diff options
Diffstat (limited to 'lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | lib/Analysis/ValueTracking.cpp | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp index 70d51fac3f..7e208692ac 100644 --- a/lib/Analysis/ValueTracking.cpp +++ b/lib/Analysis/ValueTracking.cpp @@ -460,18 +460,6 @@ void llvm::ComputeMaskedBits(Value *V, const APInt &Mask, assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?"); } } - if (Mask.isNegative()) { // We're looking for the sign bit. - APInt Mask2 = APInt::getSignBit(BitWidth); - KnownZero2 = 0; - KnownOne2 = 0; - ComputeMaskedBits(I->getOperand(0), Mask2, KnownZero2, KnownOne2, TD, - Depth+1); - if (KnownOne2[BitWidth-1]) - KnownOne |= Mask2; - if (KnownZero2[BitWidth-1]) - KnownZero |= Mask2; - assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?"); - } break; case Instruction::URem: { if (ConstantInt *Rem = dyn_cast<ConstantInt>(I->getOperand(1))) { |