Rollup of 5 pull requests#151183
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rust-bors[bot] merged 11 commits intorust-lang:mainfrom Jan 16, 2026
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Add a rustc intrinsic `amdgpu_dispatch_ptr` to access the kernel dispatch packet on amdgpu. The HSA kernel dispatch packet contains important information like the launch size and workgroup size. The Rust intrinsic lowers to the `llvm.amdgcn.dispatch.ptr` LLVM intrinsic, which returns a `ptr addrspace(4)`, plus an addrspacecast to `addrspace(0)`, so it can be returned as a Rust reference. The returned pointer/reference is valid for the whole program lifetime, and is therefore `'static`. The return type of the intrinsic (`*const ()`) does not mention the struct so that rustc does not need to know the exact struct type. An alternative would be to define the struct as lang item or add a generic argument to the function. Short version: ```rust #[cfg(target_arch = "amdgpu")] pub fn amdgpu_dispatch_ptr() -> *const (); ```
Co-authored-by: ericinB <ericbncer@gmail.com>
merge privacy/privacy-sanity-2 with privacy/privacy-sanity.rs Add comment to generics/type-args-on-module-in-bound.rs Add comment to array-slice-vec/closure-in-array-eln.rs Add comment to array-slice-vec/return-in-array-len.rs Merge for-loop-while/break-outside-loop-2.rs with for-loop-while/break-outside-loop.rs Add comment to macros/column-macro-collision.rs Add comment to privacy/private-extern-fn-visibility.rs Add comment to mismatched_types/vec-hashset-type-mismatch.rs Merge std-sync-right-kind-impls-2.rs with std-sync-right-kind-impls.rs Add comment to array-slice-vec/slice-of-multi-ref.rs Add comment to mismatched_types\vec-hashset-type-mismatch.rs Add comment to derives/derive-hygiene-struct-builder.rs Add comment to label/undeclared-label-span.rs Add comment to label\undeclared-label-span.rs Add comment to mismatched_types/array-repeat-unit-struct.rs
…ubilee Add amdgpu_dispatch_ptr intrinsic There is an ongoing discussion in rust-lang#150452 about using address spaces from the Rust language in some way. As that discussion will likely not conclude soon, this PR adds one rustc_intrinsic with an addrspacecast to unblock getting basic information like launch and workgroup size and make it possible to implement something like `core::gpu`. Add a rustc intrinsic `amdgpu_dispatch_ptr` to access the kernel dispatch packet on amdgpu. The HSA kernel dispatch packet contains important information like the launch size and workgroup size. The Rust intrinsic lowers to the `llvm.amdgcn.dispatch.ptr` LLVM intrinsic, which returns a `ptr addrspace(4)`, plus an addrspacecast to `addrspace(0)`, so it can be returned as a Rust reference. The returned pointer/reference is valid for the whole program lifetime, and is therefore `'static`. The return type of the intrinsic (`&'static ()`) does not mention the struct so that rustc does not need to know the exact struct type. An alternative would be to define the struct as lang item or add a generic argument to the function. Is this ok or is there a better way (also, should it return a pointer instead of a reference)? Short version: ```rust #[cfg(target_arch = "amdgpu")] pub fn amdgpu_dispatch_ptr() -> *const (); ``` Tracking issue: rust-lang#135024
Unify and deduplicate From<T> float tests cc rust-lang#141726 Unify the From<bool> tests from f16.rs and f128.rs into a single float_test! in mod.rs.
Silence unused type param error on struct parse error
Given
```
#[derive(Clone)]
struct B<T> {
a: A<(T, u32)> // <- note, comma is missing here
/// asdf
b: u32,
}
```
do not emit unnecessary "unused `T`" error.
Fix rust-lang#141403.
Tidying up `tests/ui/issues` 15 tests [8/N] > [!NOTE] > Intermediate commits are intended to help review, but will be squashed add comment commit prior to merge. part of rust-lang#133895 There are some tests named {xxx}-2, which are meant to be merged with {xxx}. r? Kivooeo
Stabilise `EULER_GAMMA` and `GOLDEN_RATIO` constants for `f32` and `f64`. Tracking issue: rust-lang#146939 This PR renames the `EGAMMA` and `PHI` constants to `EULER_GAMMA` and `GOLDEN_RATIO` – respectively – and stabilises them under these names for `f32` and `f64`: ```rust // core::f16::consts pub const GOLDEN_RATIO: f16; pub const EULER_GAMMA: f16; // core::f32::consts pub const GOLDEN_RATIO: f32; pub const EULER_GAMMA: f32; // core::f64::consts pub const GOLDEN_RATIO: f64; pub const EULER_GAMMA: f64; // core::f128::consts pub const GOLDEN_RATIO: f128; pub const EULER_GAMMA: f128; ``` The feature gate for the stabilised items is also changed to `euler_gamma_golden_ratio`.
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@bors r+ rollup=never p=5 |
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📌 Perf builds for each rolled up PR:
previous master: 18ae990755 In the case of a perf regression, run the following command for each PR you suspect might be the cause: |
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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 18ae990 (parent) -> bcf787a (this PR) Test differencesShow 378 test diffsStage 1
Stage 2
Additionally, 280 doctest diffs were found. These are ignored, as they are noisy. Job group index
Test dashboardRun cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard bcf787a7805d6f26586409eb0ed7e4a739c7d687 --output-dir test-dashboardAnd then open Job duration changes
How to interpret the job duration changes?Job durations can vary a lot, based on the actual runner instance |
This was referenced Jan 16, 2026
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Finished benchmarking commit (bcf787a): comparison URL. Overall result: no relevant changes - no action needed@rustbot label: -perf-regression Instruction countThis benchmark run did not return any relevant results for this metric. Max RSS (memory usage)Results (primary 2.0%, secondary 2.3%)A less reliable metric. May be of interest, but not used to determine the overall result above.
CyclesResults (secondary -2.7%)A less reliable metric. May be of interest, but not used to determine the overall result above.
Binary sizeThis benchmark run did not return any relevant results for this metric. Bootstrap: 471.758s -> 473.462s (0.36%) |
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Successful merges:
tests/ui/issues15 tests [8/N] #151159 (Tidying uptests/ui/issues15 tests [8/N])EULER_GAMMAandGOLDEN_RATIOconstants forf32andf64. #151164 (StabiliseEULER_GAMMAandGOLDEN_RATIOconstants forf32andf64.)r? @ghost
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