need for instruction attributes (ia64)

[Jan Beulich]

>>> Richard Henderson <rth@redhat.com> 12.01.05 10:10:18 >>>
>On Wed, Jan 12, 2005 at 09:05:43AM +0100, Jan Beulich wrote:
>> How would I get the result of a splitter to be conditionally
executed,
>> then?
>
>It's matched to another define_insn pattern.
>Splits are entirely transformation templates.

Meaning that, under the implication that there won't be implicit
attempts to wrap a pre-exisiting cond_exec into another one, for
supporting .unc compares here (and perhaps elsewhere) one would need new
infrastructure to support a double layer (or other method of
combination) of cond_exec-s (depending on the predicate of the .unc
compare and its result predicate(s))... 

Jan