Encode optimized MIR of generators when emitting metadata

2 files changed, 34 insertions, 0 deletions

diff --git a/src/test/ui/generator/auxiliary/metadata-sufficient-for-layout.rs b/src/test/ui/generator/auxiliary/metadata-sufficient-for-layout.rs
new file mode 100644
index 00000000000..207c2735f88
--- /dev/null
+++ b/src/test/ui/generator/auxiliary/metadata-sufficient-for-layout.rs
@@ -0,0 +1,11 @@
+// compile-flags: --emit metadata
+#![feature(generators, generator_trait)]
+
+use std::marker::Unpin;
+use std::ops::Generator;
+
+pub fn g() -> impl Generator<(), Yield = (), Return = ()> {
+    || {
+        yield;
+    }
+}
diff --git a/src/test/ui/generator/metadata-sufficient-for-layout.rs b/src/test/ui/generator/metadata-sufficient-for-layout.rs
new file mode 100644
index 00000000000..9c82359a0be
--- /dev/null
+++ b/src/test/ui/generator/metadata-sufficient-for-layout.rs
@@ -0,0 +1,23 @@
+// Check that the layout of a generator is available when auxiliary crate
+// is compiled with --emit metadata.
+//
+// Regression test for #80998.
+//
+// aux-build:metadata-sufficient-for-layout.rs
+// check-pass
+
+#![feature(type_alias_impl_trait)]
+#![feature(generator_trait)]
+
+extern crate metadata_sufficient_for_layout;
+
+use std::ops::Generator;
+
+type F = impl Generator<(), Yield = (), Return = ()>;
+
+// Static queries the layout of the generator.
+static A: Option<F> = None;
+
+fn f() -> F { metadata_sufficient_for_layout::g() }
+
+fn main() {}