659   if (RI.Tied) {  in reMaterializeFor()
661     LLVM_DEBUG(dbgs() << "\tcannot remat tied reg: " << UseIdx << '\t' << MI);  in reMaterializeFor()
916   // TargetInstrInfo::foldMemoryOperand only expects explicit, non-tied  in foldMemoryOperand()
926     // TODO: Is this really the correct way to handle undef tied uses?  in foldMemoryOperand()
940     // Tied use operands should not be passed to foldMemoryOperand.  in foldMemoryOperand()
958       unsigned Tied = MI->findTiedOperandIdx(Idx);  in foldMemoryOperand()  local
960         TiedOps.emplace_back(Tied, Idx);  in foldMemoryOperand()
962         assert(MO.isDef() && "Tied to not use and def?");  in foldMemoryOperand()
963         TiedOps.emplace_back(Idx, Tied);  in foldMemoryOperand()
973     for (auto Tied : TiedOps)  in foldMemoryOperand()  local
974       MI->tieOperands(Tied.first, Tied.second);  in foldMemoryOperand()
1010   // the destination operand is also a tied def. More values could be  in foldMemoryOperand()
1175     // This is usually the def slot, except for tied early clobbers.  in spillAroundUses()
1231     // FIXME: Use a second vreg if instruction has no tied ops.  in spillAroundUses()