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Silencing a -Wtype-limits warning; an unsigned value will always be >= 0; NFC. 

llvm-svn: 250404
This commit is contained in:
Aaron Ballman 2015-10-15 13:55:43 +00:00
parent 430443ba61
commit 58f413c518
1 changed files with 1 additions and 1 deletions
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llvm/lib/Analysis/ValueTracking.cpp
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@ -1382,7 +1382,7 @@ static void computeKnownBitsFromOperator(Operator *I, APInt &KnownZero,
unsigned BitsPossiblySet = BitWidth - KnownZero2.countPopulation(); unsigned BitsPossiblySet = BitWidth - KnownZero2.countPopulation();
unsigned LeadingZeros = unsigned LeadingZeros =
APInt(BitWidth, BitsPossiblySet).countLeadingZeros(); APInt(BitWidth, BitsPossiblySet).countLeadingZeros();
assert(LeadingZeros >= 0 && LeadingZeros <= BitWidth); assert(LeadingZeros <= BitWidth);
KnownZero |= APInt::getHighBitsSet(BitWidth, LeadingZeros); KnownZero |= APInt::getHighBitsSet(BitWidth, LeadingZeros);
KnownOne &= ~KnownZero; KnownOne &= ~KnownZero;
// TODO: we could bound KnownOne using the lower bound on the number // TODO: we could bound KnownOne using the lower bound on the number