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1. (WO2016193654) DETERMINING A PREDICTED BEHAVIOUR FOR PROCESSING OF INSTRUCTIONS

Pub. No.:    WO/2016/193654    International Application No.:    PCT/GB2016/050908
Publication Date: Fri Dec 09 00:59:59 CET 2016 International Filing Date: Fri Apr 01 01:59:59 CEST 2016
IPC: G06F 9/38
G06F 9/30
Applicants: ARM LIMITED
Inventors: BATLEY, Max John
CRASKE, Simon John
CAULFIELD, Ian Michael
GREENHALGH, Peter Richard
SKILLMAN, Allan John
PENTON, Antony John
Title: DETERMINING A PREDICTED BEHAVIOUR FOR PROCESSING OF INSTRUCTIONS
Abstract:
An apparatus comprises prediction circuitry( 40, 100, 80) for determining, based on current prediction policy information (43, 82, 104), a predicted behaviour to be used for processing instructions. The current prediction policy information is updated based on an outcome of processing of instructions. A storage structure (50) stores at least one entry identifying previous prediction policy information (60) for a corresponding block of instructions. In response to an instruction from a block having a corresponding entry in the storage structure (50) which identifies the previous prediction policy information (60), the current prediction policy information (43, 82, 104) can be reset based on the previous prediction policy information 60 identified in the corresponding entry of the storage structure (50).