1 files changed, 42 insertions, 0 deletions
diff --git a/src/test/ui/simd/intrinsic/inlining-issue67557.rs b/src/test/ui/simd/intrinsic/inlining-issue67557.rs
new file mode 100644
index 000000000..0d1542709
--- /dev/null
+++ b/src/test/ui/simd/intrinsic/inlining-issue67557.rs
@@ -0,0 +1,42 @@
+// This used to cause assert_10_13 to unexpectingly fail, due to simd_shuffle_indices being passed
+// the wrong Instance, causing issues with inlining. See #67557.
+//
+// run-pass
+// compile-flags: -Zmir-opt-level=4
+#![feature(platform_intrinsics, repr_simd)]
+
+extern "platform-intrinsic" {
+    fn simd_shuffle2<T, U>(x: T, y: T, idx: [u32; 2]) -> U;
+}
+
+#[repr(simd)]
+#[derive(Debug, PartialEq)]
+struct Simd2(u8, u8);
+
+fn main() {
+    unsafe {
+        const IDX: [u32; 2] = [0, 1];
+        let p_res: Simd2 = simd_shuffle2(Simd2(10, 11), Simd2(12, 13), IDX);
+        let a_res: Simd2 = inline_me();
+
+        assert_10_11(p_res);
+        assert_10_13(a_res);
+    }
+}
+
+#[inline(never)]
+fn assert_10_11(x: Simd2) {
+    assert_eq!(x, Simd2(10, 11));
+}
+
+#[inline(never)]
+fn assert_10_13(x: Simd2) {
+    assert_eq!(x, Simd2(10, 13));
+}
+
+
+#[inline(always)]
+unsafe fn inline_me() -> Simd2 {
+    const IDX: [u32; 2] = [0, 3];
+    simd_shuffle2(Simd2(10, 11), Simd2(12, 13), IDX)
+}