Xcode does not generate dSYM file
I went through this apple doc. This helped me. This says to set the Debug Information format to be DWARF AND DSYM in target build settings.
This apple doc says the following:
By default, Xcode saves symbols as dSYM bundles in the Build folder. Xcode creates the default dSYM bundle path by adding the extension .dSYM to the executable name. To generate dSYM bundles in Xcode, go to the Build Settings area for your project, and select Debug Information Format > Dwarf with dSYM File in the Build Options section