1 files changed, 31 insertions, 0 deletions
diff --git a/library/portable-simd/crates/core_simd/src/vendor.rs b/library/portable-simd/crates/core_simd/src/vendor.rs
new file mode 100644
index 000000000..9fb70218c
--- /dev/null
+++ b/library/portable-simd/crates/core_simd/src/vendor.rs
@@ -0,0 +1,31 @@
+/// Provides implementations of `From<$a> for $b` and `From<$b> for $a` that transmutes the value.
+#[allow(unused)]
+macro_rules! from_transmute {
+    { unsafe $a:ty => $b:ty } => {
+        from_transmute!{ @impl $a => $b }
+        from_transmute!{ @impl $b => $a }
+    };
+    { @impl $from:ty => $to:ty } => {
+        impl core::convert::From<$from> for $to {
+            #[inline]
+            fn from(value: $from) -> $to {
+                // Safety: transmuting between vectors is safe, but the caller of this macro
+                // checks the invariants
+                unsafe { core::mem::transmute(value) }
+            }
+        }
+    };
+}
+
+/// Conversions to x86's SIMD types.
+#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
+mod x86;
+
+#[cfg(any(target_arch = "wasm32"))]
+mod wasm32;
+
+#[cfg(any(target_arch = "aarch64", target_arch = "arm",))]
+mod arm;
+
+#[cfg(any(target_arch = "powerpc", target_arch = "powerpc64"))]
+mod powerpc;