1 files changed, 40 insertions, 0 deletions
diff --git a/src/test/ui/intrinsics/const-eval-select-x86_64.rs b/src/test/ui/intrinsics/const-eval-select-x86_64.rs
new file mode 100644
index 000000000..f3924acf0
--- /dev/null
+++ b/src/test/ui/intrinsics/const-eval-select-x86_64.rs
@@ -0,0 +1,40 @@
+// run-pass
+// only-x86_64
+
+#![feature(const_eval_select)]
+#![feature(core_intrinsics)]
+use std::intrinsics::const_eval_select;
+use std::arch::x86_64::*;
+use std::mem::transmute;
+
+const fn eq_ct(x: [i32; 4], y: [i32; 4]) -> bool {
+    x[0] == y[0] && x[1] == y[1] && x[2] == y[2] && x[3] == y[3]
+}
+
+fn eq_rt(x: [i32; 4], y: [i32; 4]) -> bool {
+    unsafe {
+        let x = _mm_loadu_si128(&x as *const _ as *const _);
+        let y = _mm_loadu_si128(&y as *const _ as *const _);
+        let r = _mm_cmpeq_epi32(x, y);
+        let r = _mm_movemask_ps(transmute(r) );
+        r == 0b1111
+    }
+}
+
+const fn eq(x: [i32; 4], y: [i32; 4]) -> bool {
+    unsafe {
+        const_eval_select((x, y), eq_ct, eq_rt)
+    }
+}
+
+fn main() {
+    const X: bool = eq([0, 1, 2, 3], [0, 1, 2, 3]);
+    assert_eq!(X, true);
+    let x = eq([0, 1, 2, 3], [0, 1, 2, 3]);
+    assert_eq!(x, true);
+
+    const Y: bool = eq([0, 1, 2, 3], [0, 1, 3, 2]);
+    assert_eq!(Y, false);
+    let y = eq([0, 1, 2, 3], [0, 1, 3, 2]);
+    assert_eq!(y, false);
+}