W-M-R opened a new pull request, #14877:
URL: https://github.com/apache/nuttx/pull/14877
## Summary
Supports data storage for code coverage detection without a file system
## Impact
*Update this section, where applicable, on how change affects users,
build process, hardware, documentation, security, compatibility, etc.*
## Testing
Compile "boards/arm/mps/mps3-an547/configs/gcov", find the module that needs
code coverage analysis, add the parameter` "-fprofile-instr-generate
-fcoverage-mapping"`, run `qemu-system-arm -M mps3-an547 -nographic -kernel
./nuttx/nuttx`, execute the app that calls __llvm_profile_dump, if you set the
dump to memory, read the memory in your own way, such as gdb. If you use the
default dump to file, please dump the file to the host, and finally use the
following command to run：
```
"llvm-profdata merge -sparse default.profraw -o result.profdata"
"llvm-cov show -format=html ./nuttx/nuttx -instr-profile=result.profdata
-output-dir=./coverage/"
```
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