispatching the micro-operation.

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Vallurri et al., “Evaluating Register Allocation and Instruction Scheduling Techniques in Out-of-Order Issue Processors”, 1999, 6 pages.

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