------- Comment #3 from dorit at gcc dot gnu dot org 2007-07-24 13:05 -------
(In reply to comment #1)
> ... We actually had both options in the vectorizer for a while
> (guarded by ADJUST_IN_EPILOG hard-coded #define), however we didn't know how
> to
> choose between the two options (cost wise), so we just arbitrarily chose one.
> Now that we're starting to build a cost model we may try to evaluate which of
> the two options to generate.
for the record - this was the patch that removed the second option:
2007-04-18 Dorit Nuzman <[EMAIL PROTECTED]>
* tree-vect-transform.c (get_initial_def_for_reduction): Clean away
the unused code for reduction without adjust-in-epilog to simplify the
function.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32825
