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Auto merge of #100911 - tmiasko:update-stdarch, r=Amanieu

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Update stdarch submodule

Changes from stdarch:

* Fix links in documentation of cmpxchg16b
* Use load intrinsic and loop for intrinsic-test programs. Add --release flag back to intrinsic-test programs.
* Properly fix vext intrinsic tests
* Replace some calls to `pointer::offset` with `add` and `sub`
* Allow internal use of stdsimd from detect_feature
* fix target name in contributing.md
* Tweak constant for ARM vext instruction tests
* Use `llvm.ppc.altivec.lvx` intrinsic for `vec_ld`
*  Adding doc links for arm neon intrinsics
* Adding doc links for arm crypto and aes intrinsics
* Remove instruction tests for `__mmask*` intrinsics
* Update ubuntu 21.10 docker containers to 22.04
* Adding documentation links for arm crc32 intrinsics
* Remove restrictions on compare-exchange memory ordering.
* Fix a typo in the document.
* Allow mapping a runtime feature to a set of target_features
* Update atomic intrinsics
* Fully qualify recursive macro calls
* Ensure the neon vector aggregates like `float32x4x4_t` are `#[repr(C)]`
* Remove useless conditional compilation
* Fix ARM vbsl* NEON intrinsics

r? `@Amanieu`
This commit is contained in:
bors 2022-08-25 18:17:42 +00:00
commit 7480389611
3 changed files with 10 additions and 28 deletions
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21
library/core/src/intrinsics.rs
View File

@ -737,28 +737,7 @@ extern "rust-intrinsic" {
/// [`atomic::compiler_fence`] by passing [`Ordering::AcqRel`]
/// as the `order`.
pub fn atomic_singlethreadfence_acqrel();
}
// These have been renamed.
//
// These are the aliases for the old names.
// To be removed when stdarch and panic_unwind have been updated.
mod atomics {
pub use super::atomic_cxchg_acqrel_acquire as atomic_cxchg_acqrel;
pub use super::atomic_cxchg_acqrel_relaxed as atomic_cxchg_acqrel_failrelaxed;
pub use super::atomic_cxchg_acquire_acquire as atomic_cxchg_acq;
pub use super::atomic_cxchg_acquire_relaxed as atomic_cxchg_acq_failrelaxed;
pub use super::atomic_cxchg_relaxed_relaxed as atomic_cxchg_relaxed;
pub use super::atomic_cxchg_release_relaxed as atomic_cxchg_rel;
pub use super::atomic_cxchg_seqcst_acquire as atomic_cxchg_failacq;
pub use super::atomic_cxchg_seqcst_relaxed as atomic_cxchg_failrelaxed;
pub use super::atomic_cxchg_seqcst_seqcst as atomic_cxchg;
pub use super::atomic_store_seqcst as atomic_store;
}
pub use atomics::*;
extern "rust-intrinsic" {
/// The `prefetch` intrinsic is a hint to the code generator to insert a prefetch instruction
/// if supported; otherwise, it is a no-op.
/// Prefetches have no effect on the behavior of the program but can change its performance

15
library/panic_unwind/src/seh.rs
View File

@ -256,7 +256,7 @@ cfg_if::cfg_if! {
}
pub unsafe fn panic(data: Box<dyn Any + Send>) -> u32 {
use core::intrinsics::atomic_store;
use core::intrinsics::atomic_store_seqcst;
// _CxxThrowException executes entirely on this stack frame, so there's no
// need to otherwise transfer `data` to the heap. We just pass a stack
@ -288,20 +288,23 @@ pub unsafe fn panic(data: Box<dyn Any + Send>) -> u32 {
//
// In any case, we basically need to do something like this until we can
// express more operations in statics (and we may never be able to).
atomic_store(&mut THROW_INFO.pmfnUnwind as *mut _ as *mut u32, ptr!(exception_cleanup) as u32);
atomic_store(
atomic_store_seqcst(
&mut THROW_INFO.pmfnUnwind as *mut _ as *mut u32,
ptr!(exception_cleanup) as u32,
);
atomic_store_seqcst(
&mut THROW_INFO.pCatchableTypeArray as *mut _ as *mut u32,
ptr!(&CATCHABLE_TYPE_ARRAY as *const _) as u32,
);
atomic_store(
atomic_store_seqcst(
&mut CATCHABLE_TYPE_ARRAY.arrayOfCatchableTypes[0] as *mut _ as *mut u32,
ptr!(&CATCHABLE_TYPE as *const _) as u32,
);
atomic_store(
atomic_store_seqcst(
&mut CATCHABLE_TYPE.pType as *mut _ as *mut u32,
ptr!(&TYPE_DESCRIPTOR as *const _) as u32,
);
atomic_store(
atomic_store_seqcst(
&mut CATCHABLE_TYPE.copyFunction as *mut _ as *mut u32,
ptr!(exception_copy) as u32,
);

2
library/stdarch

@ -1 +1 @@
Subproject commit 28335054b1f417175ab5005cf1d9cf7937737930
Subproject commit 42df7394d38bc7b945116ea3ad8a7cbcd1db50a9