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rust/compiler/rustc_middle
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Guillaume Gomez fad3039124
Rollup merge of #135383 - BoxyUwU:cov_tag_ptr, r=compiler-errors 
De-abstract tagged ptr and make it covariant

In #135272 I needed to use a tagged ptr in `hir::TyKind` in order to not regress hir type sizes. Unfortunately the existing `CopyTaggedPtr` abstraction is insufficient as it makes the `'hir` lifetime invariant.

I spent some time trying to keep existing functionality while making it covariant but in the end I realised that actually we dont use *any* of this code *anywhere* in rustc, so I've just removed everything and replaced it with a much less general abstraction that is suitable for what I need in #135272.

Idk if anyone has a preference for just keeping all the abstractions here in case anyone needs them in the future 🤷‍♀️
2025-01-12 23:08:58 +01:00
..
src Rollup merge of #135383 - BoxyUwU:cov_tag_ptr, r=compiler-errors 2025-01-12 23:08:58 +01:00
Cargo.toml best_blame_constraint: prioritize blaming interesting-seeming constraints 2025-01-06 16:12:11 -08:00
messages.ftl Move some code from Compiler::enter to GlobalCtxt::finish 2024-11-09 17:55:39 +00:00
README.md

README.md

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