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Electrical Computers And Digital Processing Systems: Processing Architectures And Instruction Processing (e.g., Processors) > Processing Control > Branching (e.g., Delayed Branch, Loop Control, Branch Predict, Interrupt) > Conditional Branching > Branch Prediction > History Table History TableHistory Table patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.08/24/06 - 20060190710 - Suppressing update of a branch history register by loop-ending branches Conditional branch instructions that terminate code loops are detected, and a Branch History Register (BHR) is prevented from updating to store the loop-ending branch evaluations. This prevents the branch that implements loop iterations from displacing other branch evaluation histories from the BHR. The loop-ending branch may be detected statically, by ... 08/24/06 - 20060190709 - Method and system for branch prediction A system and method for predicting the outcome of a conditional branch within a computer system, the method comprising the steps of identifying (105) the occurrence of a conditional branch, obtaining (106) data relating to system activity since a previous branch, comparing (110) said data with data relating to previous ... 07/06/06 - 20060149951 - Method and apparatus for updating global branch history information A method and apparatus for updating global branch history information are disclosed. A dynamic branch predictor within a data processing system includes a global branch history (GBH) buffer and a branch history table. The GBH buffer contains GBH information of a group of the most recent branch instructions. The branch ... 05/25/06 - 20060112262 - Branch prediction of unconditionally executed branch instructions A data processing system 2 includes an instruction pipeline with a branch prediction mechanism. The branch prediction mechanism includes a branch history register 20 operating to store a value GHV which can be used to identify whether a newly encountered branch instruction is one which has been previously encountered. If ... 05/04/06 - 20060095750 - Processes, circuits, devices, and systems for branch prediction and other processor improvements A processor (1700) for processing instructions has a pipeline (1710, 1736, 1740) including a fetch stage (1710) and an execute stage (1870), a first storing circuit (aGHR 2130) associated with said fetch stage (1710) and operable to store a history of actual branches, and a second storing circuit (wGHR 2140) ... 05/04/06 - 20060095749 - Branch prediction mechanism using a branch cache memory and an extended pattern cache A branch prediction mechanism includes a branch prediction memory 18 and an extended pattern cache 24. The extended pattern cache 24 detects predetermined repeating patterns of branch outcomes and stores a plurality of compressed representations of these such that when they recur their termination can be predicted. This enables program ... 05/04/06 - 20060095748 - Information processing apparatus, replacing method, and computer-readable recording medium on which a replacing program is recorded The present invention relates to an information processing apparatus predicting a branch destination of a branch instruction using a branch history register to realize effective replacement by enabling an unnecessary entry to be selected as an entry, which is an object of replacement, without using new resources in a full-associative ... 05/04/06 - 20060095747 - Branch prediction mechanism including a branch prediction memory and a branch prediction cache A data processing system 2 incorporating an instruction pipeline 14 and a prefetch unit 16 is provided with a branch prediction mechanism using both a branch prediction memory 20 storing 1-bit values indicating strongly taken or strongly not taken together with a branch prediction cache indicating for certain selected branch ... 02/02/06 - 20060026410 - Branch predicting apparatus and branch predicting method A return address in response to a return instruction corresponding to a call instruction is stored in a return address stack when a branch history detects presence of the call instruction. When the branch history detects the presence of the return instruction before a branch reservation station completes executing the ... 01/12/06 - 20060010311 - Methods and apparatus for updating of a branch history table Methods and apparatus are provided for enhanced instruction handling in processing environments. If branch misprediction occurs during instruction processing, a branch history table may be updated based upon the number of instructions to be fetched. The branch history table may be updated in accordance with a first mode if at ... 12/22/05 - 20050283593 - Loop end prediction A branch prediction mechanism within a pipelined processing apparatus uses a history value HV which records preceding branch outcomes in either a first mode or a second mode. In the first mode respective bits within the history value represent a mixture of branch taken and branch not taken outcomes. In ... 10/13/05 - 20050228977 - Branch prediction mechanism using multiple hash functions In one embodiment, the branch prediction mechanism includes a first storage including a first plurality of locations for storing a first set of partial prediction information. The branch prediction mechanism also includes a second storage including a second plurality of locations for storing a second set of partial prediction information. ... 09/29/05 - 20050216714 - Method and apparatus for predicting confidence and value A method and apparatus for making predictions which give a predicted value and also a confidence value is presented. In one embodiment, a global confidence history is maintained. The global confidence history may be hashed with an instruction pointer to form an index into a pattern history table or tables ... 07/07/05 - 20050149710 - Information processing device The information processing device of the present invention stores the branch history information of a fetched instruction. When branch prediction fails, BHR information used for the branch prediction is restored using this stored branch history information. Thus, even when branch prediction fails, BHR information can be accurately restored. Accordingly, prediction ... 06/02/05 - 20050120193 - Context look ahead storage structures A memory storage structure includes a memory storage device, and a first meta-structure having a first size and operating at a first speed. The first speed is faster than a second speed for storing meta-information based on information stored in a memory. A second meta-structure is hierarchically associated with the ... ### FreshPatents.com Support |