if node.Op == token.SHL || node.Op == token.SHR {
				checkLongShift(pass, node, node.X, node.Y)
			}
		case *ast.AssignStmt:
			if len(node.Lhs) != 1 || len(node.Rhs) != 1 {
				return
			}
			if node.Tok == token.SHL_ASSIGN || node.Tok == token.SHR_ASSIGN {
				checkLongShift(pass, node, node.Lhs[0], node.Rhs[0])
			}
		}
	})
	return nil, nil
}

// checkLongShift checks if shift or shift-assign operations shift by more than