3928     ConstantSDNode *CstLow = nullptr, *CstHigh = nullptr;  in computeKnownBits()  local
3931         CstHigh =  in computeKnownBits()
3933     if (CstLow && CstHigh) {  in computeKnownBits()
3935         std::swap(CstLow, CstHigh);  in computeKnownBits()
3938       const APInt &ValueHigh = CstHigh->getAPIntValue();  in computeKnownBits()
4478     ConstantSDNode *CstLow = nullptr, *CstHigh = nullptr;  in ComputeNumSignBits()  local
4481         CstHigh =  in ComputeNumSignBits()
4483     if (CstLow && CstHigh) {  in ComputeNumSignBits()
4485         std::swap(CstLow, CstHigh);  in ComputeNumSignBits()
4486       if (CstLow->getAPIntValue().sle(CstHigh->getAPIntValue())) {  in ComputeNumSignBits()
4488         Tmp2 = CstHigh->getAPIntValue().getNumSignBits();  in ComputeNumSignBits()