Rename tests/codegen into tests/codegen-llvm

tests/codegen-llvm/array-clone.rs

@@ -0,0 +1,15 @@
+//@ compile-flags: -Copt-level=3
+
+#![crate_type = "lib"]
+
+// CHECK-LABEL: @array_clone
+#[no_mangle]
+pub fn array_clone(a: &[u8; 2]) -> [u8; 2] {
+    // CHECK-NOT: getelementptr
+    // CHECK-NOT: load i8
+    // CHECK-NOT: zext
+    // CHECK-NOT: shl
+    // CHECK: load i16
+    // CHECK-NEXT: ret i16
+    a.clone()
+}