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Jacob Pratt dcf1134386
Rollup merge of #136270 - nnethercote:rm-NamedVarMap, r=jackh726 
Remove `NamedVarMap`.

`NamedVarMap` is extremely similar to `ResolveBoundVars`. The former contains two `UnordMap<ItemLocalId, T>` fields (obscured behind `ItemLocalMap` typedefs). The latter contains two
`SortedMap<ItemLocalId, T>` fields. We construct a `NamedVarMap` and then convert it into a `ResolveBoundVars` by sorting the `UnordMap`s, which is unnecessary busywork.

This commit removes `NamedVarMap` and constructs a `ResolveBoundVars` directly. `SortedMap` and `NamedVarMap` have slightly different perf characteristics during construction (e.g. speed of insertion) but this code isn't hot enough for that to matter.

A few details to note.
- A `FIXME` comment is removed.
- The detailed comments on the fields of `NamedVarMap` are copied to `ResolveBoundVars` (which has a single, incorrect comment).
- `BoundVarContext::map` is renamed.
- `ResolveBoundVars` gets a derived `Default` impl.

r? `@jackh726`
2025-01-31 00:25:36 -05:00
..
src Rollup merge of #136270 - nnethercote:rm-NamedVarMap, r=jackh726 2025-01-31 00:25:36 -05:00
Cargo.toml best_blame_constraint: prioritize blaming interesting-seeming constraints 2025-01-06 16:12:11 -08:00
messages.ftl Add TooGeneric variant to LayoutError and emit Unknown one 2025-01-27 00:37:34 +01:00
README.md

README.md

For more information about how rustc works, see the rustc dev guide.