RE: [avr-gcc-list] Add builtins in avr target.

[Weddington, Eric]

> -----Original Message-----
> From: 
> address@hidden 
> [mailto:address@hidden
> org] On Behalf Of Anatoly Sokolov
> Sent: Friday, April 04, 2008 2:51 PM
> To: address@hidden
> Subject: [avr-gcc-list] Add builtins in avr target.
> 
> Hello.
> 
> 
>   This patch add '__builtin_avr_swap', '__builtin_avr_sei' and
> '__builtin_avr_cli' builtins in avr backend. It will allow to 
> use 'SWAP',
> 'SEI' and 'CLI' instructions, without use inline assembly.
> 
>   I wish to add:
>     1. builtins for 'SLEEP' and 'WDR' instructions;
>     2. builtins for 'FMUL*' instructions;
>     3. builtin similarly to IAR '__delay_cycles';
>     4. builtin for 'DES' xmega instruction.
> 
>   Your suggestions?
> 

See GCC bug #21080:
<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21080>

Andy Hutchinson wrote a patch (attached to bug report) to fix this bug
which adds support for __builtin_return_address.

BTW, Andy has a *lot* of outstanding patches that needs review and
possible commit to AVR port. He has been fixing a lot of bugs. I have a
list if you need it.

Eric Weddington