Freescale Semiconductor,inc.

Hassan Al Sukhni

James C Holt

Puneet Sharma

Kamal S Khouri

A set of instructions executable at an integrated circuit is partitioned into multiple instruction blocks. A first and second instruction block are executed multiple times, including a first execution and a second execution. The first execution of the first instruction block is associated with a first set of executions, and the first execution of the second instruction block is associated with a second set of executions. A first amount of energy consumption representative of a member of the first set of executions is determined, and a second amount of energy consumption representative of a member of the second set of executions is determined. The first amount of energy is assigned to each member of the first set, and the second amount of energy is assigned to each member of the second set, and used to determine a total amount of energy consumption associated with execution of the set of instructions.

Power estimation method and device therefor

A first prefetch engine from a first plurality of prefetch engines is allocated to a first load instruction in response to a buffer miss of an iteration of the first load instruction in a program stream. The first plurality of prefetch engines include prefetch engines for prefetching data from memory to a buffer based on a predicted stride. A second prefetch engine from a second plurality of prefetch engines is allocated to the first load instruction in response to the buffer miss. The second plurality of prefetch engines include prefetch engines for prefetching data from memory to the buffer based on an instruction loop representative of a sequence of instructions that affect an address value associated with an allocated load instruction. One of the first or second prefetch engines is deallocated if the other prefetch engine achieves a prefetch performance greater than a first threshold value.

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Austin, TX, United States of America

Hassan Al Sukhni