Comment 13 for bug 1638695

Here are the results of the comparative tests I ran :

https://docs.google.com/spreadsheets/d/1MyNBPVZlBeic1OLqVKe_bcPk2deO_pQs9trIfOFefM0/edit#gid=2034603487

It confirms the assumptions but unfortunately, rebuilding 2.7.12 without the -fstack-protector-strong leads to worse performances than the stock 2.7.12 build. I'm continuing my investigations.