rust/tests/mir-opt/building/async_await.rs

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// 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
}