1 files changed, 69 insertions, 0 deletions
diff --git a/third_party/rust/packed_simd/src/codegen/reductions/mask.rs b/third_party/rust/packed_simd/src/codegen/reductions/mask.rs
new file mode 100644
index 0000000000..a78bcc5632
--- /dev/null
+++ b/third_party/rust/packed_simd/src/codegen/reductions/mask.rs
@@ -0,0 +1,69 @@
+//! Code generation workaround for `all()` mask horizontal reduction.
+//!
+//! Works around [LLVM bug 36702].
+//!
+//! [LLVM bug 36702]: https://bugs.llvm.org/show_bug.cgi?id=36702
+#![allow(unused_macros)]
+
+use crate::*;
+
+pub(crate) trait All: crate::marker::Sized {
+    unsafe fn all(self) -> bool;
+}
+
+pub(crate) trait Any: crate::marker::Sized {
+    unsafe fn any(self) -> bool;
+}
+
+#[macro_use]
+mod fallback_impl;
+
+cfg_if! {
+    if #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] {
+        #[macro_use]
+        mod x86;
+    } else if #[cfg(all(target_arch = "arm", target_feature = "v7",
+                        target_feature = "neon",
+                        any(feature = "core_arch", libcore_neon)))] {
+        #[macro_use]
+        mod arm;
+    } else if #[cfg(all(target_arch = "aarch64", target_feature = "neon"))] {
+        #[macro_use]
+        mod aarch64;
+    } else {
+        #[macro_use]
+        mod fallback;
+    }
+}
+
+impl_mask_reductions!(m8x2);
+impl_mask_reductions!(m8x4);
+impl_mask_reductions!(m8x8);
+impl_mask_reductions!(m8x16);
+impl_mask_reductions!(m8x32);
+impl_mask_reductions!(m8x64);
+
+impl_mask_reductions!(m16x2);
+impl_mask_reductions!(m16x4);
+impl_mask_reductions!(m16x8);
+impl_mask_reductions!(m16x16);
+impl_mask_reductions!(m16x32);
+
+impl_mask_reductions!(m32x2);
+impl_mask_reductions!(m32x4);
+impl_mask_reductions!(m32x8);
+impl_mask_reductions!(m32x16);
+
+// FIXME: 64-bit single element vector
+// impl_mask_reductions!(m64x1);
+impl_mask_reductions!(m64x2);
+impl_mask_reductions!(m64x4);
+impl_mask_reductions!(m64x8);
+
+impl_mask_reductions!(m128x1);
+impl_mask_reductions!(m128x2);
+impl_mask_reductions!(m128x4);
+
+impl_mask_reductions!(msizex2);
+impl_mask_reductions!(msizex4);
+impl_mask_reductions!(msizex8);