python3-debug: Should we use -Og rather than -O0?

[Petr Viktorin]

Hi,
I've been looking at documentation of these GCC flags:

-O0
     Reduce compilation time and make debugging produce the expected 
results. This is the default

-Og
     Optimize debugging experience. -Og enables optimizations that do 
not interfere with debugging. It should be the optimization level of 
choice for the standard edit-compile-debug cycle, offering a reasonable 
level of optimization while maintaining fast compilation and a good 
debugging experience.

(from https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html)

Currently, we use -O0 for the debug build of Python, but it seems that 
-Og would actually be a better option. Is there something I'm missing?