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A few TODO remain in the code #17478

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gamazeps opened this issue Sep 23, 2014 · 0 comments · Fixed by #17479
Closed

A few TODO remain in the code #17478

gamazeps opened this issue Sep 23, 2014 · 0 comments · Fixed by #17479

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@gamazeps
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It seems that the convention is now to use FIXME instead of TODO, yet there are still a few TODO left (can be found with grep) in src/etc, src/libbacktrace and src/rt

gamazeps added a commit to gamazeps/rust that referenced this issue Sep 29, 2014
lnicola pushed a commit to lnicola/rust that referenced this issue Jul 11, 2024
Simplify some term search tactics

Working on the paper `@phijor` found that "Data constructor" tactic could be simplified quite a bit by running it only in the backwards direction. With n+1 rounds it has same coverage as previous implementation in n rounds, however the tactic it self is more simple and also potentially faster as there is less to do.

In a nutshell the idea is to only work with types in the wish-list rather than with any types.

Turns out it is quite a bit faster:

Before:
```
ripgrep:
Tail Expr syntactic hits: 238/1692 (14%)
Tail Exprs found: 1223/1692 (72%)
Term search avg time: 15ms

nalgebra:
Tail Expr syntactic hits: 125/3001 (4%)
Tail Exprs found: 2143/3001 (71%)
Term search avg time: 849ms
```

After
````
ripgrep:
Tail Expr syntactic hits: 246/1692 (14%)
Tail Exprs found: 1209/1692 (71%)
Term search avg time: 8ms

nalgebra:
Tail Expr syntactic hits: 125/3001 (4%)
Tail Exprs found: 2028/3001 (67%)
Term search avg time: 305ms
````

_Also removed niche optimization of removing scope defs from the search space as this wasn't helping much anyway and made code a bit more complex._
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