INDIRECT INSTRUCTION PREDICATION

摘要

A method, circuit arrangement, and program product for selectively predicating instructions in an instruction stream by determining a first register address from an instruction, determining a second register address based on a value stored at the first register address, and determining whether to predicate the instruction based at least in part on a value stored at the second register address. Predication logic may analyze the instruction to determine the first register address, analyze a register corresponding to the first register address to determine the second register address, and communicate a predication signal to an execution unit based at least in part on the value stored at the second register address.

主权项

1. A circuit arrangement, comprising:
a processing unit; a first register disposed in the processing unit; an execution unit disposed in the processing unit and configured to receive a predication enable signal that indicates whether to predicate an instruction and selectively predicate instructions based at least in part on the predication enable signal; and predication logic disposed in the processing unit and configured to receive a first register address corresponding to the first register included in the instruction, determine a second register address based at least in part on a value stored at the first register address of the first register, and communicate the predication enable signal based at least in part on a value stored at the second register address.