22 struct KnownBits {  struct
27   // Internal constructor for creating a KnownBits from two APInts.  argument
28   KnownBits(APInt Zero, APInt One)  in KnownBits()  argument
33   KnownBits() {}  in KnownBits()  argument
36   KnownBits(unsigned BitWidth) : Zero(BitWidth, 0), One(BitWidth, 0) {}  in KnownBits()  function
50     assert(!hasConflict() && "KnownBits conflict!");  in isConstant()  argument
72     assert(!hasConflict() && "KnownBits conflict!");  in isZero()  argument
78     assert(!hasConflict() && "KnownBits conflict!");  in isAllOnes()  argument
83   void setAllZero() {  in setAllZero()
89   void setAllOnes() {  in setAllOnes()
116   /// Return the minimal value possible given these KnownBits.  argument
122   /// Return the maximal value possible given these KnownBits.  argument
129   KnownBits trunc(unsigned BitWidth) const {  in trunc()  argument
135   KnownBits anyext(unsigned BitWidth) const {  in anyext()  argument
140   KnownBits zext(unsigned BitWidth) const {  in zext()  argument
148   KnownBits sext(unsigned BitWidth) const {  in sext()  argument
154   KnownBits anyextOrTrunc(unsigned BitWidth) const {  in anyextOrTrunc()  argument
164   KnownBits zextOrTrunc(unsigned BitWidth) const {  in zextOrTrunc()  argument
174   KnownBits sextOrTrunc(unsigned BitWidth) const {  in sextOrTrunc()  argument
188   KnownBits extractBits(unsigned NumBits, unsigned BitPosition) const {  in extractBits()  argument
198   unsigned countMinTrailingZeros() const {  in countMinTrailingZeros()
203   unsigned countMinTrailingOnes() const {  in countMinTrailingOnes()
208   unsigned countMinLeadingZeros() const {  in countMinLeadingZeros()
213   unsigned countMinLeadingOnes() const {  in countMinLeadingOnes()
219   unsigned countMinSignBits() const {  in countMinSignBits()
228   unsigned countMaxTrailingZeros() const {  in countMaxTrailingZeros()
233   unsigned countMaxTrailingOnes() const {  in countMaxTrailingOnes()
258   static KnownBits makeConstant(const APInt &C) {  in makeConstant()  argument
263   static KnownBits commonBits(const KnownBits &LHS, const KnownBits &RHS) {  in commonBits()  argument
312   void insertBits(const KnownBits &SubBits, unsigned BitPosition) {  in insertBits()  argument
318   KnownBits extractBits(unsigned NumBits, unsigned BitPosition) {  in extractBits()  argument
335   KnownBits byteSwap() {  in byteSwap()  argument
339   KnownBits reverseBits() {  in reverseBits()  argument