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RE: [avr-gcc-list] string initialization using "" and { }

From: Weddington, Eric
Subject: RE: [avr-gcc-list] string initialization using "" and { }
Date: Thu, 28 May 2009 00:00:54 -0600


> -----Original Message-----
> From: 
> address@hidden 
> [mailto:address@hidden
> org] On Behalf Of Jan Waclawek
> Sent: Thursday, May 28, 2009 10:45 AM
> To: Joerg Wunsch; address@hidden
> Subject: Re: [avr-gcc-list] string initialization using "" and { }
> Joerg,
> I am painfully aware of the consequence of avr-gcc sharing 
> most of its codebase with a compiler primarily aimed at the 
> "big" computers. IMHO it's a pity that the time and energy of 
> volunteers did not went into the avr port of SDCC, which is 
> maybe a more adequate, albeit certainly less mature, 
> background for an mcu-specific compiler.
> However, I still believe, that RFEs exist to bring everyday 
> problems of mere users into the more competent developers' 
> attention. Certainly an esoteric and complex problem is more 
> attractive target for a volunteer work, but my hopes are, the 
> volunteers want to see their effort also to bring fruit to 
> others - who might then return ther share  perhaps in some other way.
> To be specific, as 1-, 2- and 4-byte array initialisers are 
> compiled in an optimal ldi/st way, and e.g. 3-bytes are not, 
> I assume this is an optimisation performed in the 
> avr-specific backend, to reduce the overhead when using 
> initialised char-short-long. That's IMHO the place where a 
> bit more work might bring benefit.
> The string initialiser *might* be a different issue, I see that.

Patches welcome.

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