Arm Limited

Li Ma

Yasuo Ishii

Abhishek Raja

William Elton Burky

Alexander Cole Shulyak

Glen Andrew Harris

Michael David Achenbach

Bipin Prasad Heremagalur Ramaprasad

Nicholas Andrew Plante

There is provided an apparatus, method and medium. The apparatus comprises processing circuitry to process instructions and a reorder buffer identifying a plurality of entries having state information associated with execution of one or more of the instructions. The apparatus comprises allocation circuitry to allocate entries in the reorder buffer, and to allocate at least one compressed entry corresponding to a plurality of the instructions. The apparatus comprises memory access circuitry responsive to an address associated with a memory access instruction corresponding to access-sensitive memory and the memory access instruction corresponding to the compressed entry, to trigger a reallocation procedure comprising flushing the memory access instruction and triggering reallocation of the memory access instruction without the compression. The allocation circuitry is responsive to a frequency of occurrence of memory access instructions addressing the access-sensitive memory meeting a predetermined condition, to suppress the compression whilst the predetermined condition is met.

Compression of entries in a reorder buffer

Growing community of inventors

Austin, TX, United States of America

Li Ma