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<title>rust/compiler/rustc_codegen_llvm, branch stable</title>
<subtitle>https://github.com/rust-lang/rust
</subtitle>
<id>http://git.dreamy.place/mirrors/rust/atom?h=stable</id>
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<updated>2025-08-29T02:55:20+00:00</updated>
<entry>
<title>Revert "fix(debuginfo): disable overflow check for"</title>
<updated>2025-08-29T02:55:20+00:00</updated>
<author>
<name>Wesley Wiser</name>
<email>wwiser@gmail.com</email>
</author>
<published>2025-08-29T02:55:20+00:00</published>
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<id>urn:sha1:161e29dc8486e69f8e02c1587a1abf141a413987</id>
<content type='text'>
This reverts commit 49eda8edd5c99e4c65c687fff0b8e194eb339a23.
</content>
</entry>
<entry>
<title>Rollup merge of #144726 - jdonszelmann:move-attr-data-structures, r=lcnr</title>
<updated>2025-07-31T15:19:40+00:00</updated>
<author>
<name>Jana Dönszelmann</name>
<email>jonathan@donsz.nl</email>
</author>
<published>2025-07-31T15:19:40+00:00</published>
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<id>urn:sha1:26c28ee2ef1402f59cadf03417b05cdb892e7940</id>
<content type='text'>
merge rustc_attr_data_structures into rustc_hir

this move was discussed on zulip: [#t-compiler &gt; attribute parsing rework @ 💬](https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/attribute.20parsing.20rework/near/528530091)

Many PRs in the attribute rework depend on this move.
</content>
</entry>
<entry>
<title>Rollup merge of #144712 - nnethercote:dedup-num-types, r=fmease</title>
<updated>2025-07-31T15:19:39+00:00</updated>
<author>
<name>Jana Dönszelmann</name>
<email>jonathan@donsz.nl</email>
</author>
<published>2025-07-31T15:19:39+00:00</published>
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<id>urn:sha1:5712d50648a60cb49f16f57fa5e126b5d053c612</id>
<content type='text'>
Deduplicate `IntTy`/`UintTy`/`FloatTy`.

There are identical definitions in `rustc_type_ir` and `rustc_ast`. This commit removes them and places a single definition in `rustc_ast_ir`. This requires adding `rust_span` as a dependency of `rustc_ast_ir`, but means a bunch of silly conversion functions can be removed.

r? `@fmease`
</content>
</entry>
<entry>
<title>remove rustc_attr_data_structures</title>
<updated>2025-07-31T12:19:27+00:00</updated>
<author>
<name>Jana Dönszelmann</name>
<email>jana@donsz.nl</email>
</author>
<published>2025-07-31T09:00:40+00:00</published>
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<id>urn:sha1:e1d3ad89c7a2ad4f5d944a7fee1298ffe8c99645</id>
<content type='text'>
</content>
</entry>
<entry>
<title>Tidy up `Cargo.toml` files.</title>
<updated>2025-07-31T09:58:04+00:00</updated>
<author>
<name>Nicholas Nethercote</name>
<email>n.nethercote@gmail.com</email>
</author>
<published>2025-07-31T03:15:49+00:00</published>
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<id>urn:sha1:704f2ca17224dc1d208423c675313521b0f49645</id>
<content type='text'>
- Add some missing `tidy-alphabetical-*` markers.
- Remove some unnecessary blank lines.
</content>
</entry>
<entry>
<title>Rollup merge of #144663 - Zalathar:empty-span, r=petrochenkov</title>
<updated>2025-07-31T05:42:00+00:00</updated>
<author>
<name>Stuart Cook</name>
<email>Zalathar@users.noreply.github.com</email>
</author>
<published>2025-07-31T05:42:00+00:00</published>
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<id>urn:sha1:5c123c25e36121730634aa59f8a66a5469d4d73f</id>
<content type='text'>
coverage: Re-land "Enlarge empty spans during MIR instrumentation"

This allows us to assume that coverage spans will only be discarded during codegen in very unusual situations.

---

This seemingly-simple change has a rather messy history:
- rust-lang/rust#140847
- rust-lang/rust#141650
- rust-lang/rust#144298
- rust-lang/rust#144480

Since then, a number of related changes have landed that should make it reasonable to try again:
- rust-lang/rust#144530
- rust-lang/rust#144560
- rust-lang/rust#144616

In particular, we have multiple fixes/mitigations, and a confirmed regression test for the original bug that is not triggered by re-landing the changes in this PR.
</content>
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<entry>
<title>Rollup merge of #144232 - xacrimon:explicit-tail-call, r=WaffleLapkin</title>
<updated>2025-07-31T05:42:00+00:00</updated>
<author>
<name>Stuart Cook</name>
<email>Zalathar@users.noreply.github.com</email>
</author>
<published>2025-07-31T05:42:00+00:00</published>
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<id>urn:sha1:8628b78f24c01026d01b82afd3ec91a2019fe647</id>
<content type='text'>
Implement support for `become` and explicit tail call codegen for the LLVM backend

This PR implements codegen of explicit tail calls via `become` in `rustc_codegen_ssa` and support within the LLVM backend. Completes a task on (https://github.com/rust-lang/rust/issues/112788). This PR implements all the necessary bits to make explicit tail calls usable, other backends have received stubs for now and will ICE if you use `become` on them. I suspect there is some bikeshedding to be done on how we should go about implementing this for other backends, but it should be relatively straightforward for GCC after this is merged.

During development I also put together a POC bytecode VM based on tail call dispatch to test these changes out and analyze the codegen to make sure it generates expected assembly. That is available [here](https://github.com/xacrimon/tcvm).
</content>
</entry>
<entry>
<title>coverage: Re-land "Enlarge empty spans during MIR instrumentation"</title>
<updated>2025-07-30T03:17:05+00:00</updated>
<author>
<name>Zalathar</name>
<email>Zalathar@users.noreply.github.com</email>
</author>
<published>2025-05-04T04:09:52+00:00</published>
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<id>urn:sha1:2e6f4a59226fd82c526df0f61fefc6fea44e7750</id>
<content type='text'>
This allows us to assume that coverage spans will only be discarded during
codegen in very unusual situations.
</content>
</entry>
<entry>
<title>Rollup merge of #144407 - godzie44:godzie44/fix_dwarf_inconsistency, r=wesleywiser</title>
<updated>2025-07-29T10:19:49+00:00</updated>
<author>
<name>Stuart Cook</name>
<email>Zalathar@users.noreply.github.com</email>
</author>
<published>2025-07-29T10:19:49+00:00</published>
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<id>urn:sha1:b3962e88114a5f633011d8670f318e1c20ba41b6</id>
<content type='text'>
fix(debuginfo): disable overflow check for recursive non-enum types

Commit b10edb4 introduce an overflow check when generating debuginfo for expanding recursive types. While this check works correctly for enums, it can incorrectly prune valid debug information for structures.

For example see rust-lang/rust#143241 (https://github.com/rust-lang/rust/issues/143241#issuecomment-3073721477). Furthermore, for structures such check does not make sense, since structures with recursively expanding types simply will not compile (there is a `hir_analysis_recursive_generic_parameter` for that).

closes rust-lang/rust#143241
</content>
</entry>
<entry>
<title>Rename impl_of_method -&gt; impl_of_assoc</title>
<updated>2025-07-28T14:54:53+00:00</updated>
<author>
<name>Cameron Steffen</name>
<email>cam.steffen94@gmail.com</email>
</author>
<published>2025-07-25T00:09:05+00:00</published>
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<id>urn:sha1:b43164cef643957f9e1cd20dffdbb736f3f3c298</id>
<content type='text'>
</content>
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