Stabilize #[coverage] attribute

src/doc/unstable-book/src/language-features/coverage-attribute.md

@@ -1,30 +0,0 @@
-# `coverage_attribute`
-
-The tracking issue for this feature is: [#84605]
-
-[#84605]: https://github.com/rust-lang/rust/issues/84605
-
----
-
-The `coverage` attribute can be used to selectively disable coverage
-instrumentation in an annotated function. This might be useful to:
-
--   Avoid instrumentation overhead in a performance critical function
--   Avoid generating coverage for a function that is not meant to be executed,
-    but still target 100% coverage for the rest of the program.
-
-## Example
-
-```rust
-#![feature(coverage_attribute)]
-
-// `foo()` will get coverage instrumentation (by default)
-fn foo() {
-  // ...
-}
-
-#[coverage(off)]
-fn bar() {
-  // ...
-}
-```

src/tools/rust-analyzer/crates/hir-expand/src/inert_attr_macro.rs

@@ -237,7 +237,7 @@ pub const INERT_ATTRIBUTES: &[BuiltinAttribute] = &[
         template!(List: "address, kcfi, memory, thread"), DuplicatesOk,
         experimental!(no_sanitize)
     ),
-    gated!(coverage, Normal, template!(Word, List: "on|off"), WarnFollowing, coverage_attribute, experimental!(coverage)),
+    ungated!(coverage, Normal, template!(Word, List: "on|off"), WarnFollowing),
 
     ungated!(
         doc, Normal, template!(List: "hidden|inline|...", NameValueStr: "string"), DuplicatesOk