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Inline a trivial helper function.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152577 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-03-12 21:18:53 +00:00
parent da253ae40f
commit a185362095
1 changed files with 3 additions and 7 deletions
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10
lib/Support/APInt.cpp
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@ -722,13 +722,9 @@ unsigned APInt::countLeadingZerosSlowCase() const {
return Count;
}
static unsigned countLeadingOnes_64(uint64_t V, unsigned skip) {
return CountLeadingOnes_64(V << skip);
}
unsigned APInt::countLeadingOnes() const {
if (isSingleWord())
return countLeadingOnes_64(VAL, APINT_BITS_PER_WORD - BitWidth);
return CountLeadingOnes_64(VAL << (APINT_BITS_PER_WORD - BitWidth));
unsigned highWordBits = BitWidth % APINT_BITS_PER_WORD;
unsigned shift;
@ -739,13 +735,13 @@ unsigned APInt::countLeadingOnes() const {
shift = APINT_BITS_PER_WORD - highWordBits;
}
int i = getNumWords() - 1;
unsigned Count = countLeadingOnes_64(pVal[i], shift);
unsigned Count = CountLeadingOnes_64(pVal[i] << shift);
if (Count == highWordBits) {
for (i--; i >= 0; --i) {
if (pVal[i] == -1ULL)
Count += APINT_BITS_PER_WORD;
else {
Count += countLeadingOnes_64(pVal[i], 0);
Count += CountLeadingOnes_64(pVal[i]);
break;
}
}