roc/crates/compiler/types
Ayaz Hafiz 2d57aa2170
Use thread-local buffer for occurs check seen variables
This materially improves performance for programs that are
recursion-heavy (as most Roc programs will likely be).

```
$ hyperfine '/tmp/roc-old check examples/cli/cli-platform/Arg.roc' '/tmp/roc-new check examples/cli/cli-platform/Arg.roc' --warmup 10
Benchmark 1: /tmp/roc-old check examples/cli/cli-platform/Arg.roc
  Time (mean ± σ):      53.8 ms ±   1.3 ms    [User: 87.3 ms, System: 10.8 ms]
  Range (min … max):    52.2 ms …  60.4 ms    51 runs

Benchmark 2: /tmp/roc-new check examples/cli/cli-platform/Arg.roc
  Time (mean ± σ):      45.0 ms ±   1.6 ms    [User: 59.4 ms, System: 11.3 ms]
  Range (min … max):    42.6 ms …  49.8 ms    60 runs

Summary
  '/tmp/roc-new check examples/cli/cli-platform/Arg.roc' ran
    1.20 ± 0.05 times faster than '/tmp/roc-old check examples/cli/cli-platform/Arg.roc'
```

The time spent in `occurs` during checking for `Arg` drops from 50% to 23%.
2022-11-15 17:52:12 -06:00
..
src Use thread-local buffer for occurs check seen variables 2022-11-15 17:52:12 -06:00
Cargo.toml more workspace dependencies 2022-11-13 16:10:02 +01:00