SPEC 456.hmmer vectorization question

Steve Ellcey sellcey@cavium.com
Mon Mar 6 22:37:00 GMT 2017


I was looking at the spec 456.hmmer benchmark and this email string
from Jeff Law and Micheal Matz:

  https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01970.html

and was wondering if anyone was looking at what more it would take
for GCC to vectorize the loop in P7Viterbi.  There is a big performance
win to be had here if it can be done but the alias checking needed
seems rather extensive.

Steve Ellcey
sellcey@cavium.com



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