http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57328
Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|fortran |tree-optimization
--- Comment #9 from Marc Glisse <glisse at gcc dot gnu.org> ---
The difficulty seems to be with vectorizing an AND or OR of 2 conditions.
a<b || b unord b leaves control flow around
a<b | b unord b complains that bit-precision arithmetic is not supported
The second one in particular looks like a limitation in the vectorizer that
would be nice to lift. I get the same issue with a loop using a[i]<0&b[i]<=0,
it isn't related to unord in particular.
