75da570d78
Use the object crate for metadata reading This allows sharing the metadata reader between cg_llvm, cg_clif and other codegen backends. This is not currently useful for rlib reading with cg_spirv ([rust-gpu](https://github.com/EmbarkStudios/rust-gpu/)) as it uses tar rather than ar as .rlib format, but it is useful for dylib reading required for loading proc macros. (cc `@eddyb)` The object crate is already trusted as dependency of libstd through backtrace. As far as I know it supports reading all object file formats used by targets for which we support rust dylibs with crate metadata, but I am not certain. If this happens to not be the case, I could keep using LLVM for reading dylib metadata. Marked as WIP for a perf run and as it is based on #83637. |
||
|---|---|---|
| .. | ||
| src | ||
| Cargo.toml | ||
| README.md | ||
Please read the rustc-dev-guide chapter on Backend Agnostic Codegen.