diff options
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/InstructionCombining.cpp | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp index 79ad33697c7..abb279f7740 100644 --- a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp @@ -695,7 +695,7 @@ static void ComputeMaskedBits(Value *V, APInt Mask, APInt& KnownZero, // If the sign bit of the input is known set or clear, then we know the // top bits of the result. - APInt InSignBit(APInt::getSignedMinValue(SrcTy->getBitWidth())); + APInt InSignBit(APInt::getSignBit(SrcTy->getBitWidth())); InSignBit.zextOrTrunc(BitWidth); if ((KnownZero & InSignBit) != 0) { // Input sign bit known zero KnownZero |= NewBits; @@ -716,8 +716,8 @@ static void ComputeMaskedBits(Value *V, APInt Mask, APInt& KnownZero, Mask = APIntOps::lshr(Mask, ShiftAmt); ComputeMaskedBits(I->getOperand(0), Mask, KnownZero, KnownOne, Depth+1); assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?"); - KnownZero = APIntOps::shl(KnownZero, ShiftAmt); - KnownOne = APIntOps::shl(KnownOne, ShiftAmt); + KnownZero <<= ShiftAmt; + KnownOne <<= ShiftAmt; KnownZero |= APInt(BitWidth, 1ULL).shl(ShiftAmt)-1; // low bits known zero. return; } @@ -730,7 +730,7 @@ static void ComputeMaskedBits(Value *V, APInt Mask, APInt& KnownZero, APInt HighBits(APInt::getAllOnesValue(BitWidth).shl(BitWidth-ShiftAmt)); // Unsigned shift right. - Mask = APIntOps::shl(Mask, ShiftAmt); + Mask <<= ShiftAmt; ComputeMaskedBits(I->getOperand(0), Mask, KnownZero,KnownOne,Depth+1); assert((KnownZero & KnownOne) == 0&&"Bits known to be one AND zero?"); KnownZero = APIntOps::lshr(KnownZero, ShiftAmt); @@ -747,14 +747,14 @@ static void ComputeMaskedBits(Value *V, APInt Mask, APInt& KnownZero, APInt HighBits(APInt::getAllOnesValue(BitWidth).shl(BitWidth-ShiftAmt)); // Signed shift right. - Mask = APIntOps::shl(Mask, ShiftAmt); + Mask <<= ShiftAmt; ComputeMaskedBits(I->getOperand(0), Mask, KnownZero,KnownOne,Depth+1); assert((KnownZero & KnownOne) == 0&&"Bits known to be one AND zero?"); KnownZero = APIntOps::lshr(KnownZero, ShiftAmt); KnownOne = APIntOps::lshr(KnownOne, ShiftAmt); // Handle the sign bits and adjust to where it is now in the mask. - APInt SignBit = APInt::getSignedMinValue(BitWidth).lshr(ShiftAmt); + APInt SignBit(APInt::getSignBit(BitWidth).lshr(ShiftAmt)); if ((KnownZero & SignBit) != 0) { // New bits are known zero. KnownZero |= HighBits; |
