Cross Reference: /external/llvm/include/llvm/ADT/APInt.h

Lines Matching defs:numBits
172   void fromString(unsigned numBits, StringRef str, uint8_t radix);
184   void initSlowCase(unsigned numBits, uint64_t val, bool isSigned);
226   /// \brief Create a new APInt of numBits width, initialized as val.
233   /// \param numBits the bit width of the constructed APInt
236   APInt(unsigned numBits, uint64_t val, bool isSigned = false)
237       : BitWidth(numBits), VAL(0) {
242       initSlowCase(numBits, val, isSigned);
246   /// \brief Construct an APInt of numBits width, initialized as bigVal[].
251   /// \param numBits the bit width of the constructed APInt
253   APInt(unsigned numBits, ArrayRef<uint64_t> bigVal);
255   /// Equivalent to APInt(numBits, ArrayRef<uint64_t>(bigVal, numWords)), but
262   APInt(unsigned numBits, unsigned numWords, const uint64_t bigVal[]);
270   /// string to require more bits than numBits.
272   /// \param numBits the bit width of the constructed APInt
275   APInt(unsigned numBits, StringRef str, uint8_t radix);
418   static APInt getMaxValue(unsigned numBits) {
419     return getAllOnesValue(numBits);
423   static APInt getSignedMaxValue(unsigned numBits) {
424     APInt API = getAllOnesValue(numBits);
425     API.clearBit(numBits - 1);
430   static APInt getMinValue(unsigned numBits) { return APInt(numBits, 0); }
433   static APInt getSignedMinValue(unsigned numBits) {
434     APInt API(numBits, 0);
435     API.setBit(numBits - 1);
450   static APInt getAllOnesValue(unsigned numBits) {
451     return APInt(numBits, UINT64_MAX, true);
457   static APInt getNullValue(unsigned numBits) { return APInt(numBits, 0); }
459   /// \brief Compute an APInt containing numBits highbits from this APInt.
464   /// \returns the high "numBits" bits of this APInt.
465   APInt getHiBits(unsigned numBits) const;
467   /// \brief Compute an APInt containing numBits lowbits from this APInt.
472   /// \returns the low "numBits" bits of this APInt.
473   APInt getLoBits(unsigned numBits) const;
476   static APInt getOneBitSet(unsigned numBits, unsigned BitNo) {
477     APInt Res(numBits, 0);
490   /// \param numBits the intended bit width of the result
495   static APInt getBitsSet(unsigned numBits, unsigned loBit, unsigned hiBit) {
496     assert(hiBit <= numBits && "hiBit out of range");
497     assert(loBit < numBits && "loBit out of range");
499       return getLowBitsSet(numBits, hiBit) |
500              getHighBitsSet(numBits, numBits - loBit);
501     return getLowBitsSet(numBits, hiBit - loBit).shl(loBit);
508   /// \param numBits the bitwidth of the result
510   static APInt getHighBitsSet(unsigned numBits, unsigned hiBitsSet) {
511     assert(hiBitsSet <= numBits && "Too many bits to set!");
514       return APInt(numBits, 0);
515     unsigned shiftAmt = numBits - hiBitsSet;
517     if (numBits <= APINT_BITS_PER_WORD)
518       return APInt(numBits, ~0ULL << shiftAmt);
519     return getAllOnesValue(numBits).shl(shiftAmt);
526   /// \param numBits the bitwidth of the result
528   static APInt getLowBitsSet(unsigned numBits, unsigned loBitsSet) {
529     assert(loBitsSet <= numBits && "Too many bits to set!");
532       return APInt(numBits, 0);
534       return APInt(numBits, UINT64_MAX);
537       return APInt(numBits, UINT64_MAX >> (APINT_BITS_PER_WORD - loBitsSet));
538     return getAllOnesValue(numBits).lshr(numBits - loBitsSet);
1711 inline bool isMask(unsigned numBits, const APInt &APIVal) {
1712   return numBits <= APIVal.getBitWidth() &&
1713          APIVal == APInt::getLowBitsSet(APIVal.getBitWidth(), numBits);
1718 inline bool isShiftedMask(unsigned numBits, const APInt &APIVal) {
1719   return isMask(numBits, (APIVal - APInt(numBits, 1)) | APIVal);