Value prediction

A non-transitory computer-readable medium storing computer-readable code for fabrication of an apparatus comprising:

• value prediction storage comprising a plurality of value prediction entries, each value prediction entry providing a data value prediction associated with a corresponding instruction;
• a value prediction allocation filter comprising a plurality of allocation filter entries, each allocation filter entry providing a counter value;
• and
• allocation circuitry configured to control allocation of value prediction entries in the value prediction storage;
• wherein
• the allocation circuitry is configured to identify a target allocation filter entry based on an identifier of a given instruction and an observed data value outcome of the given instruction;
• and
• the allocation circuitry is configured to suppress allocation of a value prediction entry corresponding to the given instruction in the value prediction storage in response to a determination that a target counter value in the target allocation filter entry does not meet an allocation threshold.

A method, comprising

• storing a plurality of value prediction entries in value prediction storage, each value prediction entry providing a data value prediction associated with a corresponding instruction;
• providing a value prediction allocation filter comprising a plurality of allocation filter entries, each allocation filter entry providing a counter value;
• controlling allocation of value prediction entries in the value prediction storage;
• identifying a target allocation filter entry based on an identifier of a given instruction and an observed data value outcome of the given instruction;
• and
• suppressing allocation of a value prediction entry corresponding to the given instruction in the value prediction storage in response to a determination that a target counter value in the target allocation filter entry does not meet an allocation threshold.