Patents Assigned to Ericsson Moderns SA
  • Publication number: 20140229719
    Abstract: A branch prediction unit BPU (500) for prediction of a next taken branch instruction in a processing unit (100). The BPU (500) comprises a pattern history memory (504) comprising branch source addresses and branch indicators; a branch target buffer (506) comprising branch targets; and branch prediction logical circuit (502). By means of a search PC, the circuit finds in the memory a branch indicator indicating a predicted taken branch instruction. The circuit selects a first found branch indicator as an indication of a first predicted taken branch instruction. Using the first found branch indicator, the circuit retrieves from the memory, a branch source address of the first predicted taken branch instruction. When the retrieved branch source address is the branch source address nearest to the search PC, the circuit outputs as next PC a branch target retrieved from the buffer. Then the prediction stops.
    Type: Application
    Filed: July 16, 2012
    Publication date: August 14, 2014
    Applicant: Ericsson Moderns SA
    Inventors: Jean-Paul Smeets, Erik Rijshouwer