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rustc_borrowck memory management tweaks #131225

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merged 5 commits into from
Oct 7, 2024

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nnethercote
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Minor cleanups in rustc_borrowck relating to memory management.

r? @lqd

The `regioncx` and `borrow_set` fields can be references instead of
`Rc`. They use the existing `'a` lifetime. This avoids some heap
allocations and is a bit simpler.
It can own these two fields.
Either `&T` or `Rc<T>` is preferable.
By making it own two of its fields.
@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 Oct 4, 2024
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lqd commented Oct 7, 2024

@bors r+ rollup

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bors commented Oct 7, 2024

📌 Commit c69d174 has been approved by lqd

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 Oct 7, 2024
@@ -150,14 +150,14 @@ pub(crate) fn type_check<'a, 'tcx>(
infcx,
param_env,
implicit_region_bound,
universal_regions,
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@klensy klensy Oct 7, 2024

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Rc clone()'s better be Rc::clone, so whenever field refactored out of Rc, compiler will warn, instead of wasting clone()'s.

Actually, i want lint for it :-) : https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_ref_ptr

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@lqd lqd Oct 7, 2024

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I’m aware and prefer Rc::clone, but it’s fine until the lint is used.

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Submitted #131375, but is some discussion required before enabling it in CI?

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Seems likely

bors added a commit to rust-lang-ci/rust that referenced this pull request Oct 7, 2024
…kingjubilee

Rollup of 7 pull requests

Successful merges:

 - rust-lang#128721 (Don't allow the `#[pointee]` attribute where it doesn't belong)
 - rust-lang#130479 (skip in-tree compiler build for llvm-bitcode-linker if ci-rustc is on)
 - rust-lang#130899 (Couple of changes to make it easier to compile rustc for wasm)
 - rust-lang#131225 (`rustc_borrowck` memory management tweaks)
 - rust-lang#131351 (Remove valgrind test suite and support from compiletest, bootstrap and opt-dist)
 - rust-lang#131359 (Fix used_underscore_binding in rustc_serialize)
 - rust-lang#131367 (Mark Boxy as on vacation)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 9c4732a into rust-lang:master Oct 7, 2024
6 checks passed
@rustbot rustbot added this to the 1.83.0 milestone Oct 7, 2024
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Oct 7, 2024
Rollup merge of rust-lang#131225 - nnethercote:rustc_borrowck-mm, r=lqd

`rustc_borrowck` memory management tweaks

Minor cleanups in `rustc_borrowck` relating to memory management.

r? `@lqd`
@nnethercote nnethercote deleted the rustc_borrowck-mm branch October 7, 2024 21:19
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Oct 29, 2024
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5 participants