Rajkishore Barik <[EMAIL PROTECTED]> writes:
> Does anyone know of any document describing (in details) the reload phase
> of GCC?
There isn't one. The closest such document is
http://gcc.gnu.org/wiki/reload
which is accurate despite, or perhaps because of, starting out by
equating reload with Satan.
> I am planning to write a linear scan reload for GCC (one that does not
> take reg_renumber
> but takes instruction specific register allocation and move information).
> Can anyone point me
> to some existing code/literature for this in GCC?
There is none.
If you expect this pass to actually replace reload, then I advise you
to reconsider. That would be a hopeless task. Well, maybe you could
do it if you restrict yourself to a single architecture.
If you want to run this pass in between the register allocator and
reload, that would probably be doable. Of course, reload will then
muck up your decisions, and the resulting code will sometimes be worse
than what you get today. But it might be an interesting experiment.
Ian
