stdarch subtree update#159517
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rust-bors[bot] merged 26 commits intoJul 19, 2026
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The `is::`, `cs::`, and `ls::` prefixes were originally used to clearly
distinguish helper intrinsics from different namespaces at call sites.
However, due to limitations in Rust macro expansion, `prefix::simd_xxx`
cannot always be used. Some macro expansions only accept an identifier,
causing errors such as:
```
($ft:literal, $name:ident, $op:path, $oty:ty, $ity:ident) => {
let r: $ity = $op::<IMM, _>(a);
^^ expected one of `.`, `;`, `?`, `else`, or an operator
```
Instead of relying on namespace prefixes, rename the LoongArch-specific
`simd_xxx` helpers to `simd_ext_xxx` and remove the `is::`, `cs::`, and
`ls::` prefixes from macro invocations. This preserves the distinction
between helper intrinsics while avoiding the macro expansion limitation.
Update itertools to 0.15
loongarch: Rename SIMD helper intrinsics to avoid macro path issues
Port stdarch-gen-loongarch to stdarch-gen-common harness
add better test for `permutexvar`
document differences from pure hardware behavior
loongarch: Use `intrinsics::simd` for vldi
Re-enable ICX run
This updates the rust-version file to fcbe791.
Pull recent changes from https://github.com/rust-lang/rust via Josh. Upstream ref: rust-lang/rust@fcbe791 Filtered ref: rust-lang/stdarch@4742894 Upstream diff: rust-lang/rust@8e15021...fcbe791 This merge was created using https://github.com/rust-lang/josh-sync.
Rustc pull update
loongarch: Use `intrinsics::simd` for vbs{l,r}l
the upper quadword is undefined
…-quad for sse4a functions compare only the lower quadword
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…uwer Rollup of 6 pull requests Successful merges: - #159517 (stdarch subtree update) - #159010 (Simplify the unwind crate) - #156650 (Stop using prefix_tys) - #159152 (triagebot: cc miri on any special-casing of miri in the standard library) - #159522 (Apply `#[diagnostic::opaque]` to macros expanding to built-in syntax) - #159528 (implement `const_binary_search`)
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Rollup merge of #159517 - folkertdev:stdarch-sync-2026-07-18, r=folkertdev stdarch subtree update Subtree update of `stdarch` to rust-lang/stdarch@50afa9f. Created using https://github.com/rust-lang/josh-sync. r? @ghost
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…uwer Rollup of 6 pull requests Successful merges: - rust-lang/rust#159517 (stdarch subtree update) - rust-lang/rust#159010 (Simplify the unwind crate) - rust-lang/rust#156650 (Stop using prefix_tys) - rust-lang/rust#159152 (triagebot: cc miri on any special-casing of miri in the standard library) - rust-lang/rust#159522 (Apply `#[diagnostic::opaque]` to macros expanding to built-in syntax) - rust-lang/rust#159528 (implement `const_binary_search`)
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Subtree update of
stdarchto rust-lang/stdarch@50afa9f.Created using https://github.com/rust-lang/josh-sync.
r? @ghost