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US 2023/0409335 A1Published application
Selective disable of history-based predictors on mode transitions
AssigneeIntel Corporation
InventorsMathew Lowes, Jared Warner Stark, IV, Martin Licht
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Abstract
Techniques for selective disable of history-based predictors on mode transitions are described. An example apparatus comprises first circuitry to provide a history-based prediction, and second circuitry coupled to the first circuitry to selectively block and unblock a prediction from the first circuitry after a mode transition. Other examples are disclosed and claimed.
Claims24
An apparatus comprising:
- first circuitry to provide a history-based prediction;
- and
- second circuitry coupled to the first circuitry to selectively block and unblock a prediction from the first circuitry after a mode transition.
A method comprising:
- providing a history-based branch prediction for one or more instructions to be executed;
- and
- selectively blocking and unblocking a branch prediction after a mode transition.
An apparatus comprising:
- a first unit to decode one or more instructions;
- and
- a second unit coupled to the first unit to execute the one or more decoded instructions, the first unit including:
- first circuitry to provide a branch prediction based on one or more prediction tables;
- and
- second circuitry coupled to the first circuitry to selectively block and unblock a branch prediction from one or more of the one or more prediction tables after a transition from a first mode to a second mode.
3 more elements
Dependencies are inferred from the claim text.