Run Benchmark on my computer, seems the performance issues still exists.

                           confidence improvement accuracy (*)    (**)   (***)
 misc/freelist.js n=100000        ***    -92.46 %      ±1.94% ±2.61% ±3.46%

Be aware that when doing many comparisons the risk of a false-positive
result increases. In this case there are 1 comparisons, you can thus
expect the following amount of false-positive results:
  0.05 false positives, when considering a   5% risk acceptance (*, **, ***),
  0.01 false positives, when considering a   1% risk acceptance (**, ***),
  0.00 false positives, when considering a 0.1% risk acceptance (***)

Benchmark CI: https://ci.nodejs.org/view/Node.js%20benchmark/job/benchmark-node-micro-benchmarks/784/

Looks like the benchmark CI crashed: https://ci.nodejs.org/view/Node.js%20benchmark/job/benchmark-node-micro-benchmarks/783/console

If I had to guess, I’d say V8 is doing some inlining shenanigans when it detects a push or pop method on an ordinary array with %Array.prototype% in its [[Prototype]] internal slot.

By inlining the methods in #37649, I hope to make FreeList faster and resilient to mutation of %Array.prototype%.pop and %Array.prototype%.push

This pull request has been marked as stale due to 90 days of inactivity.
It will be automatically closed in 30 days if no further activity occurs. If this is still relevant, please leave a comment or update it to keep it open.

Codecov Report

❌ Patch coverage is 93.18182% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.14%. Comparing base (b2a024b) to head (ff89dbe).

@@            Coverage Diff             @@
##             main   #36600      +/-   ##
==========================================
- Coverage   90.15%   90.14%   -0.02%     
==========================================
  Files         744      744              
  Lines      242542   242582      +40     
  Branches    45690    45700      +10     
==========================================
+ Hits       218672   218682      +10     
- Misses      15362    15394      +32     
+ Partials     8508     8506       -2     

... and 31 files with indirect coverage changes

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