Optimisation

[Vovachess]

I noticed that directive #opt does not bring optimisation.
I use PIC18F252 and have code up to 32K.
If I determine directive #opt 1..9 I get no code optimisation but If I write #opt10 I get 10% optimisation. As I see #opt 10 is not define in CCS as optimisation value but it brings results.
Strange that other values give no results.
Does anybody can comment that?

[C-H Wu]

3.188 Readme.txt

New PIC18 optimization has been added. To use the new optimization
add:
#opt 10
or
#opt 11
These levels of optimization have not been fully tested.
-----------------------------------------------------------------
Although #opt 10 did save more than 10% code space, however,
it crashed my program. The program still run, but, some RAM is
unexpectly overwritten, which is very very hard to debug.

So, be careful with #opt 10. I will wait until 3.199 comes out.

[Vovachess]

Thanks for explanation.
Lets wait until 3.199 comes out.
I have no problem with #opt 10. Programm works good. I have big code (20-25K) and 10 gives me some space more.
I will test 11