bc3bc2ba6b
bump itertools to 0.12 still depend on 0.11 (temporary dupes version): * <del>clippy</del>, https://github.com/rust-lang/rust-clippy/pull/12346 * rustfmt, sigh, https://github.com/rust-lang/rustfmt/pull/6093 https://github.com/rust-itertools/itertools/blob/v0.12.1/CHANGELOG.md removed unused `derive_more` dep from `rustc_middle`
The codegen crate contains the code to convert from MIR into LLVM IR,
and then from LLVM IR into machine code. In general it contains code
that runs towards the end of the compilation process.
For more information about how codegen works, see the rustc dev guide.