splitting add instructions

[Paulo J. Matos]

On 19/07/11 16:36, Richard Henderson wrote:
>> But I am still confused as to how GCC matches them. Is *_flags any
>> special name GCC loops for (doubtful)?
>
> No, and as you can see from the leading "*" in the name, the
> name is not actually visible as a pattern.
>

Thought so... :)

> As an experiment, please read the comment at the start of the
> compare-elim.c file.  If you still do not understand how the
> patch works, that suggests the documentation needs improvement.
>
>
I did try to find the file that implements the pass but unsuccessfully. 
That's the one.

Great explanation in the comment header. Thank you, everything is 
clearer now.

Cheers,

-- 
PMatos