279     /// other than BValNo val# that can reach uses of AValno val# of IntA.
280     bool hasOtherReachingDefs(LiveInterval &IntA, LiveInterval &IntB,
620   LiveInterval &IntA =  in adjustCopiesBackFrom()  local
626   // We have a non-trivially-coalescable copy with IntA being the source and  in adjustCopiesBackFrom()
628   // source value number (in IntA) is defined by a copy from B, see if we can  in adjustCopiesBackFrom()
653   LiveInterval::iterator AS = IntA.FindSegmentContaining(CopyUseIdx);  in adjustCopiesBackFrom()
655   if (AS == IntA.end()) return false;  in adjustCopiesBackFrom()
733   CopyMI->substituteRegister(IntA.reg(), IntB.reg(), 0, *TRI);  in adjustCopiesBackFrom()
738     for (LiveInterval::SubRange &S : IntA.subranges()) {  in adjustCopiesBackFrom()
747     shrinkToUses(&IntA);  in adjustCopiesBackFrom()
753 bool RegisterCoalescer::hasOtherReachingDefs(LiveInterval &IntA,  in hasOtherReachingDefs()  argument
759   if (LIS->hasPHIKill(IntA, AValNo))  in hasOtherReachingDefs()
762   for (LiveRange::Segment &ASeg : IntA.segments) {  in hasOtherReachingDefs()
809   LiveInterval &IntA =  in removeCopyByCommutingDef()  local
814   // We found a non-trivially-coalescable copy with IntA being the source and  in removeCopyByCommutingDef()
816   // source value number (in IntA) is defined by a commutable instruction and  in removeCopyByCommutingDef()
841   VNInfo *AValNo = IntA.getVNInfoAt(CopyIdx.getRegSlot(true));  in removeCopyByCommutingDef()
852   int DefIdx = DefMI->findRegisterDefOperandIdx(IntA.reg(), /*TRI=*/nullptr);  in removeCopyByCommutingDef()
878   if (hasOtherReachingDefs(IntA, IntB, AValNo, BValNo))  in removeCopyByCommutingDef()
881   // If some of the uses of IntA.reg is already coalesced away, return false.  in removeCopyByCommutingDef()
883   for (MachineOperand &MO : MRI->use_nodbg_operands(IntA.reg())) {  in removeCopyByCommutingDef()
887     LiveInterval::iterator US = IntA.FindSegmentContaining(UseIdx);  in removeCopyByCommutingDef()
888     if (US == IntA.end() || US->valno != AValNo)  in removeCopyByCommutingDef()
905   if (IntA.reg().isVirtual() && IntB.reg().isVirtual() &&  in removeCopyByCommutingDef()
906       !MRI->constrainRegClass(IntB.reg(), MRI->getRegClass(IntA.reg())))  in removeCopyByCommutingDef()
924   // Update uses of IntA of the specific Val# with IntB.  in removeCopyByCommutingDef()
926        llvm::make_early_inc_range(MRI->use_operands(IntA.reg()))) {  in removeCopyByCommutingDef()
937     LiveInterval::iterator US = IntA.FindSegmentContaining(UseIdx);  in removeCopyByCommutingDef()
938     assert(US != IntA.end() && "Use must be live");  in removeCopyByCommutingDef()
976   // Extend BValNo by merging in IntA live segments of AValNo. Val# definition  in removeCopyByCommutingDef()
980   if (IntA.hasSubRanges() || IntB.hasSubRanges()) {  in removeCopyByCommutingDef()
981     if (!IntA.hasSubRanges()) {  in removeCopyByCommutingDef()
982       LaneBitmask Mask = MRI->getMaxLaneMaskForVReg(IntA.reg());  in removeCopyByCommutingDef()
983       IntA.createSubRangeFrom(Allocator, Mask, IntA);  in removeCopyByCommutingDef()
991     for (LiveInterval::SubRange &SA : IntA.subranges()) {  in removeCopyByCommutingDef()
1017     // Go over all subranges of IntB that have not been covered by IntA,  in removeCopyByCommutingDef()
1019     // IntA has undef lanes that are defined in IntB.  in removeCopyByCommutingDef()
1030   auto P = addSegmentsWithValNo(IntB, BValNo, IntA, AValNo);  in removeCopyByCommutingDef()
1034   LIS->removeVRegDefAt(IntA, AValNo->def);  in removeCopyByCommutingDef()
1036   LLVM_DEBUG(dbgs() << "\t\ttrimmed:  " << IntA << '\n');  in removeCopyByCommutingDef()
1103   LiveInterval &IntA =  in removePartialRedundancy()  local
1110   VNInfo *AValNo = IntA.getVNInfoAt(CopyIdx);  in removePartialRedundancy()
1124     VNInfo *PVal = IntA.getVNInfoBefore(LIS->getMBBEndIdx(Pred));  in removePartialRedundancy()
1131     if (DefMI->getOperand(0).getReg() != IntA.reg() ||  in removePartialRedundancy()
1161   // reverse copy, CopyMI can be removed trivially if only IntA/IntB is updated.  in removePartialRedundancy()
1163   // update IntA/IntB.  in removePartialRedundancy()
1190                                   .addReg(IntA.reg());  in removePartialRedundancy()
1266   // Finally, update the live-range of IntA.  in removePartialRedundancy()
1267   shrinkToUses(&IntA);  in removePartialRedundancy()