Ira, Thanks for the answer.
> The loop that got vectorized in the older revision is another loop > associated with the same source code line: Upon further investigation this loops is likely related to a temporary that have been removed in recent versions. Using the older revision with -Warray-temporaries gives: ... induct.f90:5057.30: xmin = minval(nodes(1,inductor_number(1:number_of_nodes))) 1 Warning: Creating array temporary at (1) ... not present in more recent revisions. Dominique