> > Major rehash of the register allocator. Fixes at least
> one problem:
> >
> > - clobbering: we shouldn't delete clobbered temps from the
> > assignment, because they might be read by this instruction.
>
> Ah yes. Another strange situation that doesn't happen in the beautiful
> PowerPC instruction set ;-).
> The code now looks nicer than before, but it fails when dealing with
> ccalls on PowerPC (the only place where clobbering ever happens around
> here). AFAICT, there are two things missing:
>
> * The spill instructions returned by saveClobberedTemps are discarded.
> * The clobbered reg seems to remain InBoth until after the
> instruction,
> so now load is generated when the temporary is needed again.
ITYM "no load is generated..." (that had me confused for a while!).
Yes, rigth on both counts. I'll commit fixes.
Cheers,
Simon
_______________________________________________
Cvs-ghc mailing list
[EMAIL PROTECTED]
http://www.haskell.org/mailman/listinfo/cvs-ghc
