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rust/compiler/rustc_codegen_llvm
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bors be33e4f3d6 Auto merge of #132167 - Zalathar:llvm-wrappers, r=jieyouxu 
Replace some LLVMRust wrappers with calls to the LLVM C API

This PR removes the LLVMRust wrapper functions for getting/setting linkage and visibility, and replaces them with direct calls to the corresponding functions in LLVM's C API.

To make this convenient and sound, two pieces of supporting code have also been added:
- A simple proc-macro that derives `TryFrom<u32>` for fieldless enums
- A wrapper type for C enum values returned by LLVM functions, to ensure soundness if LLVM returns an enum value we don't know about

In a few places, the use of safe wrapper functions means that an `unsafe` block is no longer needed, so the affected code has changed its indentation level.
2024-10-27 03:24:54 +00:00
..
src Auto merge of #132167 - Zalathar:llvm-wrappers, r=jieyouxu 2024-10-27 03:24:54 +00:00
Cargo.toml compiler: Factor rustc_target::abi out of cg_llvm 2024-10-08 18:24:56 -07:00
messages.ftl codegen_ssa: consolidate tied feature checking 2024-09-24 15:48:49 +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.