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This mainly fixes the critical issue of aarch64 store intrinsics
overwriting additional memory, see
https://github.com/rust-lang/stdarch/issues/1220
Other changes:
* aarch64/armv7: additional vld1/vst1 intrinsics + perf fixes for existing ones
* armv7: Make FMA work with vfpv4
* Non-visible changes to the testing framework
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This notably brings in a number of codegen updates to ensure that wasm
simd intrinsics generate the expected instruction with LLVM 13
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This commit performs two changes to stabilize Rust support for
WebAssembly simd intrinsics:
* The stdarch submodule is updated to pull in rust-lang/stdarch#1179.
* The `wasm_target_feature` feature gate requirement for the `simd128`
feature has been removed, stabilizing the name `simd128`.
This should conclude the FCP started on #74372 and...
Closes #74372
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Fixes #85446
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This also includes a cherry-pick of
https://github.com/rust-lang/stdarch/commit/ec1461905b421cf0c56adeebb49bbf55bb33fd17
and https://github.com/rust-lang/stdarch/pull/1108 to fix a build
failure.
It also adds a re-export of various macros to the crate root of libstd -
previously they would show up automatically because std_detect was defined
in the same crate.
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The primary purpose is to get the fixes from
https://github.com/rust-lang/stdarch/pull/920
and https://github.com/rust-lang/stdarch/pull/922.
The other changes included are
https://github.com/rust-lang/stdarch/pull/917 and
https://github.com/rust-lang/stdarch/pull/919.
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This commit updates the src/stdarch submodule primarily to include
rust-lang/stdarch#874 which updated and revamped WebAssembly SIMD
intrinsics and renamed WebAssembly atomics intrinsics. This is all
unstable surface area of the standard library so the changes should be
ok here. The SIMD updates also enable SIMD intrinsics to be used by any
program any any time, yay!
cc #74372, a tracking issue I've opened for the stabilization of SIMD
intrinsics
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