rust/tests/codegen/mir_zst_stores.rs

20 lines
344 B
Rust

//@ compile-flags: -C no-prepopulate-passes
#![crate_type = "lib"]
use std::marker::PhantomData;
#[derive(Copy, Clone)]
struct Zst {
phantom: PhantomData<Zst>,
}
// CHECK-LABEL: @mir
// CHECK-NOT: store{{.*}}undef
#[no_mangle]
pub fn mir() {
let x = Zst { phantom: PhantomData };
let y = (x, 0);
drop(y);
drop((0, x));
}