2119   APInt KnownZero, KnownOne;  in isU24()  local
2121   DAG.computeKnownBits(Op, KnownZero, KnownOne);  in isU24()
2123   return (VT.getSizeInBits() - KnownZero.countLeadingOnes()) <= 24;  in isU24()
2143   APInt KnownZero, KnownOne;  in simplifyI24()  local
2145   if (TLI.SimplifyDemandedBits(Op, Demanded, KnownZero, KnownOne, TLO))  in simplifyI24()
2708       APInt KnownZero, KnownOne;  in PerformDAGCombine()  local
2714                                    KnownZero, KnownOne, TLO)) {  in PerformDAGCombine()
2919   APInt &KnownZero,  in computeKnownBitsForTargetNode()  argument
2924   KnownZero = KnownOne = APInt(KnownOne.getBitWidth(), 0); // Don't know anything.  in computeKnownBitsForTargetNode()
2935     KnownZero = APInt::getHighBitsSet(32, 31);  in computeKnownBitsForTargetNode()
2949       KnownZero = APInt::getHighBitsSet(BitWidth, BitWidth - Width);  in computeKnownBitsForTargetNode()