[PATCH] D143162: [AArch64] Add PredictableSelectIsExpensive feature for the Neoverse V1

Tue Mar 28 00:56:36 PDT 2023

dmgreen added a comment.

In D143162#4219795 <https://reviews.llvm.org/D143162#4219795>, @aleksandr.popov wrote:

> Thanks, guys!
> @dmgreen could you please clarify, did you run benchmarks with PredictableSelectIsExpensive only or did you use 75% prediction rate threshold as well?

Only with PredictableSelectIsExpensive, keeping the default threshold. Without any PGO data it might be difficult to change the predication rate to something so low.

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https://reviews.llvm.org/D143162