Call for compiler help/advice: atomic builtins for v3

[Paolo Carlini]

Ulrich Drepper wrote:

>Andrew Pinski wrote:
>  
>
>>You might not care about anything except for GNU/Linux but GCC has to care
>>to some point.
>>    
>>
>The important point is that this (and similar things like vector
>instructions) is an issues which cannot be solved adequately with an
>one-size-fits-all mechanism.  It requires platform specific solutions
>even if this means more maintenance effort.  Equalizing is not
>acceptable since it punishes the more evolved platforms.
>
Indeed, I think that if try to explain to some "lay" people that we
cannot expand inline the *existing* atomic builtins on i686 for the sake
of i386, I think they would laugh at us. Frankly.

Paolo.