diff options
Diffstat (limited to 'lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | lib/Analysis/ValueTracking.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp index 6f58afe527..e2d7e9290a 100644 --- a/lib/Analysis/ValueTracking.cpp +++ b/lib/Analysis/ValueTracking.cpp @@ -337,7 +337,7 @@ void llvm::ComputeMaskedBits(Value *V, const APInt &Mask, // (ashr X, C1) & C2 == 0 iff (-1 >> C1) & C2 == 0 if (ConstantInt *SA = dyn_cast<ConstantInt>(I->getOperand(1))) { // Compute the new bits that are at the top now. - uint64_t ShiftAmt = SA->getLimitedValue(BitWidth); + uint64_t ShiftAmt = SA->getLimitedValue(BitWidth-1); // Signed shift right. APInt Mask2(Mask.shl(ShiftAmt)); |