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rust/compiler/rustc_codegen_llvm
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Matthias Krüger adf9b5fcd1
Rollup merge of #133418 - Zalathar:spans, r=jieyouxu 
coverage: Store coverage source regions as `Span` until codegen

Historically, coverage spans were converted into line/column coordinates during the MIR instrumentation pass.

This PR moves that conversion step into codegen, so that coverage spans spend most of their time stored as `Span` instead.

In addition to being conceptually nicer, this also reduces the size of coverage mappings in MIR, because `Span` is smaller than 4x u32.

---

There should be no changes to coverage output.
2024-11-27 22:23:25 +01:00
..
src Rollup merge of #133418 - Zalathar:spans, r=jieyouxu 2024-11-27 22:23:25 +01:00
Cargo.toml compiler: Factor rustc_target::abi out of cg_llvm 2024-10-08 18:24:56 -07:00
messages.ftl mark some target features as 'forbidden' so they cannot be (un)set 2024-11-04 22:56:47 +01:00
README.md mv compiler to compiler/ 2020-08-30 18:45:07 +03:00

README.md

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.