phafu

I'd like to do some statistics over the machine code gcc generates, such as a histogram of used instructions, average volatile/preserved registers usage of functions etc. For now just x86_64 SysV-ABI would be enough.

However I'm not aware of any pre-existing tool that lets me easily do this. The options I currently see are either make gcc output assembly and write a parser for the GNU Assembler format (possibly by reusing the asm-parser of the compiler-explorer project), or write a tool that reads (disassembles) object files directly using elfutils.

Any hints, prior work, further ideas, links to useful resources, or any other kind of help would be much appreciated.