Patent · US Active

Speculative branch handling for transaction abort

US9792124B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Michael Billeci · Poughkeepsie, US
James J. Bonanno · Wappingers Falls, US
Adam B. Collura · Hopewell Junction, US
Christian Jacobi · West Park, US
Anthony Saporito · Highland, US
Timothy J. Slegel · Staatsburg, US

Key dates

Filing date	Feb 13, 2015
Grant date	Oct 17, 2017
Priority date	—
Expiry date	Nov 13, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG06F9/467
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Embodiments relate to speculative branch handling for transaction abort. An aspect includes detecting a beginning of a current execution of a transaction. Another aspect includes, based on detecting the beginning of the transaction, disabling speculative execution based on branch prediction of an initial branch instruction of the transaction, wherein the initial branch instruction branches to two possible paths, and wherein a first path of the two possible paths comprises an abort handler. Another aspect includes disabling updating of a history table for the initial branch instruction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.