diff options
Diffstat (limited to 'llvm/lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ValueTracking.cpp | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp index a7aee65..8568a23 100644 --- a/llvm/lib/Analysis/ValueTracking.cpp +++ b/llvm/lib/Analysis/ValueTracking.cpp @@ -1223,10 +1223,7 @@ static void computeKnownBitsFromOperator(const Operator *I, case Instruction::Shl: { bool NSW = Q.IIQ.hasNoSignedWrap(cast<OverflowingBinaryOperator>(I)); auto KF = [NSW](const KnownBits &KnownShiftVal, unsigned ShiftAmt) { - APInt ShiftAmtV(KnownShiftVal.getBitWidth(), ShiftAmt); - KnownBits KnownShiftAmt; - KnownShiftAmt.One = ShiftAmtV; - KnownShiftAmt.Zero = ~ShiftAmtV; + KnownBits KnownShiftAmt = KnownBits::makeConstant(APInt(32, ShiftAmt)); KnownBits Result = KnownBits::shl(KnownShiftVal, KnownShiftAmt); // If this shift has "nsw" keyword, then the result is either a poison // value or has the same sign bit as the first operand. @@ -1244,10 +1241,7 @@ static void computeKnownBitsFromOperator(const Operator *I, } case Instruction::LShr: { auto KF = [](const KnownBits &KnownShiftVal, unsigned ShiftAmt) { - APInt ShiftAmtV(KnownShiftVal.getBitWidth(), ShiftAmt); - KnownBits KnownShiftAmt; - KnownShiftAmt.One = ShiftAmtV; - KnownShiftAmt.Zero = ~ShiftAmtV; + KnownBits KnownShiftAmt = KnownBits::makeConstant(APInt(32, ShiftAmt)); return KnownBits::lshr(KnownShiftVal, KnownShiftAmt); }; computeKnownBitsFromShiftOperator(I, DemandedElts, Known, Known2, Depth, Q, @@ -1256,10 +1250,7 @@ static void computeKnownBitsFromOperator(const Operator *I, } case Instruction::AShr: { auto KF = [](const KnownBits &KnownShiftVal, unsigned ShiftAmt) { - APInt ShiftAmtV(KnownShiftVal.getBitWidth(), ShiftAmt); - KnownBits KnownShiftAmt; - KnownShiftAmt.One = ShiftAmtV; - KnownShiftAmt.Zero = ~ShiftAmtV; + KnownBits KnownShiftAmt = KnownBits::makeConstant(APInt(32, ShiftAmt)); return KnownBits::ashr(KnownShiftVal, KnownShiftAmt); }; computeKnownBitsFromShiftOperator(I, DemandedElts, Known, Known2, Depth, Q, |