778     auto MaybeCst = ConstantFoldBinOp(Opcode, SrcVec1->getSourceReg(Idx),  in ConstantFoldVectorBinop()  local
780     if (!MaybeCst)  in ConstantFoldVectorBinop()
782     FoldedElements.push_back(*MaybeCst);  in ConstantFoldVectorBinop()
971     auto MaybeCst = getIConstantVRegVal(R, MRI);  in ConstantFoldCTLZ()  local
972     if (!MaybeCst)  in ConstantFoldCTLZ()
974     return MaybeCst->countl_zero();  in ConstantFoldCTLZ()
990   if (auto MaybeCst = tryFoldScalar(Src)) {  in ConstantFoldCTLZ()  local
991     FoldedCTLZs.emplace_back(*MaybeCst);  in ConstantFoldCTLZ()
1391   auto MaybeCst = getIConstantSplatSExtVal(MI, MRI);  in isConstantOrConstantSplatVector()  local
1392   if (!MaybeCst)  in isConstantOrConstantSplatVector()
1395   return APInt(ScalarSize, *MaybeCst, true);  in isConstantOrConstantSplatVector()