EP 4081899 A1 20221102 - CONTROLLING ACCESSES TO A BRANCH PREDICTION UNIT FOR SEQUENCES OF FETCH GROUPS
Title (en)
CONTROLLING ACCESSES TO A BRANCH PREDICTION UNIT FOR SEQUENCES OF FETCH GROUPS
Title (de)
STEUERUNG VON ZUGRIFFEN AUF EINE VERZWEIGUNGSVORHERSAGEEINHEIT FÜR SEQUENZEN VON ABRUFGRUPPEN
Title (fr)
COMMANDE D'ACCÈS À UNE UNITÉ DE PRÉDICTION DE BRANCHEMENT DESTINÉE À DES SÉQUENCES DE GROUPES D'EXTRACTION
Publication
Application
Priority
- US 201916725203 A 20191223
- US 2020058806 W 20201104
Abstract (en)
[origin: WO2021133469A1] An electronic device handles accesses of a branch prediction functional block when executing instructions in program code. The electronic device includes a processor having the branch prediction functional block that provides branch prediction information for control transfer instructions (CTIs) in the program code and a minimum predictor use (MPU) functional block. The MPU functional block determines, based on a record associated with a given fetch group of instructions, that a specified number of subsequent fetch groups of instructions that were previously determined to include no CTIs or conditional CTIs that were not taken are to be fetched for execution in sequence following the given fetch group. The MPU functional block then, when each of the specified number of the subsequent fetch groups is fetched and prepared for execution, prevents corresponding accesses of the branch prediction functional block for acquiring branch prediction information for instructions in that subsequent fetch group.
IPC 8 full level
G06F 9/38 (2018.01)
CPC (source: EP KR)
G06F 9/3806 (2013.01 - EP KR); G06F 9/3844 (2013.01 - EP KR); G06F 9/3858 (2023.08 - EP KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021133469 A1 20210701; CN 114846443 A 20220802; EP 4081899 A1 20221102; EP 4081899 A4 20240306; JP 2023508869 A 20230306; KR 20220113410 A 20220812
DOCDB simple family (application)
US 2020058806 W 20201104; CN 202080089165 A 20201104; EP 20905906 A 20201104; JP 2022537373 A 20201104; KR 20227021490 A 20201104