6461   auto KnownStart = computeKnownBits(Start, DL, 0, &AC, nullptr, &DT);  in getRangeForUnknownRecurrence()  local
6463   assert(KnownStart.getBitWidth() == BitWidth &&  in getRangeForUnknownRecurrence()
6483     auto KnownEnd = KnownBits::ashr(KnownStart,  in getRangeForUnknownRecurrence()
6485     if (KnownStart.isNonNegative())  in getRangeForUnknownRecurrence()
6488                                         KnownStart.getMaxValue() + 1);  in getRangeForUnknownRecurrence()
6489     if (KnownStart.isNegative())  in getRangeForUnknownRecurrence()
6491       return ConstantRange::getNonEmpty(KnownStart.getMinValue(),  in getRangeForUnknownRecurrence()
6501     auto KnownEnd = KnownBits::lshr(KnownStart,  in getRangeForUnknownRecurrence()
6504                                       KnownStart.getMaxValue() + 1);  in getRangeForUnknownRecurrence()
6508     auto KnownEnd = KnownBits::shl(KnownStart,  in getRangeForUnknownRecurrence()
6510     if (TotalShift.ult(KnownStart.countMinLeadingZeros()))  in getRangeForUnknownRecurrence()
6511       return ConstantRange(KnownStart.getMinValue(),  in getRangeForUnknownRecurrence()