http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47860
--- Comment #3 from vincenzo Innocente <vincenzo.innocente at cern dot ch>
2011-02-24 08:24:31 UTC ---
Thanks Ira for the quick answer.
For what concern
if (N <= 0)
that was the reason to use "unsigned int" which apparently cause vectorization
not to work.
As we are on the subject:
do you plan to support autovectorization of idioms such "location of max"?
such as
float const * lmin2(float const * __restrict__ b, float const * __restrict__ e)
{
float const * ret = b++;
float amin = *(ret);
for(;b!=e; ++b)
if (amin>(*b)) {
ret = b;
amin = *ret;
}
return ret;
}
or equivalent.
It is used very often (for instance in pivoting code).
vincenzo
