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Merge #9206
9206: minor: Speed up fst items lookup during completions r=SomeoneToIgnore a=SomeoneToIgnore

Part of https://github.com/rust-analyzer/rust-analyzer/issues/7542

A number of profile calls added for `import_on_the_fly` contents.
Before:
<img width="606" alt="Screenshot 2021-06-11 at 00 19 13" src="https://user-images.githubusercontent.com/2690773/121598998-22321e80-ca4b-11eb-9a3d-dc9cb2936705.png">

After:
<img width="859" alt="Screenshot 2021-06-11 at 00 19 27" src="https://user-images.githubusercontent.com/2690773/121599022-2a8a5980-ca4b-11eb-82b6-13ab0ed56d58.png">

As a result, low hanging fruit was spotted: crazy amount of `fst_path` calls. Reducing that won ~200ms in the `import_on_the_fly @ sel` case in the `integrated_completion_benchmark`:

<img width="861" alt="Screenshot 2021-06-11 at 00 19 38" src="https://user-images.githubusercontent.com/2690773/121599277-7d641100-ca4b-11eb-8667-53206994de27.png">

I'm not sure how to proceed with the remaining `???` marks in such methods as `collect_import_map` though: there's nothing but library calls in cycles, but maybe I'll come up with something later.

Co-authored-by: Kirill Bulatov <mail4score@gmail.com>
2021-06-10 21:28:14 +00:00
.cargo xtask: replace "lint" command by a simply cargo alias 2021-03-14 13:36:45 +01:00
.github Merge #8427 2021-05-03 13:37:12 +00:00
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bench_data Add benchmark test for mbe 2021-02-25 05:47:13 +08:00
crates Reduce fst_path calls 2021-06-11 00:10:09 +03:00
docs Further clarification 2021-06-07 14:50:03 +02:00
editors/code Revert "Merge #9177" 2021-06-08 15:31:36 +03:00
lib Intern GenericParams 2021-04-05 03:50:10 +02:00
xtask Use HTTPS for clippy lint JSON 2021-06-07 10:40:12 +03:00
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Cargo.lock Make MemoryUsage work on Windows 2021-06-10 14:06:35 +02:00
Cargo.toml minor: reenable incremental test builds 2021-05-31 12:15:40 +05:00
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