gh-101632: Add a RETURN_CONST instruction

[penguin-wwy]

• Issue: Add return const instruction #101632

[iritkatriel]

Do you see a difference in any benchmarks?

[penguin-wwy]

I am executing pyperformance, please wait :)

[penguin-wwy]

@iritkatriel I update the pyperformance result in issue
#101632 (comment)

[iritkatriel]

@iritkatriel I update the pyperformance result in issue
#101632 (comment)

Thanks, I'll try to replicate on our benchmark machine.

[iritkatriel]

@iritkatriel I update the pyperformance result in issue
#101632 (comment)

Thanks, I'll try to replicate on our benchmark machine.

Also came out 1% faster.

Results are here.

[penguin-wwy]

@iritkatriel I update the pyperformance result in issue
#101632 (comment)

Thanks, I'll try to replicate on our benchmark machine.

Also came out 1% faster.

Results are here.

Thanks. It turned out a little better than I expected.

[iritkatriel]

LGTM

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @iritkatriel for commit afba682 🤖

If you want to schedule another build, you need to add the :hammer: test-with-buildbots label again.

[iritkatriel]

The "s390x Fedora Refleaks PR" buildbot is broken (for a few months at least). All other test runs were successful.