On Wed, Nov 24, 2010 at 3:33 PM, Diego Novillo <dnovi...@google.com> wrote: > On Wed, Nov 24, 2010 at 09:17, Richard Guenther > <richard.guent...@gmail.com> wrote: > >> And we don't want to pay the overhead of hookization every target >> dependent constant just for the odd guys who want multi-target >> compilers that have those constants differing. > > I would like to know how much this overhead really amounts to. Long > term, I would like to see back ends become shared objects that can be > selected with a -fbackend=... flag or some such. Removing > configure/compile-time macros and other hardwired data is instrumental > to that.
Well. Long term. Hookizing constants is easy - before proceeding with those (seemingly expensive) ones I'd like to see all the _hard_ target macros converted into hooks. If there are only things like BITS_PER_UNIT left we can talk again. Richard. > > Diego. >
