Rollup of 13 pull requests by jhpratt · Pull Request #159696 · rust-lang/rust

jhpratt · 2026-07-22T00:21:08Z

Successful merges:

Sync from portable simd 2026 07 20 #159582 (Sync from portable simd 2026 07 20)
Stabilize c-variadic function definitions #155697 (Stabilize c-variadic function definitions)
Fix splat v0 mangling #158890 (Fix splat v0 mangling)
debuginfo generation for unsafe binders #159614 (debuginfo generation for unsafe binders)
Remove early_exit closures #159647 (Remove early_exit closures)
define a Simd type in minicore #159656 (define a Simd type in minicore)
Add paths for linked associated items #156474 (Add paths for linked associated items)
Fix debuginfo argument when invoking LLBC linker #159211 (Fix debuginfo argument when invoking LLBC linker)
Refactor is_opsem_inhabited #159625 (Refactor is_opsem_inhabited)
Add more splat rust-call regression tests #159629 (Add more splat rust-call regression tests)
Remove cfg(not(no_global_oom_handling)) from the Drop impl of UniqueArcUninit #159652 (Remove cfg(not(no_global_oom_handling)) from the Drop impl of UniqueArcUninit)
Remove the blanket #![cfg_attr(test, allow(unused))] from bootstrap #159657 (Remove the blanket #![cfg_attr(test, allow(unused))] from bootstrap )
Add layout cycle hang regression test #159663 (Add layout cycle hang regression test)

Failed merges:

Bring runtime symbols statics on par with foreign functions #159527 (Bring runtime symbols statics on par with foreign functions)

the `float-cmp` and `num-traits` libraries don't (yet) support f16. Turns out we didn't really need much from them, just the ulps check. I've adapted the ulps check from miri instead

relevant for the cranelift backend, possibly other cases/targets too

Fix pointer API to match what was stabilized

We can do swizzles for 24, 32, 48 and 64 byte vectors by stacking multiple TBL instructions. See https://godbolt.org/z/PE95nrqjj for a comparison of the generated assembly.

Optimize `swizzle_dyn` for AArch64 with N > 16

`From` impls were already provided for the normal AArch64 ACLE vector types, but not for the x2,x3,x4 tuples of ACLE vectors. Rectify that. Also provide impls for vectors of `f16`, as I noticed they were missing.

For symmetry with `Mask::first_set`

Add `Mask::last_set` method

…mpls Provide `From` impls for AArch64 ACLE tuple types.

Use `impl` restrictions over hand-sealed traits

Optimize `swizzle_dyn` for LoongArch64 with N is 16 or 32

run `f16` float tests

…nelift backend

Previously LLBC's Linker implementation unconditionally added `--debug` to the linker invocation. This just became visible when 062ecd6 made LLBC no longer strip debug information unconditionally. Add the proper logic to LLBC's linker implementation to only invoke LLBC with `--debug` when debug-information should not be stripped.

…m-portable-simd-2026-07-20

…port

Remove the blanket `#![cfg_attr(test, allow(unused))]` from bootstrap - Originally added by rust-lang#138704 --- This blanket allow was hiding several unused imports and items in test-only code. It has been replaced with a number of narrower ensures. We can also drop the `pretty_assertions` dev-dependency, which turns out to have been unused.

…t-cycle-hang-test, r=lqd Add layout cycle hang regression test Fixes rust-lang#153205 The issue was already fixed rust-lang#153205 (comment)

jhpratt · 2026-07-22T00:21:26Z

@bors r+ rollup=never p=5

@bors try jobs=dist-various-1,test-various,x86_64-gnu-aux,x86_64-gnu-llvm-21-3,x86_64-msvc-1,aarch64-apple,x86_64-mingw-1,i686-msvc-*

rust-bors · 2026-07-22T00:21:28Z

📌 Commit 59c79fb has been approved by jhpratt

It is now in the queue for this repository.

rust-bors · 2026-07-22T00:21:35Z

⌛ Trying commit 59c79fb with merge 4b31fde…

To cancel the try build, run the command @bors try cancel.

Workflow: https://github.com/rust-lang/rust/actions/runs/29880002381

Rollup of 13 pull requests try-job: dist-various-1 try-job: test-various try-job: x86_64-gnu-aux try-job: x86_64-gnu-llvm-21-3 try-job: x86_64-msvc-1 try-job: aarch64-apple try-job: x86_64-mingw-1 try-job: i686-msvc-*

rust-log-analyzer · 2026-07-22T00:55:53Z

The job x86_64-gnu-llvm-21-3 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

To only update this specific test, also pass `--test-args lint/runtime-symbols-unix.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1/bin/rustc" "/checkout/tests/ui/lint/runtime-symbols-unix.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1" "--target=x86_64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/lint/runtime-symbols-unix" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "--edition=2021"
stdout: none
--- stderr -------------------------------
warning: the feature `c_variadic` has been stable since 1.99.0-nightly and no longer requires an attribute to enable
##[warning]  --> /checkout/tests/ui/lint/runtime-symbols-unix.rs:7:12
   |
---
   |         ^^^^^^^^^^^^^^^
   |
   = note: expected `unsafe extern "C" fn(i32, *const c_void, usize) -> isize`
           found    `unsafe extern "C" fn()`
   = help: either fix the signature or remove any attributes like `#[unsafe(no_mangle)]`, `#[unsafe(export_name = "write")]`, or `#[link_name = "write"]`

error: invalid definition of the runtime `close` symbol used by the standard library
##[error]  --> /checkout/tests/ui/lint/runtime-symbols-unix.rs:26:5
   |
LL |     pub static close: () = ();
---
   |         ^^^^^^^^^^^^^^
   |
   = note: expected `unsafe extern "C" fn(*mut c_void)`
           found    `unsafe extern "C" fn()`
   = help: either fix the signature or remove any attributes like `#[unsafe(no_mangle)]`, `#[unsafe(export_name = "free")]`, or `#[link_name = "free"]`

error: invalid definition of the runtime `exit` symbol used by the standard library
##[error]  --> /checkout/tests/ui/lint/runtime-symbols-unix.rs:39:9
   |
LL |         pub fn exit();
---

warning: suspicious definition of the runtime `open` symbol used by the standard library
##[warning]  --> /checkout/tests/ui/lint/runtime-symbols-unix.rs:46:9
   |
LL |         pub fn open(path: *const u8, oflag: usize, ...) -> c_int;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: expected `unsafe extern "C" fn(*const i8, i32, ...) -> i32`
           found    `unsafe extern "C" fn(*const u8, usize, ...) -> i32`
   = help: either fix the signature or remove any attributes like `#[unsafe(no_mangle)]`, `#[unsafe(export_name = "open")]`, or `#[link_name = "open"]`
---
   |
LL |         pub fn free(ptr: *const u8);
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: expected `unsafe extern "C" fn(*mut c_void)`
           found    `unsafe extern "C" fn(*const u8)`
   = help: either fix the signature or remove any attributes like `#[unsafe(no_mangle)]`, `#[unsafe(export_name = "free")]`, or `#[link_name = "free"]`
   = help: allow this lint if the signature is compatible

warning: suspicious definition of the runtime `exit` symbol used by the standard library
##[warning]  --> /checkout/tests/ui/lint/runtime-symbols-unix.rs:52:9
   |

rust-log-analyzer · 2026-07-22T00:58:21Z

The job aarch64-gnu-llvm-21-1 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

To only update this specific test, also pass `--test-args lint/runtime-symbols-unix.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/lint/runtime-symbols-unix.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/lint/runtime-symbols-unix" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "--edition=2021"
stdout: none
--- stderr -------------------------------
warning: the feature `c_variadic` has been stable since 1.99.0-nightly and no longer requires an attribute to enable
##[warning]  --> /checkout/tests/ui/lint/runtime-symbols-unix.rs:7:12
   |
---
   |         ^^^^^^^^^^^^^^^
   |
   = note: expected `unsafe extern "C" fn(i32, *const c_void, usize) -> isize`
           found    `unsafe extern "C" fn()`
   = help: either fix the signature or remove any attributes like `#[unsafe(no_mangle)]`, `#[unsafe(export_name = "write")]`, or `#[link_name = "write"]`

error: invalid definition of the runtime `close` symbol used by the standard library
##[error]  --> /checkout/tests/ui/lint/runtime-symbols-unix.rs:26:5
   |
LL |     pub static close: () = ();
---
   |         ^^^^^^^^^^^^^^
   |
   = note: expected `unsafe extern "C" fn(*mut c_void)`
           found    `unsafe extern "C" fn()`
   = help: either fix the signature or remove any attributes like `#[unsafe(no_mangle)]`, `#[unsafe(export_name = "free")]`, or `#[link_name = "free"]`

error: invalid definition of the runtime `exit` symbol used by the standard library
##[error]  --> /checkout/tests/ui/lint/runtime-symbols-unix.rs:39:9
   |
LL |         pub fn exit();
---

warning: suspicious definition of the runtime `open` symbol used by the standard library
##[warning]  --> /checkout/tests/ui/lint/runtime-symbols-unix.rs:46:9
   |
LL |         pub fn open(path: *const u8, oflag: usize, ...) -> c_int;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: expected `unsafe extern "C" fn(*const u8, i32, ...) -> i32`
           found    `unsafe extern "C" fn(*const u8, usize, ...) -> i32`
   = help: either fix the signature or remove any attributes like `#[unsafe(no_mangle)]`, `#[unsafe(export_name = "open")]`, or `#[link_name = "open"]`
---
   |
LL |         pub fn free(ptr: *const u8);
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: expected `unsafe extern "C" fn(*mut c_void)`
           found    `unsafe extern "C" fn(*const u8)`
   = help: either fix the signature or remove any attributes like `#[unsafe(no_mangle)]`, `#[unsafe(export_name = "free")]`, or `#[link_name = "free"]`
   = help: allow this lint if the signature is compatible

warning: suspicious definition of the runtime `exit` symbol used by the standard library
##[warning]  --> /checkout/tests/ui/lint/runtime-symbols-unix.rs:52:9
   |

rust-bors · 2026-07-22T00:58:50Z

PR #155697, which is a member of this rollup, was unapproved.

This rollup was thus unapproved.

jhpratt · 2026-07-22T01:00:29Z

@bors try cancel

rust-bors · 2026-07-22T01:00:33Z

Try build cancelled. Cancelled workflows:

https://github.com/rust-lang/rust/actions/runs/29880002381

folkertdev and others added 30 commits April 12, 2026 13:26

implement our own ulps check to test f16

eb7cb89

the `float-cmp` and `num-traits` libraries don't (yet) support f16. Turns out we didn't really need much from them, just the ulps check. I've adapted the ulps check from miri instead

disable f16 tests when not target_has_reliable_f16_math

f40da91

relevant for the cranelift backend, possibly other cases/targets too

Fix pointer API to match what was stabilized

c4f3110

Merge pull request rust-lang#526 from rust-lang/update-pointer-api

94a3ba2

Fix pointer API to match what was stabilized

Optimize swizzle_dyn for AArch64 with N > 16

beafe83

We can do swizzles for 24, 32, 48 and 64 byte vectors by stacking multiple TBL instructions. See https://godbolt.org/z/PE95nrqjj for a comparison of the generated assembly.

Merge pull request rust-lang#528 from Kmeakin/km/aarch64-dyn-swizzle

be090a7

Optimize `swizzle_dyn` for AArch64 with N > 16

Provide From impls for AArch64 ACLE tuple types.

b16ee62

`From` impls were already provided for the normal AArch64 ACLE vector types, but not for the x2,x3,x4 tuples of ACLE vectors. Rectify that. Also provide impls for vectors of `f16`, as I noticed they were missing.

Use impl restrictions over hand-sealed traits

61ae55e

Add Mask::last_set method

ae33abe

For symmetry with `Mask::first_set`

Merge pull request rust-lang#532 from Kmeakin/km/simd-last-set

a27ae1d

Add `Mask::last_set` method

Merge pull request rust-lang#530 from Kmeakin/km/aarch64-tuple-from-i…

8e3bfb0

…mpls Provide `From` impls for AArch64 ACLE tuple types.

Merge pull request rust-lang#529 from jhpratt/master

d7a525f

Use `impl` restrictions over hand-sealed traits

Optimize swizzle_dyn for LoongArch64 with N is 16 or 32

30bdfe3

Merge pull request rust-lang#533 from heiher/swizzle-dyn-loong64

44a03e6

Optimize `swizzle_dyn` for LoongArch64 with N is 16 or 32

Merge pull request rust-lang#518 from folkertdev/test-float-f16

5b7c840

run `f16` float tests

Merge of rust-lang/portable-simd#520: disable f16 tests for the cra…

7d497cc

…nelift backend

Stabilize c_variadic

05da80d

rustdoc-json: add paths for linked associated items

0a63dc6

address suggested nits

08fb51a

test with IDs as suggested

c78d0a7

Add splat mangling bug tests (flaky?)

da5e0cf

Implement v0 symbol mangling for splat

cbb2169

Doc splat mangling in the reference

553dbd7

Fix typo in symbol-mangling/v0.md

a34aad0

Merge commit '7d497cca160ae6062acc1a2db838667f83c0b58e' into sync-fro…

b010737

…m-portable-simd-2026-07-20

fix feature gate

e09b887

remove now-dead Sealed trait

b045903

fix simd tests that use without_provenance{_mut}

7629861

disable portable_simd miri test that needs additional intrinsic sup…

f32f69b

…port

jhpratt added 2 commits July 21, 2026 20:21

Rollup merge of rust-lang#159663 - chenyukang:yukang-fix-153205-layou…

59c79fb

…t-cycle-hang-test, r=lqd Add layout cycle hang regression test Fixes rust-lang#153205 The issue was already fixed rust-lang#153205 (comment)

rust-bors Bot added the rollup A PR which is a rollup label Jul 22, 2026

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 Jul 22, 2026

jhpratt mentioned this pull request Jul 22, 2026

Stabilize c-variadic function definitions #155697

Merged

jhpratt closed this Jul 22, 2026

rust-bors Bot added the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Jul 22, 2026

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 Jul 22, 2026

jhpratt deleted the rollup-cuL0oZw branch July 22, 2026 00:58

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Rollup of 13 pull requests#159696

Rollup of 13 pull requests#159696
jhpratt wants to merge 53 commits into
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