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Support WASM SIMD's v128 type (#73)

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Due to the MSRV it is behind a feature gate.
This commit is contained in:
Christopher Serr 2021-10-15 21:46:52 +02:00 committed by GitHub
parent 9ea604addb
commit 944c90ca3f
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4 changed files with 12 additions and 1 deletions
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3
Cargo.toml
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@ -18,6 +18,7 @@ extern_crate_alloc = []
extern_crate_std = ["extern_crate_alloc"] extern_crate_std = ["extern_crate_alloc"]
zeroable_maybe_uninit = [] zeroable_maybe_uninit = []
min_const_generics = [] min_const_generics = []
wasm_simd = [] # Until >= 1.54.0 is MSRV this is an off-by-default feature.
# Do not use if you can avoid it, because this is unsound. # Do not use if you can avoid it, because this is unsound.
unsound_ptr_pod_impl = [] unsound_ptr_pod_impl = []
@ -35,6 +36,7 @@ features = [
"extern_crate_std", "extern_crate_std",
"zeroable_maybe_uninit", "zeroable_maybe_uninit",
"min_const_generics", "min_const_generics",
"wasm_simd",
] ]
[package.metadata.playground] [package.metadata.playground]
@ -45,4 +47,5 @@ features = [
"extern_crate_std", "extern_crate_std",
"zeroable_maybe_uninit", "zeroable_maybe_uninit",
"min_const_generics", "min_const_generics",
"wasm_simd",
] ]

4
src/lib.rs
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@ -37,6 +37,8 @@
//! methods related to `Box` and `Vec`. Note that the `docs.rs` documentation //! methods related to `Box` and `Vec`. Note that the `docs.rs` documentation
//! is always built with `extern_crate_alloc` cargo feature enabled. //! is always built with `extern_crate_alloc` cargo feature enabled.
#[cfg(all(target_arch = "wasm32", feature = "wasm_simd"))]
use core::arch::wasm32;
#[cfg(target_arch = "x86")] #[cfg(target_arch = "x86")]
use core::arch::x86; use core::arch::x86;
#[cfg(target_arch = "x86_64")] #[cfg(target_arch = "x86_64")]
@ -115,7 +117,7 @@ fn something_went_wrong(_src: &str, _err: PodCastError) -> ! {
panic!("{src}>{err:?}", src = _src, err = _err); panic!("{src}>{err:?}", src = _src, err = _err);
// Note: On the spirv targets from [rust-gpu](https://github.com/EmbarkStudios/rust-gpu) // Note: On the spirv targets from [rust-gpu](https://github.com/EmbarkStudios/rust-gpu)
// panic formatting cannot be used. We we just give a generic error message // panic formatting cannot be used. We we just give a generic error message
// The chance that the panicing version of these functions will ever get called // The chance that the panicking version of these functions will ever get called
// on spir-v targets with invalid inputs is small, but giving a simple error // on spir-v targets with invalid inputs is small, but giving a simple error
// message is better than no error message at all. // message is better than no error message at all.
#[cfg(target_arch = "spirv")] #[cfg(target_arch = "spirv")]

3
src/pod.rs
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@ -80,6 +80,9 @@ impl_unsafe_marker_for_array!(
512, 1024, 2048, 4096 512, 1024, 2048, 4096
); );
#[cfg(all(target_arch = "wasm32", feature = "wasm_simd"))]
unsafe impl Pod for wasm32::v128 {}
#[cfg(target_arch = "x86")] #[cfg(target_arch = "x86")]
unsafe impl Pod for x86::__m128i {} unsafe impl Pod for x86::__m128i {}
#[cfg(target_arch = "x86")] #[cfg(target_arch = "x86")]

3
src/zeroable.rs
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@ -119,6 +119,9 @@ impl_unsafe_marker_for_array!(
512, 1024, 2048, 4096 512, 1024, 2048, 4096
); );
#[cfg(all(target_arch = "wasm32", feature = "wasm_simd"))]
unsafe impl Zeroable for wasm32::v128 {}
#[cfg(target_arch = "x86")] #[cfg(target_arch = "x86")]
unsafe impl Zeroable for x86::__m128i {} unsafe impl Zeroable for x86::__m128i {}
#[cfg(target_arch = "x86")] #[cfg(target_arch = "x86")]