diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index d5bc4436f8e..e3de30417b0 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -26717,8 +26717,8 @@ void X86TargetLowering::computeKnownBitsForTargetNode(const SDValue Op, DAG.computeKnownBits(Op.getOperand(0), KnownZero, KnownOne, Depth + 1); unsigned ShAmt = ShiftImm->getZExtValue(); if (Opc == X86ISD::VSHLI) { - KnownZero <<= ShAmt; - KnownOne <<= ShAmt; + KnownZero = KnownZero << ShAmt; + KnownOne = KnownOne << ShAmt; // Low bits are known zero. KnownZero.setLowBits(ShAmt); } else { @@ -31054,7 +31054,8 @@ static SDValue combineShiftLeft(SDNode *N, SelectionDAG &DAG) { N0.getOperand(1).getOpcode() == ISD::Constant) { SDValue N00 = N0.getOperand(0); APInt Mask = cast<ConstantSDNode>(N0.getOperand(1))->getAPIntValue(); - Mask <<= N1C->getAPIntValue(); + const APInt &ShAmt = N1C->getAPIntValue(); + Mask = Mask.shl(ShAmt); bool MaskOK = false; // We can handle cases concerning bit-widening nodes containing setcc_c if // we carefully interrogate the mask to make sure we are semantics @@ -31264,9 +31265,9 @@ static SDValue combineVectorShiftImm(SDNode *N, SelectionDAG &DAG, unsigned ShiftImm = ShiftVal.getZExtValue(); for (APInt &Elt : EltBits) { if (X86ISD::VSHLI == Opcode) - Elt <<= ShiftImm; + Elt = Elt.shl(ShiftImm); else if (X86ISD::VSRAI == Opcode) - Elt.ashrInPlace(ShiftImm); + Elt = Elt.ashr(ShiftImm); else Elt.lshrInPlace(ShiftImm); } |
