//@ compile-flags: -O #![crate_type = "lib"] // CHECK-LABEL: @slice_fold_to_last #[no_mangle] pub fn slice_fold_to_last(slice: &[i32]) -> Option<&i32> { // CHECK-NOT: loop // CHECK-NOT: br // CHECK-NOT: call // CHECK: ret slice.iter().fold(None, |_, i| Some(i)) }