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rust/tests/codegen/async-fn-debug-awaitee-field.rs

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async: Give predictable, reserved name to binding generated from .await expressions. This name makes it to debuginfo and allows debuggers to identify such bindings and their captured versions in suspended async fns.
2022-03-16 09:52:21 -05:00
// This test makes sure that the generator field capturing the awaitee in a `.await` expression
// is called "__awaitee" in debuginfo. This name must not be changed since debuggers and debugger
// extensions rely on the field having this name.
// ignore-tidy-linelength
// compile-flags: -C debuginfo=2 --edition=2018
Make test more robust to opts.
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#![crate_type = "lib"]
async: Give predictable, reserved name to binding generated from .await expressions. This name makes it to debuginfo and allows debuggers to identify such bindings and their captured versions in suspended async fns.
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Make test more robust to opts.
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pub async fn async_fn_test() {
async: Give predictable, reserved name to binding generated from .await expressions. This name makes it to debuginfo and allows debuggers to identify such bindings and their captured versions in suspended async fns.
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foo().await;
}
Make test more robust to opts.
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pub async fn foo() {}
Avoid `GenFuture` shim when compiling async constructs Previously, async constructs would be lowered to "normal" generators, with an additional `from_generator` / `GenFuture` shim in between to convert from `Generator` to `Future`. The compiler will now special-case these generators internally so that async constructs will *directly* implement `Future` without the need to go through the `from_generator` / `GenFuture` shim. The primary motivation for this change was hiding this implementation detail in stack traces and debuginfo, but it can in theory also help the optimizer as there is less abstractions to see through.
2022-11-18 15:56:22 -06:00
// NONMSVC: [[GEN:!.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "{async_fn_env#0}", scope: [[GEN_SCOPE:![0-9]*]],
[debuginfo] Update codegen tests for new cpp-like enum debuginfo encoding.
2022-08-12 05:00:02 -05:00
// MSVC: [[GEN:!.*]] = !DICompositeType(tag: DW_TAG_union_type, name: "enum2$<async_fn_debug_awaitee_field::async_fn_test::async_fn_env$0>",
Avoid `GenFuture` shim when compiling async constructs Previously, async constructs would be lowered to "normal" generators, with an additional `from_generator` / `GenFuture` shim in between to convert from `Generator` to `Future`. The compiler will now special-case these generators internally so that async constructs will *directly* implement `Future` without the need to go through the `from_generator` / `GenFuture` shim. The primary motivation for this change was hiding this implementation detail in stack traces and debuginfo, but it can in theory also help the optimizer as there is less abstractions to see through.
2022-11-18 15:56:22 -06:00
// NONMSVC: [[GEN_SCOPE:!.*]] = !DINamespace(name: "async_fn_test",
async: Give predictable, reserved name to binding generated from .await expressions. This name makes it to debuginfo and allows debuggers to identify such bindings and their captured versions in suspended async fns.
2022-03-16 09:52:21 -05:00
// CHECK: [[SUSPEND_STRUCT:!.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Suspend0", scope: [[GEN]],
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "__awaitee", scope: [[SUSPEND_STRUCT]], {{.*}}, baseType: [[AWAITEE_TYPE:![0-9]*]],
Avoid `GenFuture` shim when compiling async constructs Previously, async constructs would be lowered to "normal" generators, with an additional `from_generator` / `GenFuture` shim in between to convert from `Generator` to `Future`. The compiler will now special-case these generators internally so that async constructs will *directly* implement `Future` without the need to go through the `from_generator` / `GenFuture` shim. The primary motivation for this change was hiding this implementation detail in stack traces and debuginfo, but it can in theory also help the optimizer as there is less abstractions to see through.
2022-11-18 15:56:22 -06:00
// NONMSVC: [[AWAITEE_TYPE]] = !DICompositeType(tag: DW_TAG_structure_type, name: "{async_fn_env#0}", scope: [[AWAITEE_SCOPE:![0-9]*]],
// MSVC: [[AWAITEE_TYPE]] = !DICompositeType(tag: DW_TAG_union_type, name: "enum2$<async_fn_debug_awaitee_field::foo::async_fn_env$0>",
// NONMSVC: [[AWAITEE_SCOPE]] = !DINamespace(name: "foo",
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