Re: Constraints validation in expand phase

[srimeruva at cse dot iitb dot ac dot in]

I am trying to modify gcc-source such that constraints validation will be
done in expand phase. So, I need to know about reload phase and
where(about functions) constraints validation happens in reload phase. If
any one did any work on exploring reload phase already. please tell me
about that, so that I can use that and save some time.

> Is it possible to change gcc-source, such that validation and changing
> instructions accordingly to satisfy constraints, in expansion phase itself
> using pseudo registers information,etc. If so, can anyone give some idea
> about how it is possible.
>