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coverage: Re-enable `UnreachablePropagation` for coverage builds This is a sequence of 3 related changes: - Clean up the existing code that scans for unused functions - Detect functions that were instrumented for coverage, but have had all their coverage statements removed by later MIR transforms (e.g. `UnreachablePropagation`) - Re-enable `UnreachablePropagation` in coverage builds Because we now detect functions that have lost their coverage statements, and treat them as unused, we don't need to worry about `UnreachablePropagation` removing all of those statements. This is demonstrated by `tests/coverage/unreachable.rs`. Fixes #116171. |
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| COMPILER_TESTS.md | ||