543   BinaryOperator *ShiftOp = dyn_cast<BinaryOperator>(Op0);  in FoldShiftByConstant()  local
544   if (ShiftOp && !ShiftOp->isShift())  in FoldShiftByConstant()
545     ShiftOp = nullptr;  in FoldShiftByConstant()
547   if (ShiftOp && isa<ConstantInt>(ShiftOp->getOperand(1))) {  in FoldShiftByConstant()
561     ConstantInt *ShiftAmt1C = cast<ConstantInt>(ShiftOp->getOperand(1));  in FoldShiftByConstant()
566     Value *X = ShiftOp->getOperand(0);  in FoldShiftByConstant()
571     if (I.getOpcode() == ShiftOp->getOpcode()) {  in FoldShiftByConstant()
588           ShiftOp->getOpcode() == Instruction::Shl) {  in FoldShiftByConstant()
600           ShiftOp->getOpcode() != Instruction::Shl &&  in FoldShiftByConstant()
601           ShiftOp->isExact()) {  in FoldShiftByConstant()
602         assert(ShiftOp->getOpcode() == Instruction::LShr ||  in FoldShiftByConstant()
603                ShiftOp->getOpcode() == Instruction::AShr);  in FoldShiftByConstant()
614           ShiftOp->getOpcode() == Instruction::Shl) {  in FoldShiftByConstant()
617         if (ShiftOp->hasNoUnsignedWrap()) {  in FoldShiftByConstant()
633           ShiftOp->getOpcode() == Instruction::Shl) {  in FoldShiftByConstant()
634         if (ShiftOp->hasNoSignedWrap()) {  in FoldShiftByConstant()
651           ShiftOp->getOpcode() != Instruction::Shl &&  in FoldShiftByConstant()
652           ShiftOp->isExact()) {  in FoldShiftByConstant()
654         BinaryOperator *NewShr = BinaryOperator::Create(ShiftOp->getOpcode(),  in FoldShiftByConstant()
662           ShiftOp->getOpcode() == Instruction::Shl) {  in FoldShiftByConstant()
664         if (ShiftOp->hasNoUnsignedWrap()) {  in FoldShiftByConstant()
681           ShiftOp->getOpcode() == Instruction::Shl) {  in FoldShiftByConstant()
682         if (ShiftOp->hasNoSignedWrap()) {  in FoldShiftByConstant()