When you use Non-Project Mode, you read various design sources into the
in-memory design for processing by Vivado implementation tools. Each
Vivado Design Suite source file type has a
corresponding read_* Tcl command, such as read_verilog, read_vhdl, read_ip, read_edif, or
read_xdc. You must read sources each time you start
the Tcl script or interactive flow.
Tip: Do not use the
add_files or import_files
Tcl commands in Non-Project Mode because there is no project structure to import files
into.