Comment 30 for bug 2001932

The performance part was just my attempt at imagining what could possibly go wrong. As it turns out, I hadn't seen that upstream had the exact same concern and so did microbenchmarks on the patch before accepting it. Sadly, those benchmarks aren't designed to run against installed libraries, they expect the full build tree to be available.

I looked at the bug and patch history of the affected routines, and haven't seen any report of performance regression.

The benchmarks in bug 1999551 were explicitly designed for the arm64 architecture, and so don't apply here.