[chbot] GCC / Codesourcery #pragma for ARM Cortex M3

[Mark Atherton]

Dunno if anyone has the answer off the top of their head...

I need tight optimization around a small code block (can be made into 
a function if need be).

The main body (10k lines) has been tested without any optimization, 
so, I am loathed to change optimization for the whole system and then 
have to re-test.

Anyone know of an optimization pragma I can use just for this tight piece ?

I guess the other option is do-it-in-assembler, which isn't such a 
bad idea now I come to think of it. The M3 is such a lovely target...

Anyway, one step at a time (just trying to think of an M3 pun, maybe 
that is it :)

-Mark