stdarch subtree update by folkertdev · Pull Request #158497 · rust-lang/rust

folkertdev · 2026-06-27T19:29:26Z

Subtree update of stdarch to rust-lang/stdarch@62d5595.

Created using https://github.com/rust-lang/josh-sync.

This updates the rust-version file to 029c9e1.

Pull recent changes from https://github.com/rust-lang/rust via Josh. Upstream ref: rust-lang/rust@029c9e1 Filtered ref: rust-lang/stdarch@b914e70 Upstream diff: rust-lang/rust@045b177...029c9e1 This merge was created using https://github.com/rust-lang/josh-sync.

Rustc pull update

Correct some wrong uses of LLVM intrinsics

The CRC[C].W.{B,H}.W only consume the low 8/16 bits of the input operand. The previous unsigned cast was a workaround for Miri's software implementation. Miri now masks the inputs to match hardware semantics, and LLVM will learn the demanded-bits property of CRC intrinsics, so the explicit zero-extension is no longer required.

Update rand to 0.9.3 to fix `GHSA-cq8v-f236-94qc`

Stabilize LoongArch CRC Intrinsics

loongarch: Remove explicit zero-extension from CRC[C].W.{B,H}.W

These intrinsics need `Arguments_Preparation` added so that the intrinsic-test tool knows to generate const arguments.

Clang uses the `llvm.aarch64.sve.rev.bN` intrinsic for `svrev` with `b16`, `b32` and `b64`. This required small generator changes so it knew a bool-to-bool conversion was a no-op and a new blanket identity impl of `SveInto` so the calls generated compile.

Clang uses the `llvm.aarch64.sve.zip.bN` intrinsic for `svzip` with `b16`, `b32` and `b64` and the `llvm.aarch64.sve.uzp.bN` intrinsic for `svuzp` with the same types.

Forward addl. arguments to `intrinsic-test.sh` to `cargo test` so that `--no-fail-fast` or a specific test name can be passed.

…e-sve update `arm_intrinsics.json` for `svset` and `svget`

intrinsic-test: fwd args in `intrinsic-test.sh`

…on-svrev-svzip-svuzp core_arch: redefine `svrev`, `svzip` and `svuzp`

This updates the rust-version file to 8e15021.

Pull recent changes from https://github.com/rust-lang/rust via Josh. Upstream ref: rust-lang/rust@8e15021 Filtered ref: rust-lang/stdarch@bc28f3f Upstream diff: rust-lang/rust@029c9e1...8e15021 This merge was created using https://github.com/rust-lang/josh-sync.

Rustc pull update

Various SVE intrinsics are not yet implemented in stdarch, but are present in the `arm_intrinsics.json` and so should be skipped.

SVE intrinsics aren't available on big endian

The output of these cannot be compared.

`sveorv` intrinsics trigger a miscompile in LLVM where the call to the Rust intrinsic is optimised out and replaced with a zero, which is incorrect.

These tests require that we generate test arrays with values that are valid when cast to a pointer, which we don't currently support.

GCC quickly ICEs when asked to compile intrinsic-test's wrapper sources.

Add stdarch-gen-common: shared check/bless harness for generators

…kips intrinsic-test: add filters for sve

…tting-printing-tweaks intrinsic-test: remove `concatln!` and redundant newlines

This isn't strictly necessary but these type names were longer than they needed to be.

Refactoring enabling accessing architecture-specific behaviour that isn't associated with either of the return or argument types.

Refactoring enabling accessing architecture-specific behaviour that isn't associated with the specific argument type.

…ic-over-arch intrinsic-test: make types generic over `SupportedArchitecture`

There doesn't need to be so many or other modules with the values.

…ify-consts intrinsic-test: simplify architecture constants

A small refactoring to make the type printing logic slightly cleaner and with greater code re-use.

Introduces a per-architecture abstraction over how intrinsic results are compared, so that later commits can implement Arm-specific comparison logic for SVE.

…printing-comparison-abstraction intrinsic-test: simplify type printing + comparison abstraction

rustbot · 2026-06-27T19:29:30Z

stdarch is developed in its own repository. If possible, consider making this change to rust-lang/stdarch instead.

cc @Amanieu, @sayantn

LLVM updated the name, the old one still works but stdarch is now using the new one

rustbot · 2026-06-27T21:16:03Z

miri is developed in its own repository. If possible, consider making this change to rust-lang/miri instead.

cc @rust-lang/miri

rustc_codegen_cranelift is developed in its own repository. If possible, consider making this change to rust-lang/rustc_codegen_cranelift instead.

cc @bjorn3

rustc_codegen_gcc is developed in its own repository. If possible, consider making this change to rust-lang/rustc_codegen_gcc instead.

cc @antoyo, @GuillaumeGomez

folkertdev · 2026-06-27T22:49:23Z

@bors r+ p=1

rust-bors · 2026-06-27T22:49:28Z

📌 Commit 3515461 has been approved by folkertdev

It is now in the queue for this repository.

🌲 The tree is currently closed for pull requests below priority 2. This pull request will be tested once the tree is reopened.

@ghost

…, r=folkertdev stdarch subtree update Subtree update of `stdarch` to rust-lang/stdarch@62d5595. Created using https://github.com/rust-lang/josh-sync. r? @ghost

Rollup of 15 pull requests Successful merges: - #158497 (stdarch subtree update) - #152225 (Add supertrait item shadowing for type-level path resolution) - #158194 (Adds RmetaLinkCache a per-link cache that uses path as the key of dec…) - #158466 (rustdoc: show impl Trait<Box<Local>> for Foreign, etc on Local's docs) - #158501 (miri subtree update) - #153097 (Expand `OptionFlatten`'s iterator methods) - #157614 (Move tests drop) - #157996 (perf: drop the full-crate AST walk in check_unused) - #158163 (Fix too-short variance slice in `variances_of` cycle recovery) - #158233 (Allow the unstable attribute on foreign type) - #158433 (Fix inconsistent safety requirement in VecDeque::nonoverlapping_ranges) - #158464 (Reorganize `tests/ui/issues` [15/N]) - #158470 (Upgrade `jsonsocck` and `jsondoclint` to edition 2024.) - #158485 (Reorganize `tests/ui/issues` [16/N]) - #158488 (Upgrade `rustdoc-json-types` to 2024 edition.)

heiher and others added 30 commits May 25, 2026 14:48

Stabilize LoongArch CRC intrinsics

c0c2185

Correct some wrong uses of LLVM intrinsics

09d22ac

Use unadjusted ABI everywhere

2dd54ff

Prepare for merging from rust-lang/rust

a444517

This updates the rust-version file to 029c9e1.

intrinsic-test: remove now-unnecessary feat attr

1709e20

Merge pull request rust-lang#2156 from rust-lang/rustc-pull

ffdf5d0

Rustc pull update

Merge pull request rust-lang#2144 from sayantn/llvm-intrinsics

bc34a3f

Correct some wrong uses of LLVM intrinsics

Update rand to 0.9.3 to fix GHSA-cq8v-f236-94qc

1d67d0d

Merge pull request rust-lang#2149 from ruyrocha/hotfix/bump-rand-version

72abf46

Update rand to 0.9.3 to fix `GHSA-cq8v-f236-94qc`

Merge pull request rust-lang#2137 from heiher/stabilize-loong64-crc

50897da

Stabilize LoongArch CRC Intrinsics

Merge pull request rust-lang#2159 from heiher/crc

22fdc30

loongarch: Remove explicit zero-extension from CRC[C].W.{B,H}.W

arm-intrinsics: svget{2,3,4}

3f5f981

These intrinsics need `Arguments_Preparation` added so that the intrinsic-test tool knows to generate const arguments.

arm-intrinsics: svset{2,3,4}

992cb1d

These intrinsics need `Arguments_Preparation` added so that the intrinsic-test tool knows to generate const arguments.

core_arch: redefine sv{zip,uzp}_b{16,32,64}

6346107

Clang uses the `llvm.aarch64.sve.zip.bN` intrinsic for `svzip` with `b16`, `b32` and `b64` and the `llvm.aarch64.sve.uzp.bN` intrinsic for `svuzp` with the same types.

intrinsic-test: fwd args in intrinsic-test.sh

ae20f10

Forward addl. arguments to `intrinsic-test.sh` to `cargo test` so that `--no-fail-fast` or a specific test name can be passed.

Merge pull request rust-lang#2162 from davidtwco/intrinsic-data-updat…

da637ab

…e-sve update `arm_intrinsics.json` for `svset` and `svget`

Merge pull request rust-lang#2164 from davidtwco/intrinsic-test-fwd-args

cf43ffa

intrinsic-test: fwd args in `intrinsic-test.sh`

Merge pull request rust-lang#2163 from davidtwco/intrinsic-redefiniti…

89b4de5

…on-svrev-svzip-svuzp core_arch: redefine `svrev`, `svzip` and `svuzp`

Prepare for merging from rust-lang/rust

37df0fc

This updates the rust-version file to 8e15021.

Merge pull request rust-lang#2168 from rust-lang/rustc-pull

ca7c1ad

Rustc pull update

intrinsic-test: skip unimplemented SVE intrinsics

169a8e9

Various SVE intrinsics are not yet implemented in stdarch, but are present in the `arm_intrinsics.json` and so should be skipped.

intrinsic-test: skip SVE intrinsics on big endian

937c582

SVE intrinsics aren't available on big endian

intrinsic-test: do not test svundef*

922330e

The output of these cannot be compared.

intrinsic-test: skip sveorv* (llvm-project#203921)

dabb59e

`sveorv` intrinsics trigger a miscompile in LLVM where the call to the Rust intrinsic is optimised out and replaced with a zero, which is incorrect.

intrinsic-test: skip svld*_gather_*

6638cf5

These tests require that we generate test arrays with values that are valid when cast to a pointer, which we don't currently support.

intrinsic-test: no SVE testing under GCC

dc2f964

GCC quickly ICEs when asked to compile intrinsic-test's wrapper sources.

folkertdev and others added 13 commits June 20, 2026 17:51

Merge pull request rust-lang#2157 from xonx4l/stdarch-gen-common

db43c44

Add stdarch-gen-common: shared check/bless harness for generators

Merge pull request rust-lang#2169 from davidtwco/intrinsic-test-sve-s…

2d471ac

…kips intrinsic-test: add filters for sve

Merge pull request rust-lang#2171 from davidtwco/intrinsic-test-forma…

397f748

…tting-printing-tweaks intrinsic-test: remove `concatln!` and redundant newlines

intrinsic-test: shorten various type names

9558c38

This isn't strictly necessary but these type names were longer than they needed to be.

intrinsic-test: intrinsic generic over arch not type

a7e203a

Refactoring enabling accessing architecture-specific behaviour that isn't associated with either of the return or argument types.

intrinsic-test: arg generic over arch not type

2a346c5

Refactoring enabling accessing architecture-specific behaviour that isn't associated with the specific argument type.

Merge pull request rust-lang#2170 from davidtwco/intrinsic-test-gener…

764a571

…ic-over-arch intrinsic-test: make types generic over `SupportedArchitecture`

intrinsic-test: simplify architecture constants

f4b49bc

There doesn't need to be so many or other modules with the values.

Merge pull request rust-lang#2172 from davidtwco/intrinsic-test-simpl…

0c9c049

…ify-consts intrinsic-test: simplify architecture constants

intrinsic-test: simplify type printing

62ddde1

A small refactoring to make the type printing logic slightly cleaner and with greater code re-use.

intrinsic-test: introduce get_comparison_function

bae77b1

Introduces a per-architecture abstraction over how intrinsic results are compared, so that later commits can implement Arm-specific comparison logic for SVE.

intrinsic-test: rename get_*_function fns

9686ccc

Merge pull request rust-lang#2173 from davidtwco/intrinsic-test-type-…

a8fabf0

…printing-comparison-abstraction intrinsic-test: simplify type printing + comparison abstraction

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Jun 27, 2026

This comment has been minimized.

Sign in to view

use "llvm.prefetch.p0" instead of "llvm.prefetch"

3515461

LLVM updated the name, the old one still works but stdarch is now using the new one

rustbot added the A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. label Jun 27, 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 Jun 27, 2026

This was referenced Jun 28, 2026

Rollup of 10 pull requests #158507

Closed

Rollup of 15 pull requests #158508

Merged

rust-bors Bot merged commit 6bc6675 into rust-lang:main Jun 28, 2026
13 checks passed

rustbot added this to the 1.98.0 milestone Jun 28, 2026

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Uh oh!

stdarch subtree update#158497

stdarch subtree update#158497
rust-bors[bot] merged 47 commits into
rust-lang:mainfrom
folkertdev:stdarch-sync-2026-06-27

folkertdev commented Jun 27, 2026

Uh oh!

rustbot commented Jun 27, 2026

Uh oh!

This comment has been minimized.

rustbot commented Jun 27, 2026

Uh oh!

folkertdev commented Jun 27, 2026

Uh oh!

rust-bors Bot commented Jun 27, 2026

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

9 participants

Uh oh!

Uh oh!

Conversation

folkertdev commented Jun 27, 2026

Uh oh!

rustbot commented Jun 27, 2026

Uh oh!

This comment has been minimized.

rustbot commented Jun 27, 2026

Uh oh!

folkertdev commented Jun 27, 2026

Uh oh!

rust-bors Bot commented Jun 27, 2026

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

9 participants