Disable size optimization (-0s) for package

[kofec]

Are there any news findings regarding optimization ? I just read @jeff post:

Comparative Throughput Testing Including NAT, SQM, WireGuard, and OpenVPN

Back on topic... These results are posted here rather than in the lead post as use of flow offload on master requires a patch to the sources, as well as that non-default compilation (-O2 vs. -Os) and settings (performance speed governor) were used. Multiple requests have been made to have OpenWrt adopt the "mainstream" -O2 optimization (or even the more aggressive -O3), though the project continues to use the -Os "Optimize for size" setting, even for devices that do not have image-size issues.…

And He mentioned about https://github.com/diizzyy/openwrt/commit/648711831477cf624c4d58e91a064de302e4813d
but In this post (above) it was mention that between -Os and O2 "with no noticeable improvement" .
What about GCC 7 vs GCC 9 ?