[PATCH] D26855: New unsafe-fp-math implementation for X86 target

[Andrew V. Tischenko via Phabricator via llvm-commits]

avt77 added a comment.

In https://reviews.llvm.org/D26855#630341, @davide wrote:

> I'll let Simon decide but these numbers are iffy. I can't necessarily conclude your patch increases compile time but I can't conclude anything else either. In particular, the stock clang measurement have a variance of 20% between consecutive runs, so I have very little faith in the numbers collected.
>  Rafael recent('ish)ly published a set of suggestions/knob to turn on to get relatively stable numbers on a Linux machine. I'm also pretty sure the topic of how to get {reliable numbers, numbers you can have faith in} has been discussed multiple times (look at the archives, Sean has generally pretty informative posts/insights on the topic).


Could you give me a reference to the info? Of course I'll try to find it myself but with your help it could be faster.


https://reviews.llvm.org/D26855