Arm Limited

Diogo Augusto Pereira Marques

Damien Matthieu Valentin Cathrine

Ugo Castorina

Marco Coletta

An apparatus for improving the tracking of streams of memory accesses for training a stride prefetcher is provided, comprising a training data structure storing entries for training a stride prefetcher, a given entry specifying: a stride offset, a target address, a program counter address, and a bypass indicator indicating whether a program counter match condition is to be bypassed for the given entry; and training control circuitry to determine whether to update the stride offset for the given entry of the training data structure to specify a current stride between a target address of a current memory access and the target address for the last memory access of the tracked stream, in which the determination by the training control circuitry is controlled to be either dependent on a determination of whether the program counter match condition is satisfied or independent of whether the program counter match condition is satisfied, based on the bypass indicator.

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Biot, France

Diogo Augusto Pereira Marques