When set, this flag skips the code that normally extracts coverage spans from
MIR statements and terminators. That sometimes makes it easier to debug branch
coverage and MC/DC coverage, because the coverage output is less noisy.

For internal debugging only. If other code changes would make it hard to keep
supporting this flag, remove it.

This test reflects the current implementation behaviour, which is not
necessarily the desired behaviour.

…tions

These tests reflect the current implementation behaviour, which is not
necessarily the desired behaviour.

…ed, r=jieyouxu

Migrate `run-make/used` to `rmake.rs`

Part of rust-lang#121876.

r? `@jieyouxu`

… r=jieyouxu

Migrate `error-found-staticlib-instead-crate`, `output-filename-conflicts-with-directory`, `output-filename-overwrites-input`, `native-link-modifier-verbatim-rustc` and `native-link-verbatim-linker` `run-make` tests to `rmake.rs` format

Part of rust-lang#121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).

interpret: better error when we ran out of memory

coverage: Add debugging flag `-Zcoverage-options=no-mir-spans`

When set, this flag skips the code that normally extracts coverage spans from MIR statements and terminators. That sometimes makes it easier to debug branch coverage and MC/DC coverage instrumentation, because the coverage output is less noisy.

For internal debugging only. If future code changes would make it hard to keep supporting this flag, it should be removed at that time.

`@rustbot` label +A-code-coverage

…rochenkov

More thorough status-quo tests for `#[coverage(..)]`

In light of the stabilization push at rust-lang#84605 (comment), I have written some tests to more thoroughly capture the current behaviour of the `#[coverage(..)]` attribute.

These tests aim to capture the *current* behaviour, which is not necessarily the desired behaviour. For example, some of the error message are not great, some things that perhaps ought to cause an error do not, and recursive coverage attributes have not been implemented yet.

`@rustbot` label +A-code-coverage