[PATCH] D152417: [AArch64] Add pipeline model for Neoverse N1

[Dave Green via Phabricator via llvm-commits]

dmgreen added a comment.

Thanks. Is that speed or time? I assume speed so higher is better?

I'm just asking because I had tested on the Noeverse-N1 hardware we have as it is easy to run. It has been fairly well setup to minimize noise, and noticed a higher time on x264 then I would have expected. It has reproduced multiple times, but there is a chance that it is just what I would call "layout noise", and the same code with slightly different options would give different results. If you don't see the same thing then it is probably OK. The other results all looked fine, all plus or minus a percent. The change in lbm I saw was smaller, for example, only 0.9%.


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https://reviews.llvm.org/D152417