What optimizations are included in -Og?

[Eli Zaretskii]

Could someone please tell which optimizations are turned on by the -Og
switch?  The GCC manual lists the optimization flags turned on by -O1,
-O2, -O3, -Os, and -Ofast, but keeps silent about -Og.

Is there any documentation or some other place where this information
can be found?

Thanks in advance.

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