1356     SmallVectorImpl<MemoryAccess *> &VersionStack,  in optimizeUsesInBlock()  argument
1368         !VersionStack.empty() &&  in optimizeUsesInBlock()
1370     BasicBlock *BackBlock = VersionStack.back()->getBlock();  in optimizeUsesInBlock()
1373     while (VersionStack.back()->getBlock() == BackBlock)  in optimizeUsesInBlock()
1374       VersionStack.pop_back();  in optimizeUsesInBlock()
1381       VersionStack.push_back(&MA);  in optimizeUsesInBlock()
1414         LocInfo.LowerBoundBlock = VersionStack[0]->getBlock();  in optimizeUsesInBlock()
1425       LocInfo.LastKill = VersionStack.size() - 1;  in optimizeUsesInBlock()
1431     assert(LocInfo.LowerBound < VersionStack.size() &&  in optimizeUsesInBlock()
1433     assert(LocInfo.LastKill < VersionStack.size() &&  in optimizeUsesInBlock()
1436     unsigned long UpperBound = VersionStack.size() - 1;  in optimizeUsesInBlock()
1452       if (isa<MemoryPhi>(VersionStack[UpperBound])) {  in optimizeUsesInBlock()
1460         while (VersionStack[UpperBound] != Result) {  in optimizeUsesInBlock()
1468       MemoryDef *MD = cast<MemoryDef>(VersionStack[UpperBound]);  in optimizeUsesInBlock()
1479       MU->setDefiningAccess(VersionStack[UpperBound], true);  in optimizeUsesInBlock()
1484       MU->setDefiningAccess(VersionStack[LocInfo.LastKill], true);  in optimizeUsesInBlock()
1486     LocInfo.LowerBound = VersionStack.size() - 1;  in optimizeUsesInBlock()
1493   SmallVector<MemoryAccess *, 16> VersionStack;  in optimizeUses()  local
1495   VersionStack.push_back(MSSA->getLiveOnEntryDef());  in optimizeUses()
1501     optimizeUsesInBlock(DomNode->getBlock(), StackEpoch, PopEpoch, VersionStack,  in optimizeUses()