215     BlockInfo BI;  in calcLiveBlockInfo()  local
216     BI.MBB = &*MFI;  in calcLiveBlockInfo()
218     std::tie(Start, Stop) = LIS.getSlotIndexes()->getMBBRange(BI.MBB);  in calcLiveBlockInfo()
225       ThroughBlocks.set(BI.MBB->getNumber());  in calcLiveBlockInfo()
231       BI.FirstInstr = *UseI;  in calcLiveBlockInfo()
232       assert(BI.FirstInstr >= Start);  in calcLiveBlockInfo()
235       BI.LastInstr = UseI[-1];  in calcLiveBlockInfo()
236       assert(BI.LastInstr < Stop);  in calcLiveBlockInfo()
239       BI.LiveIn = LVI->start <= Start;  in calcLiveBlockInfo()
242       if (!BI.LiveIn) {  in calcLiveBlockInfo()
244         assert(LVI->start == BI.FirstInstr && "First instr should be a def");  in calcLiveBlockInfo()
245         BI.FirstDef = BI.FirstInstr;  in calcLiveBlockInfo()
249       BI.LiveOut = true;  in calcLiveBlockInfo()
253           BI.LiveOut = false;  in calcLiveBlockInfo()
254           BI.LastInstr = LastStop;  in calcLiveBlockInfo()
264           BI.LiveOut = false;  in calcLiveBlockInfo()
265           UseBlocks.push_back(BI);  in calcLiveBlockInfo()
269           BI.LiveIn = false;  in calcLiveBlockInfo()
270           BI.LiveOut = true;  in calcLiveBlockInfo()
271           BI.FirstInstr = BI.FirstDef = LVI->start;  in calcLiveBlockInfo()
276         if (!BI.FirstDef)  in calcLiveBlockInfo()
277           BI.FirstDef = LVI->start;  in calcLiveBlockInfo()
280       UseBlocks.push_back(BI);  in calcLiveBlockInfo()
1576 bool SplitAnalysis::shouldSplitSingleBlock(const BlockInfo &BI,  in shouldSplitSingleBlock()  argument
1579   if (!BI.isOneInstr())  in shouldSplitSingleBlock()
1585   if (BI.LiveIn && BI.LiveOut)  in shouldSplitSingleBlock()
1588   if (LIS.getInstructionFromIndex(BI.FirstInstr)->isCopyLike())  in shouldSplitSingleBlock()
1591   return isOriginalEndpoint(BI.FirstInstr);  in shouldSplitSingleBlock()
1594 void SplitEditor::splitSingleBlock(const SplitAnalysis::BlockInfo &BI) {  in splitSingleBlock()  argument
1596   SlotIndex LastSplitPoint = SA.getLastSplitPoint(BI.MBB);  in splitSingleBlock()
1597   SlotIndex SegStart = enterIntvBefore(std::min(BI.FirstInstr,  in splitSingleBlock()
1599   if (!BI.LiveOut || BI.LastInstr < LastSplitPoint) {  in splitSingleBlock()
1600     useIntv(SegStart, leaveIntvAfter(BI.LastInstr));  in splitSingleBlock()
1605     overlapIntv(SegStop, BI.LastInstr);  in splitSingleBlock()
1723 void SplitEditor::splitRegInBlock(const SplitAnalysis::BlockInfo &BI,  in splitRegInBlock()  argument
1726   std::tie(Start, Stop) = LIS.getSlotIndexes()->getMBBRange(BI.MBB);  in splitRegInBlock()
1728   LLVM_DEBUG(dbgs() << printMBBReference(*BI.MBB) << " [" << Start << ';'  in splitRegInBlock()
1729                     << Stop << "), uses " << BI.FirstInstr << '-'  in splitRegInBlock()
1730                     << BI.LastInstr << ", reg-in " << IntvIn  in splitRegInBlock()
1732                     << (BI.LiveOut ? ", stack-out" : ", killed in block"));  in splitRegInBlock()
1735   assert(BI.LiveIn && "Must be live-in");  in splitRegInBlock()
1738   if (!BI.LiveOut && (!LeaveBefore || LeaveBefore >= BI.LastInstr)) {  in splitRegInBlock()
1746     useIntv(Start, BI.LastInstr);  in splitRegInBlock()
1750   SlotIndex LSP = SA.getLastSplitPoint(BI.MBB);  in splitRegInBlock()
1752   if (!LeaveBefore || LeaveBefore > BI.LastInstr.getBoundaryIndex()) {  in splitRegInBlock()
1763     if (BI.LastInstr < LSP) {  in splitRegInBlock()
1766       SlotIndex Idx = leaveIntvAfter(BI.LastInstr);  in splitRegInBlock()
1773       overlapIntv(Idx, BI.LastInstr);  in splitRegInBlock()
1787   if (!BI.LiveOut || BI.LastInstr < LSP) {  in splitRegInBlock()
1793     SlotIndex To = leaveIntvAfter(BI.LastInstr);  in splitRegInBlock()
1808   overlapIntv(To, BI.LastInstr);  in splitRegInBlock()
1816 void SplitEditor::splitRegOutBlock(const SplitAnalysis::BlockInfo &BI,  in splitRegOutBlock()  argument
1819   std::tie(Start, Stop) = LIS.getSlotIndexes()->getMBBRange(BI.MBB);  in splitRegOutBlock()
1821   LLVM_DEBUG(dbgs() << printMBBReference(*BI.MBB) << " [" << Start << ';'  in splitRegOutBlock()
1822                     << Stop << "), uses " << BI.FirstInstr << '-'  in splitRegOutBlock()
1823                     << BI.LastInstr << ", reg-out " << IntvOut  in splitRegOutBlock()
1825                     << (BI.LiveIn ? ", stack-in" : ", defined in block"));  in splitRegOutBlock()
1827   SlotIndex LSP = SA.getLastSplitPoint(BI.MBB);  in splitRegOutBlock()
1830   assert(BI.LiveOut && "Must be live-out");  in splitRegOutBlock()
1833   if (!BI.LiveIn && (!EnterAfter || EnterAfter <= BI.FirstInstr)) {  in splitRegOutBlock()
1841     useIntv(BI.FirstInstr, Stop);  in splitRegOutBlock()
1845   if (!EnterAfter || EnterAfter < BI.FirstInstr.getBaseIndex()) {  in splitRegOutBlock()
1853     SlotIndex Idx = enterIntvBefore(std::min(LSP, BI.FirstInstr));  in splitRegOutBlock()
1874   SlotIndex From = enterIntvBefore(std::min(Idx, BI.FirstInstr));  in splitRegOutBlock()