JITs do PGO all the time. It’s their bread and butter. | Hacker News

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		hinkley on Oct 23, 2022 \| parent \| context \| favorite \| on: How Rust 1.64 became faster on Windows JITs do PGO all the time. It’s their bread and butter.

pjmlp on Oct 23, 2022 [–]

Nowadays they also save PGO across executions, so that they don't always start from zero.

The most modern ones that is (Java, .NET, Android).

hinkley on Oct 24, 2022 | [–]

I don’t know if V8 does between runs but it seems to share something between subprocesses. There is commentary in the Node Worker docs about turning it off/on.

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