68   APInt DemandedMask(APInt::getAllOnesValue(BitWidth));  in SimplifyDemandedInstructionBits()  local
70   Value *V = SimplifyDemandedUseBits(&Inst, DemandedMask, Known,  in SimplifyDemandedInstructionBits()
82                                         const APInt &DemandedMask,  in SimplifyDemandedBits()  argument
86   Value *NewVal = SimplifyDemandedUseBits(U.get(), DemandedMask, Known,  in SimplifyDemandedBits()
117 Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask,  in SimplifyDemandedUseBits()  argument
122   uint32_t BitWidth = DemandedMask.getBitWidth();  in SimplifyDemandedUseBits()
135   if (DemandedMask.isNullValue())     // Not demanding any bits from V.  in SimplifyDemandedUseBits()
151     return SimplifyMultipleUseDemandedBits(I, DemandedMask, Known, Depth, CxtI);  in SimplifyDemandedUseBits()
160     DemandedMask.setAllBits();  in SimplifyDemandedUseBits()
168     if (SimplifyDemandedBits(I, 1, DemandedMask, RHSKnown, Depth + 1) ||  in SimplifyDemandedUseBits()
169         SimplifyDemandedBits(I, 0, DemandedMask & ~RHSKnown.Zero, LHSKnown,  in SimplifyDemandedUseBits()
182     if (DemandedMask.isSubsetOf(IKnownZero|IKnownOne))  in SimplifyDemandedUseBits()
187     if (DemandedMask.isSubsetOf(LHSKnown.Zero | RHSKnown.One))  in SimplifyDemandedUseBits()
189     if (DemandedMask.isSubsetOf(RHSKnown.Zero | LHSKnown.One))  in SimplifyDemandedUseBits()
193     if (ShrinkDemandedConstant(I, 1, DemandedMask & ~LHSKnown.Zero))  in SimplifyDemandedUseBits()
202     if (SimplifyDemandedBits(I, 1, DemandedMask, RHSKnown, Depth + 1) ||  in SimplifyDemandedUseBits()
203         SimplifyDemandedBits(I, 0, DemandedMask & ~RHSKnown.One, LHSKnown,  in SimplifyDemandedUseBits()
216     if (DemandedMask.isSubsetOf(IKnownZero|IKnownOne))  in SimplifyDemandedUseBits()
221     if (DemandedMask.isSubsetOf(LHSKnown.One | RHSKnown.Zero))  in SimplifyDemandedUseBits()
223     if (DemandedMask.isSubsetOf(RHSKnown.One | LHSKnown.Zero))  in SimplifyDemandedUseBits()
227     if (ShrinkDemandedConstant(I, 1, DemandedMask))  in SimplifyDemandedUseBits()
235     if (SimplifyDemandedBits(I, 1, DemandedMask, RHSKnown, Depth + 1) ||  in SimplifyDemandedUseBits()
236         SimplifyDemandedBits(I, 0, DemandedMask, LHSKnown, Depth + 1))  in SimplifyDemandedUseBits()
250     if (DemandedMask.isSubsetOf(IKnownZero|IKnownOne))  in SimplifyDemandedUseBits()
255     if (DemandedMask.isSubsetOf(RHSKnown.Zero))  in SimplifyDemandedUseBits()
257     if (DemandedMask.isSubsetOf(LHSKnown.Zero))  in SimplifyDemandedUseBits()
263     if (DemandedMask.isSubsetOf(RHSKnown.Zero | LHSKnown.Zero)) {  in SimplifyDemandedUseBits()
274     if (DemandedMask.isSubsetOf(RHSKnown.Zero|RHSKnown.One) &&  in SimplifyDemandedUseBits()
277                                                  ~RHSKnown.One & DemandedMask);  in SimplifyDemandedUseBits()
284     if (ShrinkDemandedConstant(I, 1, DemandedMask))  in SimplifyDemandedUseBits()
295           (LHSKnown.One & RHSKnown.One & DemandedMask) != 0) {  in SimplifyDemandedUseBits()
298         APInt NewMask = ~(LHSKnown.One & RHSKnown.One & DemandedMask);  in SimplifyDemandedUseBits()
325       unsigned CTZ = DemandedMask.countTrailingZeros();  in SimplifyDemandedUseBits()
334       unsigned CTZ = DemandedMask.countTrailingZeros();  in SimplifyDemandedUseBits()
345     if (SimplifyDemandedBits(I, 2, DemandedMask, RHSKnown, Depth + 1) ||  in SimplifyDemandedUseBits()
346         SimplifyDemandedBits(I, 1, DemandedMask, LHSKnown, Depth + 1))  in SimplifyDemandedUseBits()
352     if (ShrinkDemandedConstant(I, 1, DemandedMask) ||  in SimplifyDemandedUseBits()
353         ShrinkDemandedConstant(I, 2, DemandedMask))  in SimplifyDemandedUseBits()
365     APInt InputDemandedMask = DemandedMask.zextOrTrunc(SrcBitWidth);  in SimplifyDemandedUseBits()
393     if (SimplifyDemandedBits(I, 0, DemandedMask, Known, Depth + 1))  in SimplifyDemandedUseBits()
401     APInt InputDemandedBits = DemandedMask.trunc(SrcBitWidth);  in SimplifyDemandedUseBits()
405     if (DemandedMask.getActiveBits() > SrcBitWidth)  in SimplifyDemandedUseBits()
415         DemandedMask.getActiveBits() <= SrcBitWidth) {  in SimplifyDemandedUseBits()
431     unsigned NLZ = DemandedMask.countLeadingZeros();  in SimplifyDemandedUseBits()
474                                                     DemandedMask, Known))  in SimplifyDemandedUseBits()
478       APInt DemandedMaskIn(DemandedMask.lshr(ShiftAmt));  in SimplifyDemandedUseBits()
504       APInt DemandedMaskIn(DemandedMask.shl(ShiftAmt));  in SimplifyDemandedUseBits()
526     if (DemandedMask.isOneValue()) {  in SimplifyDemandedUseBits()
535     if (DemandedMask.isSignMask())  in SimplifyDemandedUseBits()
543       APInt DemandedMaskIn(DemandedMask.shl(ShiftAmt));  in SimplifyDemandedUseBits()
546       if (DemandedMask.countLeadingZeros() <= ShiftAmt)  in SimplifyDemandedUseBits()
570           !DemandedMask.intersects(HighBits)) {  in SimplifyDemandedUseBits()
610         if (DemandedMask.ult(RA))    // srem won't affect demanded bits  in SimplifyDemandedUseBits()
639     if (DemandedMask.isSignBitSet()) {  in SimplifyDemandedUseBits()
654     Known.Zero = APInt::getHighBitsSet(BitWidth, Leaders) & DemandedMask;  in SimplifyDemandedUseBits()
664         unsigned NLZ = DemandedMask.countLeadingZeros();  in SimplifyDemandedUseBits()
665         unsigned NTZ = DemandedMask.countTrailingZeros();  in SimplifyDemandedUseBits()
705         APInt DemandedMaskLHS(DemandedMask.lshr(ShiftAmt));  in SimplifyDemandedUseBits()
706         APInt DemandedMaskRHS(DemandedMask.shl(BitWidth - ShiftAmt));  in SimplifyDemandedUseBits()
737         APInt DemandedElts = DemandedMask.zextOrTrunc(ArgWidth);  in SimplifyDemandedUseBits()
756   if (DemandedMask.isSubsetOf(Known.Zero|Known.One))  in SimplifyDemandedUseBits()
765                                                      const APInt &DemandedMask,  in SimplifyMultipleUseDemandedBits()  argument
769   unsigned BitWidth = DemandedMask.getBitWidth();  in SimplifyMultipleUseDemandedBits()
793     if (DemandedMask.isSubsetOf(IKnownZero|IKnownOne))  in SimplifyMultipleUseDemandedBits()
799     if (DemandedMask.isSubsetOf(LHSKnown.Zero | RHSKnown.One))  in SimplifyMultipleUseDemandedBits()
801     if (DemandedMask.isSubsetOf(RHSKnown.Zero | LHSKnown.One))  in SimplifyMultipleUseDemandedBits()
824     if (DemandedMask.isSubsetOf(IKnownZero|IKnownOne))  in SimplifyMultipleUseDemandedBits()
830     if (DemandedMask.isSubsetOf(LHSKnown.One | RHSKnown.Zero))  in SimplifyMultipleUseDemandedBits()
832     if (DemandedMask.isSubsetOf(RHSKnown.One | LHSKnown.Zero))  in SimplifyMultipleUseDemandedBits()
856     if (DemandedMask.isSubsetOf(IKnownZero|IKnownOne))  in SimplifyMultipleUseDemandedBits()
861     if (DemandedMask.isSubsetOf(RHSKnown.Zero))  in SimplifyMultipleUseDemandedBits()
863     if (DemandedMask.isSubsetOf(LHSKnown.Zero))  in SimplifyMultipleUseDemandedBits()
878     if (DemandedMask.isSubsetOf(Known.Zero|Known.One))  in SimplifyMultipleUseDemandedBits()
908                                          const APInt &DemandedMask,  in simplifyShrShlDemandedBits()  argument
924   Known.Zero &= DemandedMask;  in simplifyShrShlDemandedBits()
941   if ((BitMask1 & DemandedMask) == (BitMask2 & DemandedMask)) {  in simplifyShrShlDemandedBits()