Auto merge of #148090 - jhpratt:rollup-n260hcy, r=jhpratt

Rollup of 5 pull requests

Successful merges:

 - rust-lang/rust#147406 (Remove needs-asm-support directive in tests with explicit targets)
 - rust-lang/rust#148056 (refactor(rustdoc): Remove redundant langstr checks)
 - rust-lang/rust#148065 (compiletest: Add concrete examples for some config/test path fields)
 - rust-lang/rust#148072 (Fix compiling `CondVar::wait_timeout` on 32-bit Apple platforms)
 - rust-lang/rust#148073 (test(frontmatter): Rename tests to make coverage more obvious)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

src/tests/directives.md

@@ -163,8 +163,10 @@ Some examples of `X` in `ignore-X` or `only-X`:
 The following directives will check rustc build settings and target
 settings:
 
-- `needs-asm-support` — ignores if it is running on a target that doesn't have
-  stable support for `asm!`
+- `needs-asm-support` — ignores if the **host** architecture doesn't have
+  stable support for `asm!`. For tests that cross-compile to explicit targets
+  via `--target`, use `needs-llvm-components` instead to ensure the appropriate
+  backend is available.
 - `needs-profiler-runtime` — ignores the test if the profiler runtime was not
   enabled for the target
   (`build.profiler = true` in rustc's `bootstrap.toml`)