3632   enum { Unset = -1 };  enumerator
3705         if (A->Provenance[BitIdx] != BitPart::Unset &&  in collectBitParts()
3706             B->Provenance[BitIdx] != BitPart::Unset &&  in collectBitParts()
3710         if (A->Provenance[BitIdx] == BitPart::Unset)  in collectBitParts()
3741         P.insert(P.begin(), BitShift.getZExtValue(), BitPart::Unset);  in collectBitParts()
3744         P.insert(P.end(), BitShift.getZExtValue(), BitPart::Unset);  in collectBitParts()
3770           Result->Provenance[BitIdx] = BitPart::Unset;  in collectBitParts()
3786         Result->Provenance[BitIdx] = BitPart::Unset;  in collectBitParts()
3924                 [](int8_t I) { return I == BitPart::Unset || 0 <= I; }) &&  in recognizeBSwapOrBitReverseIdiom()
3929   if (BitProvenance.back() == BitPart::Unset) {  in recognizeBSwapOrBitReverseIdiom()
3930     while (!BitProvenance.empty() && BitProvenance.back() == BitPart::Unset)  in recognizeBSwapOrBitReverseIdiom()
3951     if (BitProvenance[BitIdx] == BitPart::Unset) {  in recognizeBSwapOrBitReverseIdiom()