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lcnr opened this issue Mar 13, 2025 · 0 comments
Open

lint/tidy check imports of rustc_type_ir and rustc_middle #138449

lcnr opened this issue Mar 13, 2025 · 0 comments
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A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. C-cleanup Category: PRs that clean code up or issues documenting cleanup. E-help-wanted Call for participation: Help is requested to fix this issue. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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lcnr commented Mar 13, 2025

rustc_middle reexports all of rustc_type_ir and should be preferred in case it is available. We should lint if a crate depends on both rustc_middle and rustc_type_ir and rewrite all existing uses of rustc_type_ir in such crates to use rustc_middle::ty instead.

cc @compiler-errors
@lcnr lcnr added C-cleanup Category: PRs that clean code up or issues documenting cleanup. E-help-wanted Call for participation: Help is requested to fix this issue. labels Mar 13, 2025
@rustbot rustbot added the needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. label Mar 13, 2025
@compiler-errors compiler-errors mentioned this issue Mar 13, 2025
Merged
@jieyouxu jieyouxu added A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. and removed needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. labels Mar 14, 2025
bors added a commit to rust-lang-ci/rust that referenced this issue Mar 14, 2025
@bors
Auto merge of rust-lang#138464 - compiler-errors:less-type-ir, r=lcnr
6fbc082 
Use `rustc_type_ir` directly less in the codebase

cc rust-lang#138449

This is a somewhat opinionated bundle of changes that will make working on rust-lang#138449 more easy, since it cuts out the bulk of the changes that would be necessitated by the lint. Namely:

1. Fold `rustc_middle::ty::fold` and `rustc_middle::ty::visit` into `rustc_middle::ty`. This is because we already reexport some parts of these modules into `rustc_middle::ty`, and there's really no benefit from namespacing away the rest of these modules's functionality given how important folding and visiting is to the type layer.
2. Rename `{Decodable,Encodable}_Generic` to `{Decodable,Encodable}_NoContext`[^why], change it to be "perfect derive" (`synstructure::AddBounds::Fields`), use it throughout `rustc_type_ir` instead of `TyEncodable`/`TyDecodable`.
3. Make `TyEncodable` and `TyDecodable` derives use `::rustc_middle::ty::codec::TyEncoder` (etc) for its generated paths, and move the `rustc_type_ir::codec` module back to `rustc_middle::ty::codec` :tada:.
4. Stop using `rustc_type_ir` in crates that aren't "fundamental" to the type system, namely middle/infer/trait-selection. This amounted mostly to changing imports from `use rustc_type_ir::...` to `use rustc_middle::ty::...`, but also this means that we can't glob import `TyKind::*` since the reexport into `rustc_middle::ty::TyKind` is a type alias. Instead, use the prefixed variants like `ty::Str` everywhere -- IMO this is a good change, since it makes it more regularized with most of the rest of the compiler.

[^why]: `_NoContext` is the name for derive macros with no additional generic bounds and which do "perfect derive" by generating bounds based on field types. See `HashStable_NoContext`.

I'm happy to cut out some of these changes into separate PRs to make landing it a bit easier, though I don't expect to have much trouble with bitrot.

r? lcnr
bors added a commit to rust-lang-ci/rust that referenced this issue Mar 15, 2025
@bors
Auto merge of rust-lang#138464 - compiler-errors:less-type-ir, r=lcnr
aa95b96 
Use `rustc_type_ir` directly less in the codebase

cc rust-lang#138449

This is a somewhat opinionated bundle of changes that will make working on rust-lang#138449 more easy, since it cuts out the bulk of the changes that would be necessitated by the lint. Namely:

1. Fold `rustc_middle::ty::fold` and `rustc_middle::ty::visit` into `rustc_middle::ty`. This is because we already reexport some parts of these modules into `rustc_middle::ty`, and there's really no benefit from namespacing away the rest of these modules's functionality given how important folding and visiting is to the type layer.
2. Rename `{Decodable,Encodable}_Generic` to `{Decodable,Encodable}_NoContext`[^why], change it to be "perfect derive" (`synstructure::AddBounds::Fields`), use it throughout `rustc_type_ir` instead of `TyEncodable`/`TyDecodable`.
3. Make `TyEncodable` and `TyDecodable` derives use `::rustc_middle::ty::codec::TyEncoder` (etc) for its generated paths, and move the `rustc_type_ir::codec` module back to `rustc_middle::ty::codec` :tada:.
4. Stop using `rustc_type_ir` in crates that aren't "fundamental" to the type system, namely middle/infer/trait-selection. This amounted mostly to changing imports from `use rustc_type_ir::...` to `use rustc_middle::ty::...`, but also this means that we can't glob import `TyKind::*` since the reexport into `rustc_middle::ty::TyKind` is a type alias. Instead, use the prefixed variants like `ty::Str` everywhere -- IMO this is a good change, since it makes it more regularized with most of the rest of the compiler.

[^why]: `_NoContext` is the name for derive macros with no additional generic bounds and which do "perfect derive" by generating bounds based on field types. See `HashStable_NoContext`.

I'm happy to cut out some of these changes into separate PRs to make landing it a bit easier, though I don't expect to have much trouble with bitrot.

r? lcnr
github-actions bot pushed a commit to rust-lang/miri that referenced this issue Mar 16, 2025
@bors
Auto merge of #138464 - compiler-errors:less-type-ir, r=lcnr
7bae54a 
Use `rustc_type_ir` directly less in the codebase

cc rust-lang/rust#138449

This is a somewhat opinionated bundle of changes that will make working on rust-lang/rust#138449 more easy, since it cuts out the bulk of the changes that would be necessitated by the lint. Namely:

1. Fold `rustc_middle::ty::fold` and `rustc_middle::ty::visit` into `rustc_middle::ty`. This is because we already reexport some parts of these modules into `rustc_middle::ty`, and there's really no benefit from namespacing away the rest of these modules's functionality given how important folding and visiting is to the type layer.
2. Rename `{Decodable,Encodable}_Generic` to `{Decodable,Encodable}_NoContext`[^why], change it to be "perfect derive" (`synstructure::AddBounds::Fields`), use it throughout `rustc_type_ir` instead of `TyEncodable`/`TyDecodable`.
3. Make `TyEncodable` and `TyDecodable` derives use `::rustc_middle::ty::codec::TyEncoder` (etc) for its generated paths, and move the `rustc_type_ir::codec` module back to `rustc_middle::ty::codec` :tada:.
4. Stop using `rustc_type_ir` in crates that aren't "fundamental" to the type system, namely middle/infer/trait-selection. This amounted mostly to changing imports from `use rustc_type_ir::...` to `use rustc_middle::ty::...`, but also this means that we can't glob import `TyKind::*` since the reexport into `rustc_middle::ty::TyKind` is a type alias. Instead, use the prefixed variants like `ty::Str` everywhere -- IMO this is a good change, since it makes it more regularized with most of the rest of the compiler.

[^why]: `_NoContext` is the name for derive macros with no additional generic bounds and which do "perfect derive" by generating bounds based on field types. See `HashStable_NoContext`.

I'm happy to cut out some of these changes into separate PRs to make landing it a bit easier, though I don't expect to have much trouble with bitrot.

r? lcnr
@lcnr lcnr mentioned this issue Mar 19, 2025
Merged
flip1995 pushed a commit to flip1995/rust-clippy that referenced this issue Mar 20, 2025
@bors
Auto merge of #138464 - compiler-errors:less-type-ir, r=lcnr
f357993 
Use `rustc_type_ir` directly less in the codebase

cc rust-lang/rust#138449

This is a somewhat opinionated bundle of changes that will make working on rust-lang/rust#138449 more easy, since it cuts out the bulk of the changes that would be necessitated by the lint. Namely:

1. Fold `rustc_middle::ty::fold` and `rustc_middle::ty::visit` into `rustc_middle::ty`. This is because we already reexport some parts of these modules into `rustc_middle::ty`, and there's really no benefit from namespacing away the rest of these modules's functionality given how important folding and visiting is to the type layer.
2. Rename `{Decodable,Encodable}_Generic` to `{Decodable,Encodable}_NoContext`[^why], change it to be "perfect derive" (`synstructure::AddBounds::Fields`), use it throughout `rustc_type_ir` instead of `TyEncodable`/`TyDecodable`.
3. Make `TyEncodable` and `TyDecodable` derives use `::rustc_middle::ty::codec::TyEncoder` (etc) for its generated paths, and move the `rustc_type_ir::codec` module back to `rustc_middle::ty::codec` :tada:.
4. Stop using `rustc_type_ir` in crates that aren't "fundamental" to the type system, namely middle/infer/trait-selection. This amounted mostly to changing imports from `use rustc_type_ir::...` to `use rustc_middle::ty::...`, but also this means that we can't glob import `TyKind::*` since the reexport into `rustc_middle::ty::TyKind` is a type alias. Instead, use the prefixed variants like `ty::Str` everywhere -- IMO this is a good change, since it makes it more regularized with most of the rest of the compiler.

[^why]: `_NoContext` is the name for derive macros with no additional generic bounds and which do "perfect derive" by generating bounds based on field types. See `HashStable_NoContext`.

I'm happy to cut out some of these changes into separate PRs to make landing it a bit easier, though I don't expect to have much trouble with bitrot.

r? lcnr
@rperier rperier mentioned this issue Apr 30, 2025
Merged
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Apr 30, 2025
@matthiaskrgr
Rollup merge of rust-lang#140516 - rperier:type-ir-to-type-middle, r=…
1e440ae 
…lcnr

Replace use of rustc_type_ir by rustc_middle

cc rust-lang#138449

I want to help on this issue. I have replaced all the rustc_type_ir uses by the equivalent type in rustc_middle.
DelayedSet is also re-exposed by rustc_middle.
rust-timer added a commit to rust-lang-ci/rust that referenced this issue Apr 30, 2025
@rust-timer
Unrolled build for rust-lang#140516
3935773 
Rollup merge of rust-lang#140516 - rperier:type-ir-to-type-middle, r=lcnr

Replace use of rustc_type_ir by rustc_middle

cc rust-lang#138449

I want to help on this issue. I have replaced all the rustc_type_ir uses by the equivalent type in rustc_middle.
DelayedSet is also re-exposed by rustc_middle.
@rperier rperier mentioned this issue May 1, 2025
Merged
GuillaumeGomez added a commit to GuillaumeGomez/rust that referenced this issue May 5, 2025
@GuillaumeGomez
Rollup merge of rust-lang#140559 - rperier:type-ir-to-type-middle, r=…
f403c92 
…compiler-errors

Removing rustc_type_ir in the rustc_infer codebase

cc rust-lang#138449

This is a second refactoring of rustc_type_ir to use rustc_middle instead, this time that's for rustc_infer
GuillaumeGomez added a commit to GuillaumeGomez/rust that referenced this issue May 5, 2025
@GuillaumeGomez
Rollup merge of rust-lang#140559 - rperier:type-ir-to-type-middle, r=…
224e3ca 
…compiler-errors

Removing rustc_type_ir in the rustc_infer codebase

cc rust-lang#138449

This is a second refactoring of rustc_type_ir to use rustc_middle instead, this time that's for rustc_infer
rust-timer added a commit to rust-lang-ci/rust that referenced this issue May 6, 2025
@rust-timer
Unrolled build for rust-lang#140559
bacfbd4 
Rollup merge of rust-lang#140559 - rperier:type-ir-to-type-middle, r=compiler-errors

Removing rustc_type_ir in the rustc_infer codebase

cc rust-lang#138449

This is a second refactoring of rustc_type_ir to use rustc_middle instead, this time that's for rustc_infer
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