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Replace a hand-coded leading one counting loop with the magic from MathExtras.h.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152545 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-03-11 19:32:35 +00:00
parent 57a76605f0
commit 38d2ff4ac0
1 changed files with 1 additions and 8 deletions
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9
lib/Support/APInt.cpp
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@ -723,14 +723,7 @@ unsigned APInt::countLeadingZerosSlowCase() const {
}
static unsigned countLeadingOnes_64(uint64_t V, unsigned skip) {
unsigned Count = 0;
if (skip)
V <<= skip;
while (V && (V & (1ULL << 63))) {
Count++;
V <<= 1;
}
return Count;
return CountLeadingOnes_64(V << skip);
}
unsigned APInt::countLeadingOnes() const {