cpu/pred/tage_sc_l.cc

129     ThreadID tid, Addr pc, TAGEBase::BranchInfo* bi)
140         bi->tableTags[i] = tableTags[i];
141         bi->tableTags[i+1] = tableTags[i+1];
151             bi->tableIndices[i] = tableIndices[i];
163             bi->tableIndices[i] = tableIndices[i];
171 TAGE_SC_L_TAGE::getUseAltIdx(TAGEBase::BranchInfo* bi, Addr branch_pc)
173     BranchInfo *tbi = static_cast<BranchInfo *>(bi);
175     idx = ((((bi->hitBank-1)/8)<<1)+tbi->altConf) % (numUseAltOnNa-1);
289 TAGE_SC_L_TAGE::squash(ThreadID tid, bool taken, TAGEBase::BranchInfo *bi,
305 TAGE_SC_L_TAGE::calcDep(TAGEBase::BranchInfo* bi)
311     return ((((bi->hitBank - 1 + 2 * a) & 0xffe)) ^
342     TAGE_SC_L_TAGE::BranchInfo *bi =
345     int bim = (btablePrediction[bi->bimodalIndex] << 1)
346         + btableHysteresis[bi->bimodalIndex >> logRatioBiModalHystEntries];
348     bi->highConf = (bim == 0) || (bim == 3);
349     bi->lowConf = ! bi->highConf;
350     bi->altConf = bi->highConf;
351     bi->medConf = false;
356 TAGE_SC_L_TAGE::extraAltCalc(TAGEBase::BranchInfo* bi)
359         static_cast<TAGE_SC_L_TAGE::BranchInfo *>(bi);
360     int8_t ctr = gtable[bi->altBank][bi->altBankIndex].ctr;
367     TageSCLBranchInfo *bi = new TageSCLBranchInfo(*tage,
370     b = (void*)(bi);
373                                         bi->tageBranchInfo);
375                                             bi->lpBranchInfo, pred_taken,
378     if (bi->lpBranchInfo->loopPredUsed) {
379         bi->tageBranchInfo->provider = LOOP;
383         static_cast<TAGE_SC_L_TAGE::BranchInfo *>(bi->tageBranchInfo);
386     bi->scBranchInfo->lowConf = tage_scl_bi->lowConf;
387     bi->scBranchInfo->highConf = tage_scl_bi->highConf;
388     bi->scBranchInfo->altConf = tage_scl_bi->altConf;
389     bi->scBranchInfo->medConf = tage_scl_bi->medConf;
391     bool use_tage_ctr = bi->tageBranchInfo->hitBank > 0;
394     bool bias = (bi->tageBranchInfo->longestMatchPred !=
395                  bi->tageBranchInfo->altTaken);
398             bi->scBranchInfo, pred_taken, bias, use_tage_ctr, tage_ctr,
399             tage->getTageCtrBits(), bi->tageBranchInfo->hitBank,
400             bi->tageBranchInfo->altBank, tage->getPathHist(tid));
402     if (bi->scBranchInfo->usedScPred) {
403         bi->tageBranchInfo->provider = SC;
407     bi->lpBranchInfo->predTaken = pred_taken;
418     TageSCLBranchInfo* bi = static_cast<TageSCLBranchInfo*>(bp_history);
420         static_cast<TAGE_SC_L_TAGE::BranchInfo *>(bi->tageBranchInfo);
429             if (bi->tageBranchInfo->condBranch) {
430                 loopPredictor->squashLoop(bi->lpBranchInfo);
440         tage->updateStats(taken, bi->tageBranchInfo);
442         loopPredictor->updateStats(taken, bi->lpBranchInfo);
444         statisticalCorrector->updateStats(taken, bi->scBranchInfo);
446         bool bias = (bi->tageBranchInfo->longestMatchPred !=
447                      bi->tageBranchInfo->altTaken);
449             bi->scBranchInfo, corrTarget, bias, bi->tageBranchInfo->hitBank,
450             bi->tageBranchInfo->altBank, tage->getPathHist(tid));
453                 bi->tageBranchInfo->tagePred, bi->lpBranchInfo, instShiftAmt);
455         tage->condBranchUpdate(tid, branch_pc, taken, bi->tageBranchInfo,
456                                nrand, corrTarget, bi->lpBranchInfo->predTaken);
461                                               bi->scBranchInfo, corrTarget);
463         tage->updateHistories(tid, branch_pc, taken, bi->tageBranchInfo, false,
467     delete bi;