RE: [avr-gcc-list] Re: char to int promotion in bitwise operators

[Weddington, Eric]

> -----Original Message-----
> From: 
> address@hidden 
> [mailto:address@hidden
> org] On Behalf Of David Brown
> Sent: Monday, August 24, 2009 7:04 AM
> To: address@hidden
> Subject: [avr-gcc-list] Re: char to int promotion in bitwise operators
> 

> Has anyone versed in avr-gcc development looked at the new plugin 
> architecture in gcc 4.5 ?  

Yes. IMHO, it's a waste of time.


> To my limited understanding, it is 
> (or will 
> be) possible for a plugin to change the pass order:
> 
> <http://gcc.gnu.org/onlinedocs/gccint/Plugins.html>
> 
> The hope with the plugins is that it will make it easier and 
> faster to 
> develop gcc, 

Both I doubt.


<snip> 

> I would hope it is also possible to use plugins to allow 
> extra peephole 
> optimisations to be written and tested externally to gcc, 
> allowing much 
> easier and faster testing than rebuilding gcc for each change. 
> Well-proven peepholes could then be moved back into the main gcc code 
> for efficiency.

The issue has nothing to do with how fast or slow it is to write gcc code. The 
issue is having people willing to take the time to actually do anything.