Transforms/InstCombine/InstCombineSimplifyDemanded.cpp

42                                    const APInt &Demanded) {
48   const APInt *C;
69   APInt DemandedMask(APInt::getAllOnesValue(BitWidth));
83                                         const APInt &DemandedMask,
118 Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask,
177     APInt IKnownZero = RHSKnown.Zero | LHSKnown.Zero;
179     APInt IKnownOne = RHSKnown.One & LHSKnown.One;
211     APInt IKnownZero = RHSKnown.Zero & LHSKnown.Zero;
213     APInt IKnownOne = RHSKnown.One | LHSKnown.One;
243     APInt IKnownZero = (RHSKnown.Zero & LHSKnown.Zero) |
246     APInt IKnownOne =  (RHSKnown.Zero & LHSKnown.One) |
299         APInt NewMask = ~(LHSKnown.One & RHSKnown.One & DemandedMask);
325       const APInt *C;
334       const APInt *C;
358                                          APInt DemandedMask) {
359       const APInt *SelC;
364       const APInt *CmpC;
394     APInt InputDemandedMask = DemandedMask.zextOrTrunc(SrcBitWidth);
429     APInt InputDemandedBits = DemandedMask.trunc(SrcBitWidth);
462     APInt DemandedFromOps(APInt::getLowBitsSet(BitWidth, BitWidth-NLZ));
496     const APInt *SA;
498       const APInt *ShrAmt;
506       APInt DemandedMaskIn(DemandedMask.lshr(ShiftAmt));
527     const APInt *SA;
532       APInt DemandedMaskIn(DemandedMask.shl(ShiftAmt));
566     const APInt *SA;
571       APInt DemandedMaskIn(DemandedMask.shl(ShiftAmt));
589       APInt HighBits(APInt::getHighBitsSet(
611     const APInt *SA;
619       APInt DemandedMaskIn =
620           APInt::getHighBitsSet(BitWidth, BitWidth - RHSTrailingZeros);
636       APInt RA = Rem->getValue().abs();
641         APInt LowBits = RA - 1;
642         APInt Mask2 = LowBits | APInt::getSignMask(BitWidth);
676     APInt AllOnes = APInt::getAllOnesValue(BitWidth);
682     Known.Zero = APInt::getHighBitsSet(BitWidth, Leaders) & DemandedMask;
723         const APInt *SA;
727         // Normalize to funnel shift left. APInt shifts of BitWidth are well-
733         APInt DemandedMaskLHS(DemandedMask.lshr(ShiftAmt));
734         APInt DemandedMaskRHS(DemandedMask.shl(BitWidth - ShiftAmt));
765         APInt DemandedElts = DemandedMask.zextOrTrunc(ArgWidth);
793                                                      const APInt &DemandedMask,
815     APInt IKnownZero = RHSKnown.Zero | LHSKnown.Zero;
817     APInt IKnownOne = RHSKnown.One & LHSKnown.One;
846     APInt IKnownZero = RHSKnown.Zero & LHSKnown.Zero;
848     APInt IKnownOne = RHSKnown.One | LHSKnown.One;
876     APInt IKnownZero = (RHSKnown.Zero & LHSKnown.Zero) |
879     APInt IKnownOne =  (RHSKnown.Zero & LHSKnown.One) |
934 InstCombiner::simplifyShrShlDemandedBits(Instruction *Shr, const APInt &ShrOp1,
935                                          Instruction *Shl, const APInt &ShlOp1,
936                                          const APInt &DemandedMask,
954   APInt BitMask1(APInt::getAllOnesValue(BitWidth));
955   APInt BitMask2(APInt::getAllOnesValue(BitWidth));
1002                                                            APInt DemandedElts,
1119 Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts,
1120                                                 APInt &UndefElts,
1124   APInt EltMask(APInt::getAllOnesValue(VWidth));
1198                               APInt Demanded, APInt &Undef) {
1210   APInt UndefElts2(VWidth, 0);
1211   APInt UndefElts3(VWidth, 0);
1240         APInt UndefEltsOp(VWidth, 0);
1262     APInt PreInsertDemandedElts = DemandedElts;
1286     APInt LeftDemanded(OpWidth, 0), RightDemanded(OpWidth, 0);
1301     APInt LHSUndefElts(OpWidth, 0);
1304     APInt RHSUndefElts(OpWidth, 0);
1426     APInt DemandedLHS(DemandedElts), DemandedRHS(DemandedElts);
1457     APInt InputDemandedElts(InVWidth, 0);
1458     UndefElts2 = APInt(InVWidth, 0);
1503         APInt SubUndef = UndefElts2.lshr(OutIdx * Ratio).zextOrTrunc(Ratio);
1526       APInt DemandedPtrs(APInt::getAllOnesValue(VWidth)),
1612       APInt DemandedElts2 = DemandedElts;
1693         APInt OpDemandedElts(InnerVWidth, 0);
1704         APInt OpUndefElts(InnerVWidth, 0);
1710           APInt LaneElts = OpUndefElts.lshr(InnerVWidthPerLane * Lane);