tests/mir-opt/building/async_await.rs

// This test makes sure that the generator MIR pass eliminates all calls to
// `get_context`, and that the MIR argument type for an async fn and all locals
// related to `yield` are `&mut Context`, and its return type is `Poll`.

// edition:2018
// compile-flags: -C panic=abort

#![crate_type = "lib"]

// EMIT_MIR async_await.a-{closure#0}.generator_resume.0.mir
async fn a() {}

// EMIT_MIR async_await.b-{closure#0}.generator_resume.0.mir
pub async fn b() {
    a().await;
    a().await
}