diff options
Diffstat (limited to 'lib/Analysis/InstructionSimplify.cpp')
| -rw-r--r-- | lib/Analysis/InstructionSimplify.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/Analysis/InstructionSimplify.cpp b/lib/Analysis/InstructionSimplify.cpp index f991291f565..5e72798d459 100644 --- a/lib/Analysis/InstructionSimplify.cpp +++ b/lib/Analysis/InstructionSimplify.cpp @@ -1338,7 +1338,7 @@ static Value *SimplifyLShrInst(Value *Op0, Value *Op1, bool isExact, const KnownBits YKnown = computeKnownBits(Y, Q.DL, 0, Q.AC, Q.CxtI, Q.DT); const unsigned Width = Op0->getType()->getScalarSizeInBits(); const unsigned EffWidthY = Width - YKnown.countMinLeadingZeros(); - if (EffWidthY <= ShRAmt->getZExtValue()) + if (ShRAmt->uge(EffWidthY)) return X; } @@ -1878,9 +1878,9 @@ static Value *SimplifyAndInst(Value *Op0, Value *Op1, const SimplifyQuery &Q, match(Op0, m_c_Or(m_CombineAnd(m_NUWShl(m_Value(X), m_APInt(ShAmt)), m_Value(XShifted)), m_Value(Y)))) { - const unsigned ShftCnt = ShAmt->getZExtValue(); - const KnownBits YKnown = computeKnownBits(Y, Q.DL, 0, Q.AC, Q.CxtI, Q.DT); const unsigned Width = Op0->getType()->getScalarSizeInBits(); + const unsigned ShftCnt = ShAmt->getLimitedValue(Width); + const KnownBits YKnown = computeKnownBits(Y, Q.DL, 0, Q.AC, Q.CxtI, Q.DT); const unsigned EffWidthY = Width - YKnown.countMinLeadingZeros(); if (EffWidthY <= ShftCnt) { const KnownBits XKnown = computeKnownBits(X, Q.DL, 0, Q.AC, Q.CxtI, |