------- Comment #5 from rguenth at gcc dot gnu dot org 2009-01-23 15:36 -------
So,
4) The vectorized version sucks because we have to use peeling for niters
because we need to unroll the loop once and cannot apply SLP here.
Q1: does SLP work with reductions at all?
Q2: does SLP do pattern recognition?
First of all we would need to recognize a complex reduction as a single
vectorized reduction. Second we need to vectorize the complex multiplication
with SLP, feeding the reduction with one resulting complex vector.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37021
