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If we build with `-Os` some vars are missing in backtraces and will be listed as `<optimized out>` - https://github.com/PCSX2/pcsx2/issues/5226#issuecomment-1036987320 ``` Optimize debugging experience. -Og 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. It is a better choice than -O0 for producing debuggable code because some compiler passes that collect debug information are disabled at -O0. Like -O0, -Og completely disables a number of optimization passes so that individual options controlling them have no effect. Otherwise -Og enables all -O1 optimization flags except for those that may interfere with debugging: ``` - https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html