1366     auto &LocInfo = LocStackInfo[UseMLOC];  in optimizeUsesInBlock()  local
1370     if (LocInfo.PopEpoch != PopEpoch) {  in optimizeUsesInBlock()
1371       LocInfo.PopEpoch = PopEpoch;  in optimizeUsesInBlock()
1372       LocInfo.StackEpoch = StackEpoch;  in optimizeUsesInBlock()
1384       if (LocInfo.LowerBoundBlock && LocInfo.LowerBoundBlock != BB &&  in optimizeUsesInBlock()
1385           !DT->dominates(LocInfo.LowerBoundBlock, BB)) {  in optimizeUsesInBlock()
1389         LocInfo.LowerBound = 0;  in optimizeUsesInBlock()
1390         LocInfo.LowerBoundBlock = VersionStack[0]->getBlock();  in optimizeUsesInBlock()
1391         LocInfo.LastKillValid = false;  in optimizeUsesInBlock()
1393     } else if (LocInfo.StackEpoch != StackEpoch) {  in optimizeUsesInBlock()
1397       LocInfo.PopEpoch = PopEpoch;  in optimizeUsesInBlock()
1398       LocInfo.StackEpoch = StackEpoch;  in optimizeUsesInBlock()
1400     if (!LocInfo.LastKillValid) {  in optimizeUsesInBlock()
1401       LocInfo.LastKill = VersionStack.size() - 1;  in optimizeUsesInBlock()
1402       LocInfo.LastKillValid = true;  in optimizeUsesInBlock()
1407     assert(LocInfo.LowerBound < VersionStack.size() &&  in optimizeUsesInBlock()
1409     assert(LocInfo.LastKill < VersionStack.size() &&  in optimizeUsesInBlock()
1414     if (UpperBound - LocInfo.LowerBound > MaxCheckLimit) {  in optimizeUsesInBlock()
1418                         << UpperBound - LocInfo.LowerBound  in optimizeUsesInBlock()
1422       LocInfo.LastKillValid = false;  in optimizeUsesInBlock()
1427     while (UpperBound > LocInfo.LowerBound) {  in optimizeUsesInBlock()
1454     if (FoundClobberResult || UpperBound < LocInfo.LastKill) {  in optimizeUsesInBlock()
1456       LocInfo.LastKill = UpperBound;  in optimizeUsesInBlock()
1460       MU->setDefiningAccess(VersionStack[LocInfo.LastKill], true);  in optimizeUsesInBlock()
1462     LocInfo.LowerBound = VersionStack.size() - 1;  in optimizeUsesInBlock()
1463     LocInfo.LowerBoundBlock = BB;  in optimizeUsesInBlock()