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);
416   static APInt getMaxValue(unsigned numBits) {
417     return getAllOnesValue(numBits);
421   static APInt getSignedMaxValue(unsigned numBits) {
422     APInt API = getAllOnesValue(numBits);
423     API.clearBit(numBits - 1);
428   static APInt getMinValue(unsigned numBits) { return APInt(numBits, 0); }
431   static APInt getSignedMinValue(unsigned numBits) {
432     APInt API(numBits, 0);
433     API.setBit(numBits - 1);
448   static APInt getAllOnesValue(unsigned numBits) {
449     return APInt(numBits, UINT64_MAX, true);
455   static APInt getNullValue(unsigned numBits) { return APInt(numBits, 0); }
457   /// \brief Compute an APInt containing numBits highbits from this APInt.
462   /// \returns the high "numBits" bits of this APInt.
463   APInt getHiBits(unsigned numBits) const;
465   /// \brief Compute an APInt containing numBits lowbits from this APInt.
470   /// \returns the low "numBits" bits of this APInt.
471   APInt getLoBits(unsigned numBits) const;
474   static APInt getOneBitSet(unsigned numBits, unsigned BitNo) {
475     APInt Res(numBits, 0);
488   /// \param numBits the intended bit width of the result
493   static APInt getBitsSet(unsigned numBits, unsigned loBit, unsigned hiBit) {
494     assert(hiBit <= numBits && "hiBit out of range");
495     assert(loBit < numBits && "loBit out of range");
497       return getLowBitsSet(numBits, hiBit) |
498              getHighBitsSet(numBits, numBits - loBit);
499     return getLowBitsSet(numBits, hiBit - loBit).shl(loBit);
506   /// \param numBits the bitwidth of the result
508   static APInt getHighBitsSet(unsigned numBits, unsigned hiBitsSet) {
509     assert(hiBitsSet <= numBits && "Too many bits to set!");
512       return APInt(numBits, 0);
513     unsigned shiftAmt = numBits - hiBitsSet;
515     if (numBits <= APINT_BITS_PER_WORD)
516       return APInt(numBits, ~0ULL << shiftAmt);
517     return getAllOnesValue(numBits).shl(shiftAmt);
524   /// \param numBits the bitwidth of the result
526   static APInt getLowBitsSet(unsigned numBits, unsigned loBitsSet) {
527     assert(loBitsSet <= numBits && "Too many bits to set!");
530       return APInt(numBits, 0);
532       return APInt(numBits, UINT64_MAX);
535       return APInt(numBits, UINT64_MAX >> (APINT_BITS_PER_WORD - loBitsSet));
536     return getAllOnesValue(numBits).lshr(numBits - loBitsSet);
1742 inline bool isMask(unsigned numBits, const APInt &APIVal) {
1743   return numBits <= APIVal.getBitWidth() &&
1744          APIVal == APInt::getLowBitsSet(APIVal.getBitWidth(), numBits);
1749 inline bool isShiftedMask(unsigned numBits, const APInt &APIVal) {
1750   return isMask(numBits, (APIVal - APInt(numBits, 1)) | APIVal);