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

From: Rolf Ebert
Subject: Re: [avr-gcc-list] Add builtins in avr target.
Date: Sat, 05 Apr 2008 16:06:19 +0200
User-agent: Thunderbird (Windows/20080213)

Anatoly Sokolov schrieb:
  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?

If you add these built-ins I'd need your help to teach the Ada F-E how to use them. I am quite OK with the current solution. It seems more flexible to me if I can modify the code at the library level and don't have to resort to compiler patches.


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