It's pretty reliable in reality, C compilers are actually quite predictible. The only meaningful changes compilation flags do is add/remove basic blocks. That'

It's pretty reliable in reality, C compilers are actually quite predictible. The only meaningful changes compilation flags do is add/remove basic blocks. That's also mainly how malware reverse manages to "hunt" APT families, by finding meaningful little patterns in the instructions and look for code reuse in other binaries :D