Re: [avr-gcc-list] Overlong interrupt vector table

[Richard F]

Now I understand the reason for the "extra" table entries, I was 
thinking that the jump table solution would be the smallest, so I didn't 
think there was any likely code size improvement.  But using 
-fno-jump-tables option does make the code very slightly smaller in my 
case (just 4 bytes).

I think it would be helpful in future versions if the compiler could 
output a separate table and name it, like it does for PROGMEM tables. 
Then it's clear what's in each table.  Is that possible?


Anatoly Sokolov wrote:
> Hi 
>
> Richard F wrote:
> >  So doesn't look  like any more optimisation to be had there!
>
> Sorry. I has not understood your phrase.
>
>  If you consider that the "jump table"  optimisation is not effective for your project, you can 
> disable it with the "-fno-jump-tables" switch. The  target specific  switch 
> "-mno-tablejump" should be removed from GCC 4.5.
>
> Anatoly.