1995   APInt KnownZero, KnownOne;  in isBitfieldPositioningOp()  local
1996   CurDAG->computeKnownBits(Op, KnownZero, KnownOne);  in isBitfieldPositioningOp()
2000   uint64_t NonZeroBits = (~KnownZero).getZExtValue();  in isBitfieldPositioningOp()
2006     assert((~APInt(BitWidth, AndImm) & ~KnownZero) == 0);  in isBitfieldPositioningOp()
2075   APInt KnownZero, KnownOne;  in tryBitfieldInsertOpFromOrAndImm()  local
2076   CurDAG->computeKnownBits(And, KnownZero, KnownOne);  in tryBitfieldInsertOpFromOrAndImm()
2080   uint64_t NotKnownZero = (~KnownZero).getZExtValue();  in tryBitfieldInsertOpFromOrAndImm()
2083   if (!isShiftedMask(KnownZero.getZExtValue(), VT))  in tryBitfieldInsertOpFromOrAndImm()
2217     APInt KnownZero, KnownOne;  in tryBitfieldInsertOpFromOr()  local
2218     CurDAG->computeKnownBits(OrOpd1Val, KnownZero, KnownOne);  in tryBitfieldInsertOpFromOr()
2223         APInt::getBitsSet(KnownZero.getBitWidth(), DstLSB, DstLSB + Width);  in tryBitfieldInsertOpFromOr()
2225     if ((BitsToBeInserted & ~KnownZero) != 0)  in tryBitfieldInsertOpFromOr()