[^note-instrument-coverage]: Note: `rustc` now supports front-end-based coverage
instrumentation, via the experimental option
-[`-Z instrument-coverage`](./llvm-coverage-instrumentation.md), but using these
+[`-C instrument-coverage`](./llvm-coverage-instrumentation.md), but using these
coverage results for PGO has not been attempted at this time.
### Overall Workflow