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Make TyCtxt::coroutine_layout take coroutine's kind parameter #123021

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merged 3 commits into from
Mar 27, 2024

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@compiler-errors compiler-errors commented Mar 25, 2024

For coroutines that come from coroutine-closures (i.e. async closures), we may have two kinds of bodies stored in the coroutine; one that takes the closure's captures by reference, and one that takes the captures by move.

These currently have identical layouts, but if we do any optimization for these layouts that are related to the upvars, then they will diverge -- e.g. #120168 (comment).

This PR relaxes the assertion I added in #121122, and instead make the TyCtxt::coroutine_layout method take the coroutine_kind_ty argument from the coroutine, which will allow us to differentiate these by-move and by-ref bodies.

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rustbot commented Mar 25, 2024

r? @cjgillot

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@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 Mar 25, 2024
@compiler-errors compiler-errors changed the title Always use tcx.coroutine_layout() over calling tcx.optimized_mir().coroutine_layout() directly Make TyCtxt::coroutine_layout take coroutine's kind parameter Mar 25, 2024
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ok, cc @dingxiangfei2009 this should fix the problem.

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oli-obk commented Mar 27, 2024

r? @oli-obk

@bors r+

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bors commented Mar 27, 2024

📌 Commit 9bda9ac has been approved by oli-obk

It is now in the queue for this repository.

@bors bors 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 Mar 27, 2024
bors added a commit to rust-lang-ci/rust that referenced this pull request Mar 27, 2024
…llaumeGomez

Rollup of 6 pull requests

Successful merges:

 - rust-lang#121843 (Implement `-L KIND=`@RUSTC_BUILTIN/...`)`
 - rust-lang#122860 (coverage: Re-enable `UnreachablePropagation` for coverage builds)
 - rust-lang#123021 (Make `TyCtxt::coroutine_layout` take coroutine's kind parameter)
 - rust-lang#123024 (CFI: Enable KCFI testing of run-pass tests)
 - rust-lang#123083 (lib: fix some unnecessary_cast clippy lint)
 - rust-lang#123116 (rustdoc: Swap fields and variant documentations)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit bffeb05 into rust-lang:master Mar 27, 2024
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@rustbot rustbot added this to the 1.79.0 milestone Mar 27, 2024
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Mar 27, 2024
Rollup merge of rust-lang#123021 - compiler-errors:coroutine-layout-lol, r=oli-obk

Make `TyCtxt::coroutine_layout` take coroutine's kind parameter

For coroutines that come from coroutine-closures (i.e. async closures), we may have two kinds of bodies stored in the coroutine; one that takes the closure's captures by reference, and one that takes the captures by move.

These currently have identical layouts, but if we do any optimization for these layouts that are related to the upvars, then they will diverge -- e.g. rust-lang#120168 (comment).

This PR relaxes the assertion I added in rust-lang#121122, and instead make the `TyCtxt::coroutine_layout` method take the `coroutine_kind_ty` argument from the coroutine, which will allow us to differentiate these by-move and by-ref bodies.
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5 participants