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Lines Matching defs:KnownZero

9605     APInt KnownZero, KnownOne;
9606     DAG.computeKnownBits(SDValue(N,0), KnownZero, KnownOne);
9608     if (KnownZero == 0xfffffffe)
9611     else if (KnownZero == 0xffffff00)
9614     else if (KnownZero == 0xffff0000)
10194                                                       APInt &KnownZero,
10199   KnownZero = KnownOne = APInt(BitWidth, 0);
10209     KnownZero |= APInt::getHighBitsSet(BitWidth, BitWidth - 1);
10213     DAG.computeKnownBits(Op.getOperand(0), KnownZero, KnownOne, Depth+1);
10214     if (KnownZero == 0 && KnownOne == 0) return;
10218     KnownZero &= KnownZeroRHS;
10231       KnownZero |= APInt::getHighBitsSet(BitWidth, BitWidth - MemBits);