535   BinaryOperator *ShiftOp = dyn_cast<BinaryOperator>(Op0);  in FoldShiftByConstant()  local
536   if (ShiftOp && !ShiftOp->isShift())  in FoldShiftByConstant()
537     ShiftOp = nullptr;  in FoldShiftByConstant()
539   if (ShiftOp && isa<ConstantInt>(ShiftOp->getOperand(1))) {  in FoldShiftByConstant()
553     ConstantInt *ShiftAmt1C = cast<ConstantInt>(ShiftOp->getOperand(1));  in FoldShiftByConstant()
558     Value *X = ShiftOp->getOperand(0);  in FoldShiftByConstant()
563     if (I.getOpcode() == ShiftOp->getOpcode()) {  in FoldShiftByConstant()
580           ShiftOp->getOpcode() == Instruction::Shl) {  in FoldShiftByConstant()
592           ShiftOp->getOpcode() != Instruction::Shl &&  in FoldShiftByConstant()
593           ShiftOp->isExact()) {  in FoldShiftByConstant()
594         assert(ShiftOp->getOpcode() == Instruction::LShr ||  in FoldShiftByConstant()
595                ShiftOp->getOpcode() == Instruction::AShr);  in FoldShiftByConstant()
606           ShiftOp->getOpcode() == Instruction::Shl) {  in FoldShiftByConstant()
609         if (ShiftOp->hasNoUnsignedWrap()) {  in FoldShiftByConstant()
625           ShiftOp->getOpcode() == Instruction::Shl) {  in FoldShiftByConstant()
626         if (ShiftOp->hasNoSignedWrap()) {  in FoldShiftByConstant()
643           ShiftOp->getOpcode() != Instruction::Shl &&  in FoldShiftByConstant()
644           ShiftOp->isExact()) {  in FoldShiftByConstant()
646         BinaryOperator *NewShr = BinaryOperator::Create(ShiftOp->getOpcode(),  in FoldShiftByConstant()
654           ShiftOp->getOpcode() == Instruction::Shl) {  in FoldShiftByConstant()
656         if (ShiftOp->hasNoUnsignedWrap()) {  in FoldShiftByConstant()
673           ShiftOp->getOpcode() == Instruction::Shl) {  in FoldShiftByConstant()
674         if (ShiftOp->hasNoSignedWrap()) {  in FoldShiftByConstant()