cpu/pred/multiperspective_perceptron_tage.cc

53 MPP_TAGE::handleTAGEUpdate(Addr branch_pc, bool taken,
58             if (bi->longestMatchPred != taken) {
61                     ctrUpdate(gtable[bi->altBank][bi->altBankIndex].ctr, taken,
65                     baseUpdate(branch_pc, taken, bi);
70         ctrUpdate(gtable[bi->hitBank][bi->hitBankIndex].ctr, taken,
78         baseUpdate(branch_pc, taken, bi);
82         (bi->longestMatchPred == taken) &&
89 MPP_TAGE::handleAllocAndUReset(bool alloc, bool taken,
111                 gtable[i][bi->tableIndices[i]].ctr = taken ? 0 : -1;
178 MPP_TAGE::adjustAlloc(bool & alloc, bool taken, bool pred_taken)
181     if ((taken == pred_taken) && ((random_mt.random<int>() & 31) != 0)) {
188     ThreadID tid, Addr branch_pc, bool taken, TAGEBase::BranchInfo* b,
203     updatePathAndGlobalHistory(tHist, brtype, taken, branch_pc, target);
208     ThreadHistory& tHist, int brtype, bool taken, Addr branch_pc, Addr target)
211     int tmp = (branch_pc << 1) + taken;
333 MPP_StatisticalCorrector::gUpdate(Addr branch_pc, bool taken, int64_t hist,
343         ctrUpdate(tab[i][index], taken, scCountersWidth - (i < (nbr - 1)));
449                                               bool taken)
458         if (taken) {
473                                                 bool taken)
483     threadData[tid]->updateAcyclic(taken, hpc);
504             threadData[tid]->mod_histories[i][0] = taken;
560         bool taken, StatisticalCorrector::BranchInfo *bi, Addr corrTarget,
569                     ctrUpdate(firstH, (bi->predBeforeSC == taken),
572                     ctrUpdate(secondH, (bi->predBeforeSC == taken),
575                     ctrUpdate(thirdH, (bi->predBeforeSC == taken),
582     if ((scPred != taken) || ((abs(bi->lsum) < bi->thres))) {
584         ctrUpdate(pUpdateThreshold[getIndUpd(branch_pc)], (scPred != taken),
592         ctrUpdate(bias[indBias], taken, scCountersWidth);
593         ctrUpdate(biasSK[indBiasSK], taken, scCountersWidth);
595         gUpdates(tid, branch_pc, taken, bi, phist);
600 MultiperspectivePerceptronTAGE::update(ThreadID tid, Addr instPC, bool taken,
614             tage->squash(tid, taken, bi->tageBranchInfo, corrTarget);
623         statisticalCorrector->scHistoryUpdate(instPC, inst, taken,
625         tage->updateHistories(tid, instPC, taken, bi->tageBranchInfo, false,
628         tage->updateStats(taken, bi->tageBranchInfo);
629         loopPredictor->updateStats(taken, bi->lpBranchInfo);
630         statisticalCorrector->updateStats(taken, bi->scBranchInfo);
632         loopPredictor->condBranchUpdate(tid, instPC, taken,
636         if ((scPred != taken) ||
638             updatePartial(tid, *bi, taken);
640         statisticalCorrector->condBranchUpdate(tid, instPC, taken,
645         tage->condBranchUpdate(tid, instPC, taken, bi->tageBranchInfo,
649         updateHistories(tid, *bi, taken);
657                     if (!taken) {
663                     if (taken) {
671             statisticalCorrector->scHistoryUpdate(instPC, inst, taken,
674             tage->updateHistories(tid, instPC, taken, bi->tageBranchInfo,