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rust/compiler/rustc_driver
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bors 35debd4c11 Auto merge of #77975 - bjorn3:cg_clif_subtree3, r=Mark-Simulacrum 
Add cg_clif as optional codegen backend

Rustc_codegen_cranelift is an alternative codegen backend for rustc based on Cranelift. It has the potential to improve compilation times in debug mode. In my experience the compile time improvements over debug mode LLVM for a clean build are about 20-30% in most cases.

This PR adds cg_clif as optional codegen backend. By default it is only enabled for `./x.py check`. It can be enabled for `./x.py build` too by adding `cranelift` to the `rust.codegen-backends` array in `config.toml`.

MCP: https://github.com/rust-lang/compiler-team/issues/270

r? `@Mark-Simulacrum`
2020-10-26 16:31:38 +00:00
..
src Auto merge of #77975 - bjorn3:cg_clif_subtree3, r=Mark-Simulacrum 2020-10-26 16:31:38 +00:00
Cargo.toml Upgrade to tracing 0.2.13 2020-10-07 19:27:10 -04:00
README.md

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.