libgcc2 and MIN_UNITS_PER_WORD on ia64

[Alexandre Oliva]

On Apr  2, 2001, Jim Wilson <wilson@cygnus.com> wrote:

> In the Red Hat tools group, what we do is define HOST_WIDE_INT to
> "long long" instead of "long" for cross compilers from 32-bit hosts
> to 64-bit targets.  This is done via an ugly config.gcc hack.  This
> makes the cross gcc run slower, but the resulting code will be much
> closer to what you would get with a native compiler. [...] What it
> really needs is someone to clean it up and make it more presentable
> so that we can put it in the FSF tree.

FWIW, I've just fixed (but not installed yet; will do momentarily) at
least some of the bugs in codegen and in the ppc back-end, that
prevented the adoption of the patch that automatically selected `long
long' for HOST_WIDE_INT if the target has 64-bits wide longs, which
obviates the ugly hack we currently have.

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist    *Please* write to mailing lists, not to me