Wow, Linaro. that's a name I haven't heard in a while. They were the ones to optimize Android builds during the IceCreamSandwich days and just last day I was wondering if there were any third party optimization project still out there. All the best to them.

https://libreddit.kavin.rocks/r/Android/comments/usuym/linaro_build_optimizations_that_can_make_ics_30/