llvm-readelf does not support compressed sections

[emaste]

GNU binutils readelf and ELF Tool Chain readelf support -z to handle compressed sections (typically debug sections). From ELF Tool Chain's manpage:

     -z | --decompress
             Decompress contents of sections specified by -x or -p before
             displaying.  If the specified section is not compressed, it is
             displayed as is.

We are planning to migrate to LLVM's binutils-like tools and this is one issue identified during that process.
(FreeBSD bug reference https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258872)