60 void llvm::ComputeMaskedBits(Value *V, const APInt &Mask,  in ComputeMaskedBits()  argument
65   unsigned BitWidth = Mask.getBitWidth();  in ComputeMaskedBits()
78     KnownOne = CI->getValue() & Mask;  in ComputeMaskedBits()
79     KnownZero = ~KnownOne & Mask;  in ComputeMaskedBits()
86     KnownZero = Mask;  in ComputeMaskedBits()
95       ComputeMaskedBits(CV->getOperand(i), Mask, KnownZero2, KnownOne2,  in ComputeMaskedBits()
116       KnownZero = Mask & APInt::getLowBitsSet(BitWidth,  in ComputeMaskedBits()
129       ComputeMaskedBits(GA->getAliasee(), Mask, KnownZero, KnownOne,  in ComputeMaskedBits()
139         KnownZero = Mask & APInt::getLowBitsSet(BitWidth,  in ComputeMaskedBits()
147   if (Depth == MaxDepth || Mask == 0)  in ComputeMaskedBits()
158     ComputeMaskedBits(I->getOperand(1), Mask, KnownZero, KnownOne, TD, Depth+1);  in ComputeMaskedBits()
159     APInt Mask2(Mask & ~KnownZero);  in ComputeMaskedBits()
172     ComputeMaskedBits(I->getOperand(1), Mask, KnownZero, KnownOne, TD, Depth+1);  in ComputeMaskedBits()
173     APInt Mask2(Mask & ~KnownOne);  in ComputeMaskedBits()
186     ComputeMaskedBits(I->getOperand(1), Mask, KnownZero, KnownOne, TD, Depth+1);  in ComputeMaskedBits()
187     ComputeMaskedBits(I->getOperand(0), Mask, KnownZero2, KnownOne2, TD,  in ComputeMaskedBits()
222     KnownZero &= Mask;  in ComputeMaskedBits()
243     KnownZero = APInt::getHighBitsSet(BitWidth, LeadZ) & Mask;  in ComputeMaskedBits()
247     ComputeMaskedBits(I->getOperand(2), Mask, KnownZero, KnownOne, TD, Depth+1);  in ComputeMaskedBits()
248     ComputeMaskedBits(I->getOperand(1), Mask, KnownZero2, KnownOne2, TD,  in ComputeMaskedBits()
281     APInt MaskIn = Mask.zextOrTrunc(SrcBitWidth);  in ComputeMaskedBits()
299       ComputeMaskedBits(I->getOperand(0), Mask, KnownZero, KnownOne, TD,  in ComputeMaskedBits()
309     APInt MaskIn = Mask.trunc(SrcBitWidth);  in ComputeMaskedBits()
330       APInt Mask2(Mask.lshr(ShiftAmt));  in ComputeMaskedBits()
347       APInt Mask2(Mask.shl(ShiftAmt));  in ComputeMaskedBits()
365       APInt Mask2(Mask.shl(ShiftAmt));  in ComputeMaskedBits()
398           KnownZero = APInt::getHighBitsSet(BitWidth, NLZ2) & Mask;  in ComputeMaskedBits()
411                                        BitWidth - Mask.countLeadingZeros());  in ComputeMaskedBits()
427         APInt Mask = APInt::getLowBitsSet(BitWidth, LHSKnownZeroOut);  in ComputeMaskedBits()  local
428         KnownZero |= KnownZero2 & Mask;  in ComputeMaskedBits()
429         KnownOne  |= KnownOne2 & Mask;  in ComputeMaskedBits()
438       APInt Mask = APInt::getLowBitsSet(BitWidth, RHSKnownZeroOut);  in ComputeMaskedBits()  local
439       KnownZero |= LHSKnownZero & Mask;  in ComputeMaskedBits()
440       KnownOne  |= LHSKnownOne & Mask;  in ComputeMaskedBits()
444     if (Mask.isNegative() && !KnownZero.isNegative() && !KnownOne.isNegative()){  in ComputeMaskedBits()
490         KnownZero &= Mask;  in ComputeMaskedBits()
491         KnownOne &= Mask;  in ComputeMaskedBits()
499     if (Mask.isNegative() && KnownZero.isNonNegative()) {  in ComputeMaskedBits()
515         APInt Mask2 = LowBits & Mask;  in ComputeMaskedBits()
516         KnownZero |= ~LowBits & Mask;  in ComputeMaskedBits()
535     KnownZero = APInt::getHighBitsSet(BitWidth, Leaders) & Mask;  in ComputeMaskedBits()
546       KnownZero = Mask & APInt::getLowBitsSet(BitWidth,  in ComputeMaskedBits()
586     KnownZero = APInt::getLowBitsSet(BitWidth, TrailZ) & Mask;  in ComputeMaskedBits()
630           KnownZero = Mask &  in ComputeMaskedBits()
835       APInt Mask = APInt::getSignedMaxValue(BitWidth);  in isKnownNonZero()  local
838       ComputeMaskedBits(X, Mask, KnownZero, KnownOne, TD, Depth);  in isKnownNonZero()
839       if ((KnownOne & Mask) != 0)  in isKnownNonZero()
843       ComputeMaskedBits(Y, Mask, KnownZero, KnownOne, TD, Depth);  in isKnownNonZero()
844       if ((KnownOne & Mask) != 0)  in isKnownNonZero()
878 bool llvm::MaskedValueIsZero(Value *V, const APInt &Mask,  in MaskedValueIsZero()  argument
880   APInt KnownZero(Mask.getBitWidth(), 0), KnownOne(Mask.getBitWidth(), 0);  in MaskedValueIsZero()
881   ComputeMaskedBits(V, Mask, KnownZero, KnownOne, TD, Depth);  in MaskedValueIsZero()
883   return (KnownZero & Mask) == Mask;  in MaskedValueIsZero()
974         APInt Mask = APInt::getAllOnesValue(TyBits);  in ComputeNumSignBits()  local
975         ComputeMaskedBits(U->getOperand(0), Mask, KnownZero, KnownOne, TD,  in ComputeNumSignBits()
980         if ((KnownZero | APInt(TyBits, 1)) == Mask)  in ComputeNumSignBits()
1001         APInt Mask = APInt::getAllOnesValue(TyBits);  in ComputeNumSignBits()  local
1002         ComputeMaskedBits(U->getOperand(1), Mask, KnownZero, KnownOne,   in ComputeNumSignBits()
1006         if ((KnownZero | APInt(TyBits, 1)) == Mask)  in ComputeNumSignBits()
1048   APInt Mask = APInt::getAllOnesValue(TyBits);  in ComputeNumSignBits()  local
1049   ComputeMaskedBits(V, Mask, KnownZero, KnownOne, TD, Depth);  in ComputeNumSignBits()
1052     Mask = KnownZero;  in ComputeNumSignBits()
1054     Mask = KnownOne;  in ComputeNumSignBits()
1062   Mask = ~Mask;  in ComputeNumSignBits()
1063   Mask <<= Mask.getBitWidth()-TyBits;  in ComputeNumSignBits()
1066   return std::max(FirstAnswer, std::min(TyBits, Mask.countLeadingZeros()));  in ComputeNumSignBits()