1 files changed, 91 insertions, 0 deletions
diff --git a/tests/ui/simd/intrinsic/generic-arithmetic-saturating-pass.rs b/tests/ui/simd/intrinsic/generic-arithmetic-saturating-pass.rs
new file mode 100644
index 000000000..c11d14b99
--- /dev/null
+++ b/tests/ui/simd/intrinsic/generic-arithmetic-saturating-pass.rs
@@ -0,0 +1,91 @@
+// run-pass
+// ignore-emscripten
+
+#![allow(non_camel_case_types)]
+#![feature(repr_simd, platform_intrinsics)]
+
+#[repr(simd)]
+#[derive(Copy, Clone, PartialEq, Debug)]
+struct u32x4(pub u32, pub u32, pub u32, pub u32);
+
+#[repr(simd)]
+#[derive(Copy, Clone)]
+struct I32<const N: usize>([i32; N]);
+
+extern "platform-intrinsic" {
+    fn simd_saturating_add<T>(x: T, y: T) -> T;
+    fn simd_saturating_sub<T>(x: T, y: T) -> T;
+}
+
+fn main() {
+    // unsigned
+    {
+        const M: u32 = u32::MAX;
+
+        let a = u32x4(1, 2, 3, 4);
+        let b = u32x4(2, 4, 6, 8);
+        let m = u32x4(M, M, M, M);
+        let m1 = u32x4(M - 1, M - 1, M - 1, M - 1);
+        let z = u32x4(0, 0, 0, 0);
+
+        unsafe {
+            assert_eq!(simd_saturating_add(z, z), z);
+            assert_eq!(simd_saturating_add(z, a), a);
+            assert_eq!(simd_saturating_add(b, z), b);
+            assert_eq!(simd_saturating_add(a, a), b);
+            assert_eq!(simd_saturating_add(a, m), m);
+            assert_eq!(simd_saturating_add(m, b), m);
+            assert_eq!(simd_saturating_add(m1, a), m);
+
+            assert_eq!(simd_saturating_sub(b, z), b);
+            assert_eq!(simd_saturating_sub(b, a), a);
+            assert_eq!(simd_saturating_sub(a, a), z);
+            assert_eq!(simd_saturating_sub(a, b), z);
+            assert_eq!(simd_saturating_sub(a, m1), z);
+            assert_eq!(simd_saturating_sub(b, m1), z);
+        }
+    }
+
+    // signed
+    {
+        const MIN: i32 = i32::MIN;
+        const MAX: i32 = i32::MAX;
+
+        let a = I32::<4>([1, 2, 3, 4]);
+        let b = I32::<4>([2, 4, 6, 8]);
+        let c = I32::<4>([-1, -2, -3, -4]);
+        let d = I32::<4>([-2, -4, -6, -8]);
+
+        let max = I32::<4>([MAX, MAX, MAX, MAX]);
+        let max1 = I32::<4>([MAX - 1, MAX - 1, MAX - 1, MAX - 1]);
+        let min = I32::<4>([MIN, MIN, MIN, MIN]);
+        let min1 = I32::<4>([MIN + 1, MIN + 1, MIN + 1, MIN + 1]);
+
+        let z = I32::<4>([0, 0, 0, 0]);
+
+        unsafe {
+            assert_eq!(simd_saturating_add(z, z).0, z.0);
+            assert_eq!(simd_saturating_add(z, a).0, a.0);
+            assert_eq!(simd_saturating_add(b, z).0, b.0);
+            assert_eq!(simd_saturating_add(a, a).0, b.0);
+            assert_eq!(simd_saturating_add(a, max).0, max.0);
+            assert_eq!(simd_saturating_add(max, b).0, max.0);
+            assert_eq!(simd_saturating_add(max1, a).0, max.0);
+            assert_eq!(simd_saturating_add(min1, z).0, min1.0);
+            assert_eq!(simd_saturating_add(min, z).0, min.0);
+            assert_eq!(simd_saturating_add(min1, c).0, min.0);
+            assert_eq!(simd_saturating_add(min, c).0, min.0);
+            assert_eq!(simd_saturating_add(min1, d).0, min.0);
+            assert_eq!(simd_saturating_add(min, d).0, min.0);
+
+            assert_eq!(simd_saturating_sub(b, z).0, b.0);
+            assert_eq!(simd_saturating_sub(b, a).0, a.0);
+            assert_eq!(simd_saturating_sub(a, a).0, z.0);
+            assert_eq!(simd_saturating_sub(a, b).0, c.0);
+            assert_eq!(simd_saturating_sub(z, max).0, min1.0);
+            assert_eq!(simd_saturating_sub(min1, z).0, min1.0);
+            assert_eq!(simd_saturating_sub(min1, a).0, min.0);
+            assert_eq!(simd_saturating_sub(min1, b).0, min.0);
+        }
+    }
+}