Unreviewed patch to tree-ssa-loop-ivopts.c

[Paul Schlie]

> From: Richard Sandiford <rsandifo@redhat.com>
> Note that uses of SFmode, etc., in libgcc2.[hc] don't really count.
> The c4x port doesn't use those *sf routines anyway.  It would be nice
> to generalise libgcc2.c so that the selection of routines is a bit
> less kludgy, but that's a general comment; it doesn't just apply to
> BITS_PER_UNIT != 8 considerations.

Thanks understood, as noted the earlier reply to Joseph; it just seemed
potentially more consistent to enable similarly sized objects to have the
same mode, as it seemed to simplified a number of things, but possibly not.