Control of switching between executed mechanisms
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United States of America Patent
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Jan 16, 2018
Grant Date -
Jan 7, 2016
app pub date -
Jul 3, 2014
filing date -
Jul 3, 2014
priority date (Note) -
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Abstract
A data processing apparatus includes a first execution mechanism, such as an out-of-order processing circuitry, and a second execution mechanism 6 such as an in-order processing circuitry. Switching control circuitry controls switching between which of the first execution circuitry and the second execution circuitry is active at a given time. Latency indicating signals indicative of the latency associated with a candidate switching operation to be performed are supplied to the switching control circuitry and used to control the switching operation. The control of the switching operation may be to accelerate the switching operation, prevent the switching operation, perform early architectural state data transfer or other possibilities.
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