Re: [avr-gcc-list] AVR-GCC 4.3.2 producing larger output than AVR-GCC 4.1.2 with the same source and options (-Os)

[Bernard Fouché]

Hi.

Did you try with:

-finline-limit=10
-fno-if-conversion
-mcall-prologues

I ran into similar problems with code size and these options made the 
code fit in a bootloader area (however my bootloader is much bigger 
thant 512 bytes)

I've also seen that EEPROM related function calls were inlined each 
time, so I wrote a couple of wrapper functions to avoid this inlining.

 Bernard

DLC wrote:
> I've noticed that too.  My Arduino bootloader fits into the 512 byte 
> boot section when compiled with avr-gcc 3.4, but doesn't when compiled 
> with avr-gcc 4.3.
>
> You've found an even closer gap with the jump between 4.1 and 4.3.
>
> DLC