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23ee523ea6
Backend and target selection is a mess: the target can override the backend (via `Target::default_codegen_backend`), *and* the backend can override the target (via `CodegenBackend::target_override`). The code that handles this is ugly. It calls `build_target_config` twice, once before getting the backend and once again afterward. It also must check that both overrides aren't triggering at the same time. This commit removes the latter override. It's used in rust-gpu but @eddyb said via Zulip that removing it would be ok. This simplifies the code greatly, and will allow some nice follow-up refactorings. |
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| .. | ||
| src | ||
| Cargo.toml | ||
| messages.ftl | ||
| README.md | ||
The driver crate is effectively the "main" function for the rust
compiler. It orchestrates the compilation process and "knits together"
the code from the other crates within rustc. This crate itself does
not contain any of the "main logic" of the compiler (though it does
have some code related to pretty printing or other minor compiler
options).
For more information about how the driver works, see the rustc dev guide.