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Rollup merge of #134295 - compiler-errors:smir-async-closure, r=oli-obk

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Encode coroutine-closures in SMIR

Fixes #134246

r? oli-obk
This commit is contained in:
Matthias Krüger 2024-12-14 14:08:00 +01:00 • committed by GitHub
commit b0597b4eed
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GPG key ID: B5690EEEBB952194
9 changed files with 137 additions and 4 deletions
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12
tests/ui/stable-mir-print/async-closure.rs Normal file
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//@ compile-flags: -Z unpretty=stable-mir --crate-type lib -C panic=abort
//@ check-pass
//@ only-x86_64
//@ edition: 2024
//@ needs-unwind unwind edges are different with panic=abort
pub fn foo() {
let y = 0;
let x = async || {
let y = y;
};
}

90
tests/ui/stable-mir-print/async-closure.stdout Normal file
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// WARNING: This is highly experimental output it's intended for stable-mir developers only.
// If you find a bug or want to improve the output open a issue at https://github.com/rust-lang/project-stable-mir.
fn foo() -> () {
let mut _0: ();
let _1: i32;
let _2: {async closure@$DIR/async-closure.rs:9:13: 9:21};
let mut _3: &i32;
debug y => _1;
debug x => _2;
bb0: {
_1 = 0_i32;
_3 = &_1;
_2 = {coroutine-closure@$DIR/async-closure.rs:9:13: 9:21}(move _3);
return;
}
}
fn foo::{closure#0}(_1: &{async closure@$DIR/async-closure.rs:9:13: 9:21}) -> {async closure body@$DIR/async-closure.rs:9:22: 11:6} {
let mut _0: {async closure body@$DIR/async-closure.rs:9:22: 11:6};
let mut _2: &i32;
debug y => (*((*_1).0: &i32));
bb0: {
_2 = CopyForDeref(((*_1).0: &i32));
_0 = {coroutine@$DIR/async-closure.rs:9:22: 11:6}(_2);
return;
}
}
fn foo::{closure#0}::{closure#0}(_1: Pin<&mut {async closure body@$DIR/async-closure.rs:9:22: 11:6}>, _2: &mut Context<'_>) -> Poll<()> {
let mut _0: Poll<()>;
let _3: i32;
let mut _4: &i32;
let mut _5: u32;
let mut _6: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6};
let mut _7: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6};
let mut _8: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6};
debug _task_context => _2;
debug y => (*((*(_1.0: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6})).0: &i32));
debug y => _3;
bb0: {
_6 = CopyForDeref((_1.0: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6}));
_5 = discriminant((*_6));
switchInt(move _5) -> [0: bb1, 1: bb2, otherwise: bb3];
}
bb1: {
_7 = CopyForDeref((_1.0: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6}));
_4 = CopyForDeref(((*_7).0: &i32));
_3 = (*_4);
_0 = std::task::Poll::Ready(());
_8 = CopyForDeref((_1.0: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6}));
discriminant((*_8) = 1;
return;
}
bb2: {
assert(false, `async fn` resumed after completion) -> [success: bb2, unwind unreachable];
}
bb3: {
unreachable;
}
}
fn foo::{closure#0}::{closure#1}(_1: Pin<&mut {async closure body@$DIR/async-closure.rs:9:22: 11:6}>, _2: &mut Context<'_>) -> Poll<()> {
let mut _0: Poll<()>;
let _3: i32;
let mut _4: &i32;
let mut _5: u32;
let mut _6: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6};
let mut _7: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6};
let mut _8: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6};
debug _task_context => _2;
debug y => (*((*(_1.0: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6})).0: &i32));
debug y => _3;
bb0: {
_6 = CopyForDeref((_1.0: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6}));
_5 = discriminant((*_6));
switchInt(move _5) -> [0: bb1, 1: bb2, otherwise: bb3];
}
bb1: {
_7 = CopyForDeref((_1.0: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6}));
_4 = CopyForDeref(((*_7).0: &i32));
_3 = (*_4);
_0 = std::task::Poll::Ready(());
_8 = CopyForDeref((_1.0: &mut {async closure body@$DIR/async-closure.rs:9:22: 11:6}));
discriminant((*_8) = 1;
return;
}
bb2: {
assert(false, `async fn` resumed after completion) -> [success: bb2, unwind unreachable];
}
bb3: {
unreachable;
}
}