You can use the /Fa option (Windows*) or -S and -o options (Linux*) to specify an alternate name for an assembly file. The compiler generates an assembly file named myasm.asm (Windows) or myasm.s (Linux).
For C/C++ projects:
// Linux icpx -S -omyasm.s x.cpp
// Windows icx /Famyasm x.cpp
For DPC++ projects:
// Linux dpcpp -S -omyasm.s x.cpp
// Windows dpcpp-cl /Famyasm x.cpp