1 files changed, 108 insertions, 0 deletions
diff --git a/third_party/rust/fake-simd/src/lib.rs b/third_party/rust/fake-simd/src/lib.rs
new file mode 100644
index 0000000000..22c8727edf
--- /dev/null
+++ b/third_party/rust/fake-simd/src/lib.rs
@@ -0,0 +1,108 @@
+#![no_std]
+use core::ops::{Add, BitAnd, BitOr, BitXor, Shl, Shr, Sub};
+
+#[derive(Clone, Copy, PartialEq, Eq)]
+#[allow(non_camel_case_types)]
+pub struct u32x4(pub u32, pub u32, pub u32, pub u32);
+
+impl Add for u32x4 {
+    type Output = u32x4;
+
+    #[inline(always)]
+    fn add(self, rhs: u32x4) -> u32x4 {
+        u32x4(
+            self.0.wrapping_add(rhs.0),
+            self.1.wrapping_add(rhs.1),
+            self.2.wrapping_add(rhs.2),
+            self.3.wrapping_add(rhs.3))
+    }
+}
+
+impl Sub for u32x4 {
+    type Output = u32x4;
+
+    #[inline(always)]
+    fn sub(self, rhs: u32x4) -> u32x4 {
+        u32x4(
+            self.0.wrapping_sub(rhs.0),
+            self.1.wrapping_sub(rhs.1),
+            self.2.wrapping_sub(rhs.2),
+            self.3.wrapping_sub(rhs.3))
+    }
+}
+
+impl BitAnd for u32x4 {
+    type Output = u32x4;
+
+    #[inline(always)]
+    fn bitand(self, rhs: u32x4) -> u32x4 {
+        u32x4(self.0 & rhs.0, self.1 & rhs.1, self.2 & rhs.2, self.3 & rhs.3)
+    }
+}
+
+impl BitOr for u32x4 {
+    type Output = u32x4;
+
+    #[inline(always)]
+    fn bitor(self, rhs: u32x4) -> u32x4 {
+        u32x4(self.0 | rhs.0, self.1 | rhs.1, self.2 | rhs.2, self.3 | rhs.3)
+    }
+}
+
+impl BitXor for u32x4 {
+    type Output = u32x4;
+
+    #[inline(always)]
+    fn bitxor(self, rhs: u32x4) -> u32x4 {
+        u32x4(self.0 ^ rhs.0, self.1 ^ rhs.1, self.2 ^ rhs.2, self.3 ^ rhs.3)
+    }
+}
+
+impl Shl<usize> for u32x4 {
+    type Output = u32x4;
+
+    #[inline(always)]
+    fn shl(self, amt: usize) -> u32x4 {
+        u32x4(self.0 << amt, self.1 << amt, self.2 << amt, self.3 << amt)
+    }
+}
+
+impl Shl<u32x4> for u32x4 {
+    type Output = u32x4;
+
+    #[inline(always)]
+    fn shl(self, rhs: u32x4) -> u32x4 {
+        u32x4(self.0 << rhs.0, self.1 << rhs.1, self.2 << rhs.2, self.3 << rhs.3)
+    }
+}
+
+impl Shr<usize> for u32x4 {
+    type Output = u32x4;
+
+    #[inline(always)]
+    fn shr(self, amt: usize) -> u32x4 {
+        u32x4(self.0 >> amt, self.1 >> amt, self.2 >> amt, self.3 >> amt)
+    }
+}
+
+impl Shr<u32x4> for u32x4 {
+    type Output = u32x4;
+
+    #[inline(always)]
+    fn shr(self, rhs: u32x4) -> u32x4 {
+        u32x4(self.0 >> rhs.0, self.1 >> rhs.1, self.2 >> rhs.2, self.3 >> rhs.3)
+    }
+}
+
+#[derive(Clone, Copy)]
+#[allow(non_camel_case_types)]
+pub struct u64x2(pub u64, pub u64);
+
+impl Add for u64x2 {
+    type Output = u64x2;
+
+    #[inline(always)]
+    fn add(self, rhs: u64x2) -> u64x2 {
+        u64x2(self.0.wrapping_add(rhs.0), self.1.wrapping_add(rhs.1))
+    }
+}