If I run Implementation, the log file mentions an XDC file under the implementation runs directory. However, there is no such file found in the specified directory. Following is an example of the message:
Parsing XDC File [/home/eda/project_1/project_1.runs/impl_1/.Xil/Vivado-3720-xsjsrinivaslx/dcp/top.xdc]
Finished Parsing XDC File [/home/eda/project_1/project_1.runs/impl_1/.Xil/Vivado-3720-xsjsrinivaslx/dcp/top.xdc]
Is this the expected behavior?
This is the expected behavior. The XDC file mentioned in the log is a temporary file; the file is created during implementation, but it is removed after implementation.