lib/Support/APInt.cpp

337 /// as "bitPosition".
339 void APInt::flipBit(unsigned bitPosition) {
340   assert(bitPosition < BitWidth && "Out of the bit-width range!");
341   if ((*this)[bitPosition]) clearBit(bitPosition);
342   else setBit(bitPosition);
345 void APInt::insertBits(const APInt &subBits, unsigned bitPosition) {
347   assert(0 < subBitWidth && (subBitWidth + bitPosition) <= BitWidth &&
359     U.VAL &= ~(mask << bitPosition);
360     U.VAL |= (subBits.U.VAL << bitPosition);
364   unsigned loBit = whichBit(bitPosition);
365   unsigned loWord = whichWord(bitPosition);
366   unsigned hi1Word = whichWord(bitPosition + subBitWidth - 1);
398       setBit(bitPosition + i);
400       clearBit(bitPosition + i);
404 void APInt::insertBits(uint64_t subBits, unsigned bitPosition, unsigned numBits) {
408     U.VAL &= ~(maskBits << bitPosition);
409     U.VAL |= subBits << bitPosition;
413   unsigned loBit = whichBit(bitPosition);
414   unsigned loWord = whichWord(bitPosition);
415   unsigned hiWord = whichWord(bitPosition + numBits - 1);
431 APInt APInt::extractBits(unsigned numBits, unsigned bitPosition) const {
433   assert(bitPosition < BitWidth && (numBits + bitPosition) <= BitWidth &&
437     return APInt(numBits, U.VAL >> bitPosition);
439   unsigned loBit = whichBit(bitPosition);
440   unsigned loWord = whichWord(bitPosition);
441   unsigned hiWord = whichWord(bitPosition + numBits - 1);
469                                        unsigned bitPosition) const {
471   assert(bitPosition < BitWidth && (numBits + bitPosition) <= BitWidth &&
477     return (U.VAL >> bitPosition) & maskBits;
479   unsigned loBit = whichBit(bitPosition);
480   unsigned loWord = whichWord(bitPosition);
481   unsigned hiWord = whichWord(bitPosition + numBits - 1);