Rollup of 12 pull requests - #163208

JonathanBrouwer · 2026-09-23T11:43:29Z

Successful merges:

Properly implement the gpu-kernel ABI for amdgpu #162177 (Properly implement the gpu-kernel ABI for amdgpu)
std: Update wasip3 crate dependency #163168 (std: Update wasip3 crate dependency)
Cleanup offload build steps #163179 (Cleanup offload build steps)
Remove unused StashKey::UnderscoreForArrayLengths #163194 (Remove unused StashKey::UnderscoreForArrayLengths)
rename direct_const_arg! to gca! #163198 (rename direct_const_arg! to gca!)
Remove suggestion_for_allocator_api #163205 (Remove suggestion_for_allocator_api)
document #[rustc_dyn_incompatible_trait] #162497 (document #[rustc_dyn_incompatible_trait])
regression test for unconstrained const args #162702 (regression test for unconstrained const args)
Enhance mutable closure suggestions with as_mut() support #163191 (Enhance mutable closure suggestions with as_mut() support)
Fix Typo in std::sys::process::unix::unsupported::wait_status Docs #163192 (Fix Typo in std::sys::process::unix::unsupported::wait_status Docs)
Remove DiagInner::sort_span #163196 (Remove DiagInner::sort_span)
Fix flt2dec build on 16-bit targets #163197 (Fix flt2dec build on 16-bit targets)

Keeping it up-to-date and resolving minor issues with it.

…onsuming it anymore

…tation

It's a field that can be used for sorting diagnostics. By default it is set to the primary span. It's only used for `BorrowckDiagnosticsBuffer`. This commit removes it and adds a `sort_span` to each diagnostic recorded in `BorrowckDiagnosticsBuffer`. This avoids various other pieces of code having to deal with it.

Both will be used by the amdgpu target to implement the `gpu-kernel` ABI. `address_space` specifies the address space of an indirect argument. `AmdgpuKernelArg` translates to LLVM’s byref, which is similar to on_stack/byval, however, there is no extra copy made, the pointer may not point to the stack but can point to some other address space, and the passed argument should not be modified. byval and byref are mutually exclusive, so change on_stack to an enum with the new states, Pointer (none), OnStack and AmdgpuKernelArg.

Add support to pass structs, arrays and vectors to amdgpu kernels. Scalars and vectors are taken by value, aggregates are passed by byref pointers. Structs containing a single scalar/vector are handled like a scalar. Judging from clang tests, nvptx seems to do somewhat the same, just using byval instead of byref: https://github.com/llvm/llvm-project/blob/3a8affeef4da19d39191aac316e189eca3214a8c/clang/test/CodeGenCUDA/kernel-args.cu I tested a couple of the lit test signatures on real hardware and it seems to work fine. Given the relatively simple implementation, I hope this amount of testing is enough (the C calling convention seems like a worse fit for Rust’s current ABI code, it’s still giving me headaches).

It's no longer ever used for stashing, so the code looking for it is dead. It became dead in PR 141610 when `generic_arg_infer` was stabilized and `[T; _]` became valid.

Co-authored-by: Boxy <rust@boxyuwu.dev>

Properly implement the gpu-kernel ABI for amdgpu Add support to pass structs, arrays and vectors to amdgpu kernels. Scalars and vectors are taken by value, aggregates are passed by byref pointers. Structs containing a single scalar/vector are handled like a scalar. Judging from clang tests, nvptx seems to do somewhat the same, just using byval instead of byref: https://github.com/llvm/llvm-project/blob/e4e18dba3d77f4a3eea58bcc9ccae5a5498ede7c/clang/test/CodeGenCUDA/kernel-args.cu I tested a couple of the lit test signatures on real hardware and it seems to work fine. Given the relatively simple implementation, I hope this amount of testing is enough (the C calling convention seems like a worse fit for Rust’s current ABI code, it’s still giving me headaches). This adds two members to `PassMode::Indirect`. `address_space` specifies the address space of an on_stack/byval or by_ref pointer argument. `by_ref` translates to LLVM’s byref, which is similar to on_stack/byval, however, there is no extra copy made, the pointer may not point to the stack but can point to some other address space, and the passed argument should not be modified. Both are used by the amdgpu target to implement the `gpu-kernel` ABI. Tracking issue for the `gpu-kernel` ABI: rust-lang#135467 Tracking issue for the amdgpu target: rust-lang#135024

…Titor std: Update `wasip3` crate dependency Keeping it up-to-date and resolving minor issues with it.

Cleanup offload build steps We used to generate a couple of artifacts only because clang offload tooling required them. Now that we fully control the build steps on the Rust side without clang tooling, we can remove most of them. I'll make a follow-up PR afterwards to also remove device.bin artifacts and pass the normal rustc outputs of the device compilation pass. r? oli-obk

@BoxyUwU

…ForArrayLengths, r=BoxyUwU Remove unused `StashKey::UnderscoreForArrayLengths` It's no longer ever used for stashing, so the code looking for it is dead. It became dead in rust-lang#141610 when `generic_arg_infer` was stabilized and `[T; _]` became valid. r? @BoxyUwU

@BoxyUwU

rename direct_const_arg! to gca! Also re-export it from `std`, and make most tests `use std::gca;` rather than writing out `core::` every time the macro is called. Part of the design rework discussed in Zulip [#project-const-generics > talkies at last @ 💬](https://rust-lang.zulipchat.com/#narrow/channel/260443-project-const-generics/topic/talkies.20at.20last/near/620368825) r? @BoxyUwU

@nia-e

…nnethercote Remove `suggestion_for_allocator_api` It's dead code since rust-lang#156882 cc @nia-e

…, r=ShoyuVanilla document `#[rustc_dyn_incompatible_trait]`

…strained-const-args, r=BoxyUwU regression test for unconstrained const args Closes rust-lang#146906

…re-suggestion, r=nnethercote Enhance mutable closure suggestions with as_mut() support This PR changed `can_use_as_ref` to support `as_mut` when `as_ref` is not proper.

Fix Typo in `std::sys::process::unix::unsupported::wait_status` Docs Noticed while collecting data on conditional compilation for potential aliasing (see [Zulip](https://rust-lang.zulipchat.com/#narrow/channel/219381-t-libs/topic/Using.20.60build.2Ers.60.20for.20cfg.20aliases.20in.20.60std.60/with/625458363) for details) that this attribute was missing its closing brace. Extremely trivial, might as well fix it!

@lqd

…, r=lqd Remove `DiagInner::sort_span` It's a field that can be used for sorting diagnostics. By default it is set to the primary span. It's only used for `BorrowckDiagnosticsBuffer`. This commit removes it and adds a `sort_span` to each diagnostic recorded in `BorrowckDiagnosticsBuffer`. This avoids various other pieces of code having to deal with it. r? @lqd

…bit, r=tgross35 Fix flt2dec build on 16-bit targets Closes rust-lang#163158. Fixes build breakage rust-lang#162879 on the two 16-bit targets, `avr-none` and `msp430-none-elf`, by including `target_pointer_width = "16"` in all the cfg attributes for the u32 implementations for bignum and flt2dec.

JonathanBrouwer · 2026-09-23T11:43:39Z

@bors r+ p=5

Trying commonly failed jobs
@bors try jobs=dist-various-1,test-various,test-x86_64-gnu-aux,test-x86_64-gnu-llvm-21-3,test-x86_64-msvc-1,test-aarch64-apple-1,test-aarch64-apple-2,test-x86_64-mingw-1,test-i686-msvc,test-armhf-gnu

rust-bors · 2026-09-23T11:43:42Z

📌 Commit 1ce8a26 has been approved by JonathanBrouwer

It is now in the queue for this repository.

Rollup of 12 pull requests try-job: dist-various-1 try-job: test-various try-job: test-x86_64-gnu-aux try-job: test-x86_64-gnu-llvm-21-3 try-job: test-x86_64-msvc-1 try-job: test-aarch64-apple-1 try-job: test-aarch64-apple-2 try-job: test-x86_64-mingw-1 try-job: test-i686-msvc try-job: test-armhf-gnu

rust-bors · 2026-09-23T14:41:17Z

☀️ Try build successful (CI)
Build commit: 21081f0 (21081f0c835788a2285de742bc9bd5b79fdca16c)
Base parent: 52d0fd8 (52d0fd8771cf35f8fdb31a41a96d545cebb74931)

rust-bors · 2026-09-23T16:24:52Z

☀️ Test successful - CI
Approved by: JonathanBrouwer
Duration: 2h 56m 43s
Pushing a92214c to main...

github-actions · 2026-09-23T16:28:24Z

What is this?

This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 9a9d194 (parent) -> a92214c (this PR)

Test differences

Show 98 test diffs

Stage 1

[ui (polonius)] tests/ui/attributes/doc_examples/rustc_dyn_incompatible_trait.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/attributes/doc_examples/rustc_dyn_incompatible_trait2.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/gca/direct-const-arg-fn-call.rs: pass -> [missing] (J0)
[ui (polonius)] tests/ui/const-generics/gca/gca-macro-fn-call.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/mgca/bad-direct-const-arg.rs: pass -> [missing] (J0)
[ui (polonius)] tests/ui/const-generics/mgca/bad-gca-macro.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/mgca/direct-const-arg-correct-rib.rs: pass -> [missing] (J0)
[ui (polonius)] tests/ui/const-generics/mgca/direct-const-arg-feature-gate.rs: pass -> [missing] (J0)
[ui (polonius)] tests/ui/const-generics/mgca/direct-const-arg-multiple-exprs.rs: pass -> [missing] (J0)
[ui (polonius)] tests/ui/const-generics/mgca/direct_const_arg-infer-as-type.rs: pass -> [missing] (J0)
[ui (polonius)] tests/ui/const-generics/mgca/gca-macro-correct-rib.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/mgca/gca-macro-feature-gate.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/mgca/gca-macro-infer-as-type.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/mgca/gca-macro-multiple-exprs.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/mgca/invalid-direct-const-arg-owner-issue-159172.rs#expr: pass -> [missing] (J0)
[ui (polonius)] tests/ui/const-generics/mgca/invalid-direct-const-arg-owner-issue-159172.rs#ty: pass -> [missing] (J0)
[ui (polonius)] tests/ui/const-generics/mgca/invalid-gca-macro-owner-issue-159172.rs#expr: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/mgca/invalid-gca-macro-owner-issue-159172.rs#ty: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/mgca/multi_braced_direct_const_args.rs: pass -> [missing] (J0)
[ui (polonius)] tests/ui/const-generics/mgca/multi_braced_gca_macro.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/const-generics/mgca/unconstrained-type-params.rs: [missing] -> pass (J0)
[ui (polonius)] tests/ui/suggestions/as-mut-closure.rs: [missing] -> pass (J0)
[ui] tests/ui/attributes/doc_examples/rustc_dyn_incompatible_trait.rs: [missing] -> pass (J1)
[ui] tests/ui/attributes/doc_examples/rustc_dyn_incompatible_trait2.rs: [missing] -> pass (J1)
[ui] tests/ui/const-generics/gca/direct-const-arg-fn-call.rs: pass -> [missing] (J1)
[ui] tests/ui/const-generics/gca/gca-macro-fn-call.rs: [missing] -> pass (J1)
[ui] tests/ui/const-generics/mgca/bad-direct-const-arg.rs: pass -> [missing] (J1)
[ui] tests/ui/const-generics/mgca/bad-gca-macro.rs: [missing] -> pass (J1)
[ui] tests/ui/const-generics/mgca/direct-const-arg-correct-rib.rs: pass -> [missing] (J1)
[ui] tests/ui/const-generics/mgca/direct-const-arg-feature-gate.rs: pass -> [missing] (J1)
[ui] tests/ui/const-generics/mgca/direct-const-arg-multiple-exprs.rs: pass -> [missing] (J1)
[ui] tests/ui/const-generics/mgca/direct_const_arg-infer-as-type.rs: pass -> [missing] (J1)
[ui] tests/ui/const-generics/mgca/gca-macro-correct-rib.rs: [missing] -> pass (J1)
[ui] tests/ui/const-generics/mgca/gca-macro-feature-gate.rs: [missing] -> pass (J1)
[ui] tests/ui/const-generics/mgca/gca-macro-infer-as-type.rs: [missing] -> pass (J1)
[ui] tests/ui/const-generics/mgca/gca-macro-multiple-exprs.rs: [missing] -> pass (J1)
[ui] tests/ui/const-generics/mgca/invalid-direct-const-arg-owner-issue-159172.rs#expr: pass -> [missing] (J1)
[ui] tests/ui/const-generics/mgca/invalid-direct-const-arg-owner-issue-159172.rs#ty: pass -> [missing] (J1)
[ui] tests/ui/const-generics/mgca/invalid-gca-macro-owner-issue-159172.rs#expr: [missing] -> pass (J1)
[ui] tests/ui/const-generics/mgca/invalid-gca-macro-owner-issue-159172.rs#ty: [missing] -> pass (J1)
[ui] tests/ui/const-generics/mgca/multi_braced_direct_const_args.rs: pass -> [missing] (J1)
[ui] tests/ui/const-generics/mgca/multi_braced_gca_macro.rs: [missing] -> pass (J1)
[ui] tests/ui/const-generics/mgca/unconstrained-type-params.rs: [missing] -> pass (J1)
[ui] tests/ui/suggestions/as-mut-closure.rs: [missing] -> pass (J1)
[pretty] tests/pretty/direct-const-arg.rs: pass -> [missing] (J5)
[pretty] tests/pretty/gca-macro.rs: [missing] -> pass (J5)
[codegen] tests/codegen-llvm/amdgpu-abi/struct-abi.rs: [missing] -> pass (J6)

Stage 2

[ui] tests/ui/attributes/doc_examples/rustc_dyn_incompatible_trait.rs: [missing] -> pass (J2)
[ui] tests/ui/attributes/doc_examples/rustc_dyn_incompatible_trait2.rs: [missing] -> pass (J2)
[ui] tests/ui/const-generics/gca/direct-const-arg-fn-call.rs: pass -> [missing] (J2)
[ui] tests/ui/const-generics/gca/gca-macro-fn-call.rs: [missing] -> pass (J2)
[ui] tests/ui/const-generics/mgca/bad-direct-const-arg.rs: pass -> [missing] (J2)
[ui] tests/ui/const-generics/mgca/bad-gca-macro.rs: [missing] -> pass (J2)
[ui] tests/ui/const-generics/mgca/direct-const-arg-correct-rib.rs: pass -> [missing] (J2)
[ui] tests/ui/const-generics/mgca/direct-const-arg-feature-gate.rs: pass -> [missing] (J2)
[ui] tests/ui/const-generics/mgca/direct-const-arg-multiple-exprs.rs: pass -> [missing] (J2)
[ui] tests/ui/const-generics/mgca/direct_const_arg-infer-as-type.rs: pass -> [missing] (J2)
[ui] tests/ui/const-generics/mgca/gca-macro-correct-rib.rs: [missing] -> pass (J2)
[ui] tests/ui/const-generics/mgca/gca-macro-feature-gate.rs: [missing] -> pass (J2)
[ui] tests/ui/const-generics/mgca/gca-macro-infer-as-type.rs: [missing] -> pass (J2)
[ui] tests/ui/const-generics/mgca/gca-macro-multiple-exprs.rs: [missing] -> pass (J2)
[ui] tests/ui/const-generics/mgca/invalid-direct-const-arg-owner-issue-159172.rs#expr: pass -> [missing] (J2)
[ui] tests/ui/const-generics/mgca/invalid-direct-const-arg-owner-issue-159172.rs#ty: pass -> [missing] (J2)
[ui] tests/ui/const-generics/mgca/invalid-gca-macro-owner-issue-159172.rs#expr: [missing] -> pass (J2)
[ui] tests/ui/const-generics/mgca/invalid-gca-macro-owner-issue-159172.rs#ty: [missing] -> pass (J2)
[ui] tests/ui/const-generics/mgca/multi_braced_direct_const_args.rs: pass -> [missing] (J2)
[ui] tests/ui/const-generics/mgca/multi_braced_gca_macro.rs: [missing] -> pass (J2)
[ui] tests/ui/const-generics/mgca/unconstrained-type-params.rs: [missing] -> pass (J2)
[ui] tests/ui/suggestions/as-mut-closure.rs: [missing] -> pass (J2)
[pretty] tests/pretty/direct-const-arg.rs: pass -> [missing] (J3)
[pretty] tests/pretty/gca-macro.rs: [missing] -> pass (J3)
[codegen] tests/codegen-llvm/amdgpu-abi/struct-abi.rs: [missing] -> pass (J4)

Additionally, 26 doctest diffs were found. These are ignored, as they are noisy.

Job group index

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
    test-dashboard a92214c92df8cc0261f5ab5c08c6376c2c03a958 --output-dir test-dashboard

And then open test-dashboard/index.html in your browser to see an overview of all executed tests.

Job duration changes

dist-loongarch64-musl: 1h 15m -> 2h 4m (+64.1%)
test-x86_64-rust-for-linux: 37m 57s -> 59m 52s (+57.8%)
test-x86_64-gnu-gcc-core-tests: 11m 58s -> 18m 49s (+57.2%)
test-x86_64-gnu-llvm-22-2: 1h 8m -> 1h 44m (+51.7%)
test-x86_64-gnu-llvm-21-2: 1h 7m -> 1h 40m (+48.6%)
test-x86_64-gnu-miri: 1h 2m -> 1h 29m (+42.8%)
test-x86_64-gnu-stdlib-semver-check: 11m 50s -> 16m 40s (+40.8%)
test-x86_64-gnu-llvm-21-3: 1h 49m -> 1h 14m (-32.0%)
test-armhf-gnu: 1h 11m -> 1h 33m (+31.6%)
test-i686-gnu-1: 2h 14m -> 1h 35m (-28.5%)

How to interpret the job duration changes?

Job durations can vary a lot, based on the actual runner instance
that executed the job, system noise, invalidated caches, etc. The table above is provided
mostly for t-infra members, for simpler debugging of potential CI slow-downs.

rust-timer · 2026-09-23T17:10:00Z

Finished benchmarking commit (a92214c): comparison URL.

Overall result: ❌ regressions - no action needed

@rustbot label: -perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.8%	[0.7%, 1.0%]	3
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (secondary 0.9%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.9%	[0.9%, 0.9%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Cycles

Results (secondary -1.2%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	4.1%	[3.2%, 5.2%]	3
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-6.5%	[-9.7%, -4.4%]	3
All ❌✅ (primary)	-	-	0

Binary size

This perf run didn't have relevant results for this metric.

Bootstrap: 489.957s -> 501.272s (2.31%)
Artifact size: 407.04 MiB -> 406.37 MiB (-0.17%)

rust-bors · 2026-09-23T17:45:19Z

📌 Perf builds for each rolled up PR:

PR#	Message	Perf Build Sha
#162177	Properly implement the gpu-kernel ABI for amdgpu	`2eefc8766c41447108a2ce74176ccea7b5ec4d97` (link)
#163168	std: Update `wasip3` crate dependency	`8421ad326f4b40ef7630fb0bdf7155dcc1f4e648` (link)
#163179	Cleanup offload build steps	`789b017c444b66899ac1615adacc4cdf43658f06` (link)
#163194	Remove unused `StashKey::UnderscoreForArrayLengths`	`da2f7e20c1f680d151b263bdea0ed0ed0d2d2f4d` (link)
#163198	rename direct_const_arg! to gca!	`c5e08135ec2de997bef2f21bb4817810a79ebffe` (link)
#163205	Remove `suggestion_for_allocator_api`	`cad1e1b562c033cb7aaf7fd6b62d63f6cdc28e67` (link)
#162497	document `#[rustc_dyn_incompatible_trait]`	`9cfd87e5358a97aafe83dac4a3770bc931432cf7` (link)
#162702	regression test for unconstrained const args	`9fba0a8dce285161964e196145f78691503f5073` (link)
#163191	Enhance mutable closure suggestions with as_mut() support	`2901913f370033b6c388a1958106e7c2f192fa08` (link)
#163192	Fix Typo in `std::sys::process::unix::unsupported::wait_sta…	`4fe9beb38817a5a83a75440fc95ad7f1610f2da6` (link)
#163196	Remove `DiagInner::sort_span`	`bfe5389d868531672805d90bc131459cdcce9c51` (link)
#163197	Fix flt2dec build on 16-bit targets	`f447349939202c1e7c947ee62465133ecaf36a14` (link)

parent commit: 9a9d1946d1

In the case of a perf regression, run the following command with the SHAs of each PR you suspect might be the cause: @rust-timer triage $SHA $SHA $SHA..., or run @rust-timer triage all to benchmark all rollup members.

JonathanBrouwer · 2026-09-23T18:02:35Z

@rust-timer triage all

rust-timer · 2026-09-23T18:02:41Z

Running triage with 1 benchmark

Triage only executes the benchmarks on rollup members, that were changed significantly on the rollup.
For this rollup, these benchmarks are:

coercions

#162177 `2eefc87` Properly implement the gpu-kernel ABI for amdgpu

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

#163168 `8421ad3` std: Update `wasip3` crate dependency

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

#163179 `789b017` Cleanup offload build steps

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

#163194 `da2f7e2` Remove unused `StashKey::UnderscoreForArrayLengths`

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

Results (secondary -1.4%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-1.4%	[-1.4%, -1.4%]	1
All ❌✅ (primary)	-	-	0

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

#163198 `c5e0813` rename direct_const_arg! to gca!

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.8%	[0.7%, 0.9%]	3
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

#163205 `cad1e1b` Remove `suggestion_for_allocator_api`

This perf run didn't have relevant results for the `instruction count` metric.

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

Results (secondary -2.6%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.6%	[-2.6%, -2.6%]	1
All ❌✅ (primary)	-	-	0

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#162497 `9cfd87e` document `#[rustc_dyn_incompatible_trait]`

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Max RSS (memory usage)

Results (secondary -4.3%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-4.3%	[-4.3%, -4.3%]	1
All ❌✅ (primary)	-	-	0

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#162702 `9fba0a8` regression test for unconstrained const args

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#163191 `2901913` Enhance mutable closure suggestions with as_mut() support

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#163192 `4fe9beb` Fix Typo in `std::sys::process::unix::unsupported::wait_status` Docs

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#163196 `bfe5389` Remove `DiagInner::sort_span`

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Results (secondary -1.5%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-1.5%	[-1.5%, -1.5%]	1
All ❌✅ (primary)	-	-	0

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#163197 `f447349` Fix flt2dec build on 16-bit targets

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malezjaa and others added 28 commits September 12, 2026 23:55

regression test for unconstrained const args

46dd39c

Add regression test for mutable closure argument suggestions

e7b3b14

std: Update wasip3 crate dependency

a748eae

Keeping it up-to-date and resolving minor issues with it.

document #[rustc_dyn_incompatible_trait]

76c850e

Stop embedding device code, now that the clang-linker-wrapper isn't c…

9b9cb70

…onsuming it anymore

also drop now unused host.o

4f20be3

Enhance mutable closure suggestions with as_mut() support

87e95d6

Fix typo in std::sys::process::unix::unsupported::wait_status documen…

e5e0b10

…tation

Fix bignum build on 16-bit targets

16e81e9

Pre-commit amdgpu gpu-kernel ABI test

b8c747f

Remove suggestion_for_allocator_api

b267be9

Remove unused StashKey::UnderscoreForArrayLengths

71d4ef8

It's no longer ever used for stashing, so the code looking for it is dead. It became dead in PR 141610 when `generic_arg_infer` was stabilized and `[T; _]` became valid.

rename direct_const_arg! to gca!

4dcd02e

Co-authored-by: Boxy <rust@boxyuwu.dev>

Rollup merge of rust-lang#163168 - alexcrichton:update-wasip3, r=John…

c80dce5

…Titor std: Update `wasip3` crate dependency Keeping it up-to-date and resolving minor issues with it.

Rollup merge of rust-lang#163205 - mejrs:allocator_api_suggestion, r=…

b5caa1d

…nnethercote Remove `suggestion_for_allocator_api` It's dead code since rust-lang#156882 cc @nia-e

Rollup merge of rust-lang#162497 - mejrs:rustc_dyn_incompatible_trait…

04aa30c

…, r=ShoyuVanilla document `#[rustc_dyn_incompatible_trait]`

Rollup merge of rust-lang#162702 - malezjaa:regression-test-for-uncon…

8f07588

…strained-const-args, r=BoxyUwU regression test for unconstrained const args Closes rust-lang#146906

Rollup merge of rust-lang#163191 - chenyukang:yukang-fix-as-mut-closu…

d5151b7

…re-suggestion, r=nnethercote Enhance mutable closure suggestions with as_mut() support This PR changed `can_use_as_ref` to support `as_mut` when `as_ref` is not proper.

rust-bors Bot added the rollup A PR which is a rollup label Sep 23, 2026

rustbot added the A-attributes Area: Attributes (`#[…]`, `#![…]`) label Sep 23, 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 Sep 23, 2026

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rust-bors Bot added merged-by-bors This PR was explicitly merged by bors. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Sep 23, 2026

rust-bors Bot merged commit a92214c into rust-lang:main Sep 23, 2026
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rustbot added this to the 1.100.0 milestone Sep 23, 2026

JonathanBrouwer mentioned this pull request Sep 23, 2026

rename direct_const_arg! to gca! #163198

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rust-timer commented Sep 23, 2026

Overall result: ❌ regressions - no action needed

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rust-timer commented Sep 23, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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#162177 2eefc87 Properly implement the gpu-kernel ABI for amdgpu

#163168 8421ad3 std: Update wasip3 crate dependency

#163179 789b017 Cleanup offload build steps

#163194 da2f7e2 Remove unused StashKey::UnderscoreForArrayLengths

#163198 c5e0813 rename direct_const_arg! to gca!

#163205 cad1e1b Remove suggestion_for_allocator_api

#162497 9cfd87e document #[rustc_dyn_incompatible_trait]

#162702 9fba0a8 regression test for unconstrained const args

#163191 2901913 Enhance mutable closure suggestions with as_mut() support

#163192 4fe9beb Fix Typo in std::sys::process::unix::unsupported::wait_status Docs

#163196 bfe5389 Remove DiagInner::sort_span

#163197 f447349 Fix flt2dec build on 16-bit targets

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rust-timer commented Sep 23, 2026 •

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#162177 `2eefc87` Properly implement the gpu-kernel ABI for amdgpu

#163168 `8421ad3` std: Update `wasip3` crate dependency

#163179 `789b017` Cleanup offload build steps

#163194 `da2f7e2` Remove unused `StashKey::UnderscoreForArrayLengths`

#163198 `c5e0813` rename direct_const_arg! to gca!

#163205 `cad1e1b` Remove `suggestion_for_allocator_api`

#162497 `9cfd87e` document `#[rustc_dyn_incompatible_trait]`

#162702 `9fba0a8` regression test for unconstrained const args

#163191 `2901913` Enhance mutable closure suggestions with as_mut() support

#163192 `4fe9beb` Fix Typo in `std::sys::process::unix::unsupported::wait_status` Docs

#163196 `bfe5389` Remove `DiagInner::sort_span`

#163197 `f447349` Fix flt2dec build on 16-bit targets