GHC Core question

[Tim Chevalier]

On 1/7/08, Neil Mitchell <ndmitchell at gmail.com> wrote:
> Hi
>
> > How are you printing out the Core?
>
> showSDoc $ ppr c
>
> where c :: [CoreBind]
>
> > It looks like the unique ids are
> > missing (you can see them if you pass the -ppr-debug flag, which can
> > be set using the API)
>
> I have now set the -ppr-debug flag, but that has no effect. It's not
> entirely surprising, as I guess setting the flag only applies through
> the GHC session, and this code is being run outside that. How can I
> print the output (to a file) using the unique id's?
>

Good point about the session, I forgot about that. It looks like you
can call showSDocDebug instead of showSDoc (see utils/Outputable.lhs),
which acts as if -dppr-debug is set, but I haven't actually tried it.

> Can I invoke CoreTidy using the GHC API?
>

Yes, but you'll need to grab a post-Dec-25 build if you haven't
already, since I added this recently. Once you have, see
compileToCoreSimplified in main/GHC.hs.

Cheers,
Tim

-- 
Tim Chevalier * http://cs.pdx.edu/~tjc * Often in error, never in doubt
"It's easy to consider women more emotional than men when you don't
consider rage to be an emotion." -- Brenda Fine