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rust/tests/mir-opt/building/async_await.b-{closure#0}.generator_resume.0.mir

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Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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// MIR for `b::{closure#0}` 0 generator_resume
/* generator_layout = GeneratorLayout {
field_tys: {
Bless mir-opt tests.
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_0: GeneratorSavedTy {
Disentangle `Debug` and `Display` for `Ty`. The `Debug` impl for `Ty` just calls the `Display` impl for `Ty`. This is surprising and annoying. In particular, it means `Debug` doesn't show as much information as `Debug` for `TyKind` does. And `Debug` is used in some user-facing error messages, which seems bad. This commit changes the `Debug` impl for `Ty` to call the `Debug` impl for `TyKind`. It also does a number of follow-up changes to preserve existing output, many of which involve inserting `with_no_trimmed_paths!` calls. It also adds `Display` impls for `UserType` and `Canonical`. Some tests have changes to expected output: - Those that use the `rustc_abi(debug)` attribute. - Those that use the `EMIT_MIR` annotation. In each case the output is slightly uglier than before. This isn't ideal, but it's pretty weird (particularly for the attribute) that the output is using `Debug` in the first place. They're fairly obscure attributes (I hadn't heard of them) so I'm not worried by this. For `async-is-unwindsafe.stderr`, there is one line that now lacks a full path. This is a consistency improvement, because all the other mentions of `Context` in this test lack a path.
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ty: Alias(
Opaque,
AliasTy {
args: [
],
def_id: DefId(0:7 ~ async_await[ccf8]::a::{opaque#0}),
},
),
Bless mir-opt tests.
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source_info: SourceInfo {
Tweak await span
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span: $DIR/async_await.rs:15:9: 15:14 (#8),
Bless mir-opt tests.
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scope: scope[0],
},
ignore_for_traits: false,
},
_1: GeneratorSavedTy {
Disentangle `Debug` and `Display` for `Ty`. The `Debug` impl for `Ty` just calls the `Display` impl for `Ty`. This is surprising and annoying. In particular, it means `Debug` doesn't show as much information as `Debug` for `TyKind` does. And `Debug` is used in some user-facing error messages, which seems bad. This commit changes the `Debug` impl for `Ty` to call the `Debug` impl for `TyKind`. It also does a number of follow-up changes to preserve existing output, many of which involve inserting `with_no_trimmed_paths!` calls. It also adds `Display` impls for `UserType` and `Canonical`. Some tests have changes to expected output: - Those that use the `rustc_abi(debug)` attribute. - Those that use the `EMIT_MIR` annotation. In each case the output is slightly uglier than before. This isn't ideal, but it's pretty weird (particularly for the attribute) that the output is using `Debug` in the first place. They're fairly obscure attributes (I hadn't heard of them) so I'm not worried by this. For `async-is-unwindsafe.stderr`, there is one line that now lacks a full path. This is a consistency improvement, because all the other mentions of `Context` in this test lack a path.
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ty: Alias(
Opaque,
AliasTy {
args: [
],
def_id: DefId(0:7 ~ async_await[ccf8]::a::{opaque#0}),
},
),
Bless mir-opt tests.
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source_info: SourceInfo {
Make async removal span more resilient to macro expansions
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span: $DIR/async_await.rs:16:9: 16:14 (#10),
Bless mir-opt tests.
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scope: scope[0],
},
ignore_for_traits: false,
},
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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},
variant_fields: {
Unresumed(0): [],
Returned (1): [],
Panicked (2): [],
Suspend0 (3): [_0],
Suspend1 (4): [_1],
},
storage_conflicts: BitMatrix(2x2) {
(_0, _0),
(_1, _1),
},
} */
fn b::{closure#0}(_1: Pin<&mut [async fn body@$DIR/async_await.rs:14:18: 17:2]>, _2: &mut Context<'_>) -> Poll<()> {
Remove comments from mir-opt MIR dumps
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debug _task_context => _38;
let mut _0: std::task::Poll<()>;
let _3: ();
let mut _4: impl std::future::Future<Output = ()>;
let mut _5: impl std::future::Future<Output = ()>;
let mut _6: impl std::future::Future<Output = ()>;
let mut _7: ();
let _8: ();
let mut _9: std::task::Poll<()>;
let mut _10: std::pin::Pin<&mut impl std::future::Future<Output = ()>>;
let mut _11: &mut impl std::future::Future<Output = ()>;
let mut _12: &mut impl std::future::Future<Output = ()>;
let mut _13: &mut std::task::Context<'_>;
let mut _14: &mut std::task::Context<'_>;
let mut _15: &mut std::task::Context<'_>;
let mut _16: isize;
let mut _18: !;
let mut _19: &mut std::task::Context<'_>;
let mut _20: ();
let mut _21: impl std::future::Future<Output = ()>;
let mut _22: impl std::future::Future<Output = ()>;
let mut _23: impl std::future::Future<Output = ()>;
let _24: ();
let mut _25: std::task::Poll<()>;
let mut _26: std::pin::Pin<&mut impl std::future::Future<Output = ()>>;
let mut _27: &mut impl std::future::Future<Output = ()>;
let mut _28: &mut impl std::future::Future<Output = ()>;
let mut _29: &mut std::task::Context<'_>;
let mut _30: &mut std::task::Context<'_>;
let mut _31: &mut std::task::Context<'_>;
let mut _32: isize;
let mut _34: !;
let mut _35: &mut std::task::Context<'_>;
let mut _36: ();
let mut _37: ();
let mut _38: &mut std::task::Context<'_>;
let mut _39: u32;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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scope 1 {
Remove comments from mir-opt MIR dumps
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debug __awaitee => (((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2])) as variant#3).0: impl std::future::Future<Output = ()>);
let _17: ();
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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scope 2 {
}
scope 3 {
Remove comments from mir-opt MIR dumps
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debug result => _17;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
}
scope 4 {
Remove comments from mir-opt MIR dumps
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debug __awaitee => (((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2])) as variant#4).0: impl std::future::Future<Output = ()>);
let _33: ();
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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scope 5 {
}
scope 6 {
Remove comments from mir-opt MIR dumps
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debug result => _33;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
}
bb0: {
Remove comments from mir-opt MIR dumps
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_39 = discriminant((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2])));
switchInt(move _39) -> [0: bb1, 1: bb28, 3: bb26, 4: bb27, otherwise: bb29];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb1: {
Remove comments from mir-opt MIR dumps
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_38 = move _2;
StorageLive(_3);
StorageLive(_4);
StorageLive(_5);
_5 = a() -> [return: bb2, unwind unreachable];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb2: {
Remove comments from mir-opt MIR dumps
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_4 = <impl Future<Output = ()> as IntoFuture>::into_future(move _5) -> [return: bb3, unwind unreachable];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb3: {
Remove comments from mir-opt MIR dumps
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StorageDead(_5);
nop;
(((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2])) as variant#3).0: impl std::future::Future<Output = ()>) = move _4;
goto -> bb4;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb4: {
Remove comments from mir-opt MIR dumps
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StorageLive(_8);
StorageLive(_9);
StorageLive(_10);
StorageLive(_11);
StorageLive(_12);
_12 = &mut (((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2])) as variant#3).0: impl std::future::Future<Output = ()>);
_11 = &mut (*_12);
_10 = Pin::<&mut impl Future<Output = ()>>::new_unchecked(move _11) -> [return: bb5, unwind unreachable];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb5: {
Remove comments from mir-opt MIR dumps
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StorageDead(_11);
StorageLive(_13);
StorageLive(_14);
StorageLive(_15);
_15 = _38;
_14 = move _15;
goto -> bb6;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb6: {
Remove comments from mir-opt MIR dumps
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_13 = &mut (*_14);
StorageDead(_15);
_9 = <impl Future<Output = ()> as Future>::poll(move _10, move _13) -> [return: bb7, unwind unreachable];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb7: {
Remove comments from mir-opt MIR dumps
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StorageDead(_13);
StorageDead(_10);
_16 = discriminant(_9);
switchInt(move _16) -> [0: bb10, 1: bb8, otherwise: bb9];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb8: {
Remove comments from mir-opt MIR dumps
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_8 = const ();
StorageDead(_14);
StorageDead(_12);
StorageDead(_9);
StorageDead(_8);
StorageLive(_19);
StorageLive(_20);
_20 = ();
_0 = Poll::<()>::Pending;
discriminant((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2]))) = 3;
return;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb9: {
Remove comments from mir-opt MIR dumps
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unreachable;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb10: {
Remove comments from mir-opt MIR dumps
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StorageLive(_17);
_17 = ((_9 as Ready).0: ());
_3 = _17;
StorageDead(_17);
StorageDead(_14);
StorageDead(_12);
StorageDead(_9);
StorageDead(_8);
goto -> bb12;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb11: {
Remove comments from mir-opt MIR dumps
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StorageDead(_20);
_38 = move _19;
StorageDead(_19);
_7 = const ();
goto -> bb4;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb12: {
Remove comments from mir-opt MIR dumps
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nop;
goto -> bb13;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb13: {
Remove comments from mir-opt MIR dumps
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StorageDead(_4);
StorageDead(_3);
StorageLive(_21);
StorageLive(_22);
_22 = a() -> [return: bb14, unwind unreachable];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb14: {
Remove comments from mir-opt MIR dumps
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_21 = <impl Future<Output = ()> as IntoFuture>::into_future(move _22) -> [return: bb15, unwind unreachable];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb15: {
Remove comments from mir-opt MIR dumps
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StorageDead(_22);
nop;
(((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2])) as variant#4).0: impl std::future::Future<Output = ()>) = move _21;
goto -> bb16;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb16: {
Remove comments from mir-opt MIR dumps
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StorageLive(_24);
StorageLive(_25);
StorageLive(_26);
StorageLive(_27);
StorageLive(_28);
_28 = &mut (((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2])) as variant#4).0: impl std::future::Future<Output = ()>);
_27 = &mut (*_28);
_26 = Pin::<&mut impl Future<Output = ()>>::new_unchecked(move _27) -> [return: bb17, unwind unreachable];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb17: {
Remove comments from mir-opt MIR dumps
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StorageDead(_27);
StorageLive(_29);
StorageLive(_30);
StorageLive(_31);
_31 = _38;
_30 = move _31;
goto -> bb18;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb18: {
Remove comments from mir-opt MIR dumps
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_29 = &mut (*_30);
StorageDead(_31);
_25 = <impl Future<Output = ()> as Future>::poll(move _26, move _29) -> [return: bb19, unwind unreachable];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb19: {
Remove comments from mir-opt MIR dumps
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StorageDead(_29);
StorageDead(_26);
_32 = discriminant(_25);
switchInt(move _32) -> [0: bb21, 1: bb20, otherwise: bb9];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
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}
bb20: {
Remove comments from mir-opt MIR dumps
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_24 = const ();
StorageDead(_30);
StorageDead(_28);
StorageDead(_25);
StorageDead(_24);
StorageLive(_35);
StorageLive(_36);
_36 = ();
_0 = Poll::<()>::Pending;
discriminant((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2]))) = 4;
return;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
2022-12-20 08:15:29 -06:00
}
bb21: {
Remove comments from mir-opt MIR dumps
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StorageLive(_33);
_33 = ((_25 as Ready).0: ());
_37 = _33;
StorageDead(_33);
StorageDead(_30);
StorageDead(_28);
StorageDead(_25);
StorageDead(_24);
goto -> bb23;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
2022-12-20 08:15:29 -06:00
}
Remove duplicate unreachable blocks
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bb22: {
Remove comments from mir-opt MIR dumps
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StorageDead(_36);
_38 = move _35;
StorageDead(_35);
_7 = const ();
goto -> bb16;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
2022-12-20 08:15:29 -06:00
}
Remove duplicate unreachable blocks
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bb23: {
Remove comments from mir-opt MIR dumps
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nop;
goto -> bb24;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
2022-12-20 08:15:29 -06:00
}
Remove duplicate unreachable blocks
2023-02-24 15:32:10 -06:00
bb24: {
Remove comments from mir-opt MIR dumps
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StorageDead(_21);
goto -> bb25;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
2022-12-20 08:15:29 -06:00
}
Remove duplicate unreachable blocks
2023-02-24 15:32:10 -06:00
bb25: {
Remove comments from mir-opt MIR dumps
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_0 = Poll::<()>::Ready(move _37);
discriminant((*(_1.0: &mut [async fn body@$DIR/async_await.rs:14:18: 17:2]))) = 1;
return;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
2022-12-20 08:15:29 -06:00
}
Remove duplicate unreachable blocks
2023-02-24 15:32:10 -06:00
bb26: {
Remove comments from mir-opt MIR dumps
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StorageLive(_3);
StorageLive(_4);
StorageLive(_19);
StorageLive(_20);
_19 = move _2;
goto -> bb11;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
2022-12-20 08:15:29 -06:00
}
Remove duplicate unreachable blocks
2023-02-24 15:32:10 -06:00
bb27: {
Remove comments from mir-opt MIR dumps
2023-06-06 08:47:00 -05:00
StorageLive(_21);
StorageLive(_35);
StorageLive(_36);
_35 = move _2;
goto -> bb22;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
2022-12-20 08:15:29 -06:00
}
Remove duplicate unreachable blocks
2023-02-24 15:32:10 -06:00
bb28: {
Run `AbortUnwindingCalls` after generator transform
2023-06-28 10:05:17 -05:00
assert(const false, "`async fn` resumed after completion") -> [success: bb28, unwind unreachable];
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
2022-12-20 08:15:29 -06:00
}
Remove duplicate unreachable blocks
2023-02-24 15:32:10 -06:00
bb29: {
Remove comments from mir-opt MIR dumps
2023-06-06 08:47:00 -05:00
unreachable;
Transform async ResumeTy in generator transform - Eliminates all the `get_context` calls that async lowering created. - Replace all `Local` `ResumeTy` types with `&mut Context<'_>`. The `Local`s that have their types replaced are: - The `resume` argument itself. - The argument to `get_context`. - The yielded value of a `yield`. The `ResumeTy` hides a `&mut Context<'_>` behind an unsafe raw pointer, and the `get_context` function is being used to convert that back to a `&mut Context<'_>`. Ideally the async lowering would not use the `ResumeTy`/`get_context` indirection, but rather directly use `&mut Context<'_>`, however that would currently lead to higher-kinded lifetime errors. See <https://github.com/rust-lang/rust/issues/105501>. The async lowering step and the type / lifetime inference / checking are still using the `ResumeTy` indirection for the time being, and that indirection is removed here. After this transform, the generator body only knows about `&mut Context<'_>`.
2022-12-20 08:15:29 -06:00
}
}
Reference in New Issue Copy Permalink