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Move LateParamRegion to rustc_type_ir - #160986

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Jamesbarford:chore/move-late-param-region
Aug 17, 2026
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Move LateParamRegion to rustc_type_ir#160986
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Jamesbarford:chore/move-late-param-region

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@Jamesbarford Jamesbarford commented Aug 12, 2026 •
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Move LateParamRegion to rustc_type_ir. As per feedback, I created a TrivialLiftImpls! mirroring rustc_middle's variant which is creates an identity function for lift_to_interner(...).

Spun off from; #160509

r? @lcnr

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Aug 12, 2026
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Jamesbarford force-pushed the chore/move-late-param-region branch from aab6014 to 3103e42 Compare August 12, 2026 14:27
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lcnr
lcnr reviewed Aug 12, 2026
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Comment thread compiler/rustc_type_ir/src/sty/mod.rs Outdated
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minor question, otherwise r=me

cc @ada4a @ChayimFriedman2

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ChayimFriedman2 commented Aug 12, 2026

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I explicitly said that I don't want to move those to rustc_type_ir. Our implementation of those is different and expected to diverge more.

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ChayimFriedman2 commented Aug 12, 2026

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Oh I only said about EarlyParamRegion, but this is the same, as well as the bound regions:

Moving methods is good, but I don't want to move EarlyParamRegion. rust-analyzer uses a different representation (a def id instead of Symbol name), and we'd like to change it further (only an index).

#160220 (comment)

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lcnr commented Aug 12, 2026

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hm, alright 🤔 I guess only move LateParamRegion but keep LateParaMRegionKind as an assoc type then?

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lcnr commented Aug 12, 2026

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and we should add comments to all associated items of Interner which should be different between rustc and r-a so that we don't try to uplift them in the future. Remembering comments on github threads is not ideal xd

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Jamesbarford force-pushed the chore/move-late-param-region branch from 3103e42 to 3d2dad1 Compare August 13, 2026 08:43
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nits, then r=me

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Jamesbarford force-pushed the chore/move-late-param-region branch from 3d2dad1 to 0919d8e Compare August 13, 2026 09:14
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@bors r=lcnr

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@Jamesbarford: 🔑 Insufficient privileges: not in review users

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@bors r+ rollup

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📌 Commit 0919d8e has been approved by lcnr

It is now in the queue for this repository.

@rust-bors rust-bors Bot added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Aug 13, 2026
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lqd commented Aug 13, 2026

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The warnings will need to be fixed

@bors r-

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lcnr commented Aug 13, 2026

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@bors delegate+ unless it's more involved to fix CI

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This pull request was unapproved.

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@rust-bors rust-bors Bot removed the S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. label Aug 13, 2026
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Unknown argument "unless". Did you mean to use @bors tryorreview``? Run @bors help or go to https://bors.rust-lang.org/help to see available commands.

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@bors delegate+

but r lcnr instead of me ofc despite what the bot will say

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✌️ @Jamesbarford, you can now approve this pull request!

If @lqd told you to "r=me" after making some further change, then please make that change and post @bors r=lqd.

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Jamesbarford force-pushed the chore/move-late-param-region branch from 0919d8e to a80c8e5 Compare August 14, 2026 08:10
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@bors r+ rollup

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📌 Commit 5073c07 has been approved by lcnr

It is now in the queue for this repository.

🌲 The tree is currently closed for pull requests below priority 5. This pull request will be tested once the tree is reopened.

Reason for tree closure: github outage

@rust-bors rust-bors Bot added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Aug 17, 2026
JonathanBrouwer added a commit to JonathanBrouwer/rust that referenced this pull request Aug 17, 2026
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Rollup merge of rust-lang#160986 - Jamesbarford:chore/move-late-param…
f2956bc 
…-region, r=lcnr

Move `LateParamRegion` to `rustc_type_ir`

Move `LateParamRegion` to `rustc_type_ir`. As per feedback, I created a `TrivialLiftImpls!` mirroring `rustc_middle`'s variant which is creates an identity function for `lift_to_interner(...)`.

Spun off from; rust-lang#160509

r? @lcnr
This was referenced Aug 17, 2026
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rust-bors Bot pushed a commit that referenced this pull request Aug 17, 2026
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Auto merge of #161256 - JonathanBrouwer:rollup-WuI2sWX, r=JonathanBro…
8fa1c96 
…uwer

Rollup of 12 pull requests

Successful merges:

 - #161221 (`rust-analyzer` subtree update)
 - #161232 (Subtree sync for rustc_codegen_cranelift)
 - #160058 (atomic volatile: add intrinsics)
 - #161206 (Library lock file update)
 - #160905 (implement <IpAddr, SocketAddr>::unspecified_from())
 - #160986 (Move `LateParamRegion` to `rustc_type_ir`)
 - #161145 (Remove references to the obsolete `try-perf` branch)
 - #161197 (citool: update rust crates)
 - #161225 (Add regression test for lint panic on nested generic with default type param)
 - #161229 (rustc_target: couple AArch64 LLVM and cfg pauthtest ABIs)
 - #161230 (rename `#[rustc_dump_predicates]` to `#[rustc_dump_clauses]`)
 - #161237 (Remove jdno from infra-ci rotation)
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rust-bors Bot merged commit eae9eff into rust-lang:main Aug 17, 2026
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@rustbot rustbot added this to the 1.100.0 milestone Aug 17, 2026
rust-bors Bot pushed a commit that referenced this pull request Aug 17, 2026
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Unrolled build for #160986
2412f8f 
Rollup merge of #160986 - Jamesbarford:chore/move-late-param-region, r=lcnr

Move `LateParamRegion` to `rustc_type_ir`

Move `LateParamRegion` to `rustc_type_ir`. As per feedback, I created a `TrivialLiftImpls!` mirroring `rustc_middle`'s variant which is creates an identity function for `lift_to_interner(...)`.

Spun off from; #160509

r? @lcnr
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