1 files changed, 58 insertions, 0 deletions
diff --git a/tests/ui/simd/intrinsic/generic-reduction.rs b/tests/ui/simd/intrinsic/generic-reduction.rs
new file mode 100644
index 00000000000..ede4b26d19c
--- /dev/null
+++ b/tests/ui/simd/intrinsic/generic-reduction.rs
@@ -0,0 +1,58 @@
+// build-fail
+// ignore-emscripten
+
+// Test that the simd_reduce_{op} intrinsics produce ok-ish error
+// messages when misused.
+
+#![feature(repr_simd, platform_intrinsics)]
+#![allow(non_camel_case_types)]
+
+#[repr(simd)]
+#[derive(Copy, Clone)]
+pub struct f32x4(pub f32, pub f32, pub f32, pub f32);
+
+#[repr(simd)]
+#[derive(Copy, Clone)]
+pub struct u32x4(pub u32, pub u32, pub u32, pub u32);
+
+
+extern "platform-intrinsic" {
+    fn simd_reduce_add_ordered<T, U>(x: T, y: U) -> U;
+    fn simd_reduce_mul_ordered<T, U>(x: T, y: U) -> U;
+    fn simd_reduce_and<T, U>(x: T) -> U;
+    fn simd_reduce_or<T, U>(x: T) -> U;
+    fn simd_reduce_xor<T, U>(x: T) -> U;
+    fn simd_reduce_all<T>(x: T) -> bool;
+    fn simd_reduce_any<T>(x: T) -> bool;
+}
+
+fn main() {
+    let x = u32x4(0, 0, 0, 0);
+    let z = f32x4(0.0, 0.0, 0.0, 0.0);
+
+    unsafe {
+        simd_reduce_add_ordered(z, 0);
+        //~^ ERROR expected return type `f32` (element of input `f32x4`), found `i32`
+        simd_reduce_mul_ordered(z, 1);
+        //~^ ERROR expected return type `f32` (element of input `f32x4`), found `i32`
+
+        let _: f32 = simd_reduce_and(x);
+        //~^ ERROR expected return type `u32` (element of input `u32x4`), found `f32`
+        let _: f32 = simd_reduce_or(x);
+        //~^ ERROR expected return type `u32` (element of input `u32x4`), found `f32`
+        let _: f32 = simd_reduce_xor(x);
+        //~^ ERROR expected return type `u32` (element of input `u32x4`), found `f32`
+
+        let _: f32 = simd_reduce_and(z);
+        //~^ ERROR unsupported simd_reduce_and from `f32x4` with element `f32` to `f32`
+        let _: f32 = simd_reduce_or(z);
+        //~^ ERROR unsupported simd_reduce_or from `f32x4` with element `f32` to `f32`
+        let _: f32 = simd_reduce_xor(z);
+        //~^ ERROR unsupported simd_reduce_xor from `f32x4` with element `f32` to `f32`
+
+        let _: bool = simd_reduce_all(z);
+        //~^ ERROR unsupported simd_reduce_all from `f32x4` with element `f32` to `bool`
+        let _: bool = simd_reduce_any(z);
+        //~^ ERROR unsupported simd_reduce_any from `f32x4` with element `f32` to `bool`
+    }
+}