Enable PGO

[psfinaki]

Description

Fixes #12636
Fixes #13328

Benchmarks

I published FSI and FSC locally for net 8.0 and win-64 runtime, then ran them against an empty F# script.

FSI results

Before:

First run: ~2.9 s
Later runs: ~1.4 s

After:

First run: ~1.7 s
Later runs: ~0.9 s

FSC results

Before:

First run: ~2.9 s
Later runs: ~1.9 s

After:

First run: ~1.8 s
Later runs: ~1.0 s

---

The improvements are about 40% in all cases!

Checklist

• Test cases added
• Performance benchmarks added in case of performance changes

[github-actions]

✅ No release notes required

[psfinaki]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[vzarytovskii]

We shouldn't be producing our own profiles, but consume ones which are produced for us, and which we consume via darc

[vzarytovskii]

@EgorBo we don't really want to do the profile generation ourselves, can't we just consume what you're publishing already for fsi and contribute some tests for the fsc?

[EgorBo]

@EgorBo we don't really want to do the profile generation ourselves, can't we just consume what you're publishing already for fsi and contribute some tests for the fsc?

I guess it's up to you, I'd also recommend consuming the MIBC from nuget and use the same workflow that we use in dotnet/runtime where training is done in a separate repo. I thought that you decided to do the training here in this repo, if you don't then I'd also vote for just consuming the MIBC from the nuget

[vzarytovskii]

@EgorBo we don't really want to do the profile generation ourselves, can't we just consume what you're publishing already for fsi and contribute some tests for the fsc?

I guess it's up to you, I'd also recommend consuming the MIBC from nuget and use the same workflow that we use in dotnet/runtime where training is done in a separate repo. I thought that you decided to do the training here in this repo, if you don't then I'd also vote for just consuming the MIBC from the nuget

Yeah, I'd say it would be easier for us to consume ready to use profiles, in case if something changes in generating them, we don't have to adjust ours

[psfinaki]

Closing in favor of #17317