Aliaksandr Kalenik ebb3d8025c LibJS: Get this from execution context for non-arrow functions ...

Allows to skip function environment allocation for non-arrow functions
if the only reason it is needed is to hold `this` binding.

The parser is changed to do following:
- If a function is an arrow function and uses `this` then all functions
  in a scope chain are marked to allocate function environment for
  `this` binding.
- If a function uses `new.target` then all functions in a scope chain
  are marked to allocate function environment.

`ordinary_call_bind_this()` is changed to put `this` value in execution
context when function environment allocation is skipped.

35% improvement in Octane/typescript.js
50% improvement in Octane/deltablue.js
19% improvement in Octane/raytrace.js

2024-05-22 18:30:13 +02:00

42 KiB

Raw Blame History

View Raw