https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116128
--- Comment #1 from mjr19 at cam dot ac.uk --- The same comment applies to maxval and minval, which vectorise with -Ofast only for -mavx2, although the answer will be independent of the ordering of the scalar min/max operations. In contrast, iall and iany do vectorise at -O3. For the sum and dot_product, one might well argue that, for most data, re-ordering to split the sum into partial sums, which gfortran does on -Ofast only, not -O3, will produce a more accurate result than doing the sum in-order, as well as being much faster.
