[compiler-rt] [compiler-rt][ARM] Optimized mulsf3 and divsf3 (PR #161546)

[Simon Tatham via llvm-commits]

statham-arm wrote:

Ping! I haven't come back to this for a few weeks because I've been busy with other things, but it's been a while since it had any attention. @compnerd , you left review comments at the start of the month; are you happy with the updated version>

https://github.com/llvm/llvm-project/pull/161546