Dear Khem Raj,

In message <CAMKF1sp8=orefknds00t-rxovvgwarautrzmnqvzdy13fxu...@mail.gmail.com> 
you wrote:
> 
> > -O2 causes much bigger memory footprint, so the code does not fit any
> > more in the memory map and/or flash sectors that are reserved for it.
> 
> Hmm interesting so we are living on edge here

Well, -O2 can mean some 30% bigger code size than -Os.  This hurts for
memory-footprint optimized code like a boot loader.  [It also hurts in
terms of exacution speed on most embedded systems...]

> Thanks for the info

You are welcome.

Best regards,

Wolfgang Denk

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