AW: [avr-gcc-list] register allocation - something not right

[Björn Haase]

Hi,

there are three different series that one can tell the compiler to use when 
allocating registers. You can select them by -morder1 and -morder2.

I think they are also documented in the info manual pages next to the 
target-specific options like -mmcu , etc. . The manual pages actually have 
only a very course information. Rather use info gcc instead of man gcc.

My experience is, that using these switches can have significant effect on
the code efficiency. The default value seems to be good when dealing mainly
with 16 bit integer variables. When working frequently with 32 bit ints try 
-morder1 or -morder2.


BTW: Is there something like a simulavrxx home page?

Yours,

Björn