Perf: analyze & optimize #298
Description
An operation taking a lot of time is KeyedLoadIC_Megamorphic.
Resources:
- https://medium.com/blueeast/node-js-internals-and-how-to-write-faster-and-better-optimized-javascript-code-part-1-1a01a0661004
- https://stackoverflow.com/questions/23807805/why-is-mutating-the-prototype-of-an-object-bad-for-performance
Evolving analysis: https://catadev.org/private/analyze.html
Idea: calling makeJSComparable, and more generally creating new objects from previous ones is bad for performance.