492518fcd5
Change --keep-stage to apply more often Previously, the --keep-stage argument would only function for compilers that were depended on by future stages. For example, if trying to build a stage 1 compiler you could --keep-stage 0 to avoid re-building the stage 0 compiler. However, this is often not what users want in practice. The new implementation essentially skips builds all higher stages of the compiler, so an argument of 1 to keep-stage will skip rebuilds of the libraries, just linking them into the sysroot. This is unlikely to work well in cases where metadata or similar changes have been made, but is likely fine otherwise. This change is somewhat untested, but since it shouldn't have any effect except with --keep-stage, I don't see that as a large problem. r? @alexcrichton cc @nikomatsakis - I believe you wanted this functionality
This directory contains the source code of the rust project, including:
rustcand its testslibstd- Various submodules for tools, like rustdoc, rls, etc.
For more information on how various parts of the compiler work, see the rustc guide.
Their is also useful content in the following READMEs, which are gradually being moved over to the guide:
- https://github.com/rust-lang/rust/tree/master/src/librustc/ty/query
- https://github.com/rust-lang/rust/tree/master/src/librustc/dep_graph
- https://github.com/rust-lang/rust/blob/master/src/librustc/infer/region_constraints
- https://github.com/rust-lang/rust/tree/master/src/librustc/infer/higher_ranked
- https://github.com/rust-lang/rust/tree/master/src/librustc/infer/lexical_region_resolve