1 files changed, 10 insertions, 0 deletions
diff --git a/tests/codegen-llvm/to_vec.rs b/tests/codegen-llvm/to_vec.rs
new file mode 100644
index 00000000000..4f6e77188d8
--- /dev/null
+++ b/tests/codegen-llvm/to_vec.rs
@@ -0,0 +1,10 @@
+//@ compile-flags: -Copt-level=3
+
+#![crate_type = "lib"]
+
+// CHECK-LABEL: @copy_to_vec
+#[no_mangle]
+fn copy_to_vec(s: &[u64]) -> Vec<u64> {
+    s.to_vec()
+    // CHECK: call void @llvm.memcpy
+}