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rust/compiler/rustc_codegen_llvm
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Matthias Krüger 904f5795a0
Rollup merge of #128221 - calebzulawski:implied-target-features, r=Amanieu 
Add implied target features to target_feature attribute

See [zulip](https://rust-lang.zulipchat.com/#narrow/stream/208962-t-libs.2Fstdarch/topic/Why.20would.20target-feature.20include.20implied.20features.3F) for some context.  Adds implied target features, e.g. `#[target_feature(enable = "avx2")]` acts like `#[target_feature(enable = "avx2,avx,sse4.2,sse4.1...")]`.  Fixes #128125, fixes #128426

The implied feature sets are taken from [the rust reference](https://doc.rust-lang.org/reference/attributes/codegen.html?highlight=target-fea#x86-or-x86_64), there are certainly more features and targets to add.

Please feel free to reassign this to whoever should review it.

r? ``@Amanieu``
2024-08-07 20:28:16 +02:00
..
src Rollup merge of #128221 - calebzulawski:implied-target-features, r=Amanieu 2024-08-07 20:28:16 +02:00
Cargo.toml dedup object 2024-07-28 17:21:07 +03:00
messages.ftl Move mingw dlltool invocation to cg_ssa 2024-07-30 10:33:33 +00:00
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.