- // The sign bit is set. First, get some facts
- unsigned wordsBefore = getNumWords();
- unsigned wordBits = BitWidth % APINT_BITS_PER_WORD;
- BitWidth = width;
- unsigned wordsAfter = getNumWords();
-
- // Mask the high order word appropriately
- if (wordsBefore == wordsAfter) {
- unsigned newWordBits = width % APINT_BITS_PER_WORD;
- // The extension is contained to the wordsBefore-1th word.
- uint64_t mask = ~0ULL;
- if (newWordBits)
- mask >>= APINT_BITS_PER_WORD - newWordBits;
- mask <<= wordBits;
- if (wordsBefore == 1)
- VAL |= mask;
- else
- pVal[wordsBefore-1] |= mask;
- return clearUnusedBits();
+ APInt Result(getMemory(getNumWords(width)), width);
+
+ // Copy full words.
+ unsigned i;
+ uint64_t word = 0;
+ for (i = 0; i != BitWidth / APINT_BITS_PER_WORD; i++) {
+ word = getRawData()[i];
+ Result.pVal[i] = word;