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e9c965df7b
rust/compiler/rustc_codegen_llvm
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bors e9c965df7b Auto merge of #128812 - nnethercote:shrink-TyKind-FnPtr, r=compiler-errors 
Shrink `TyKind::FnPtr`.

By splitting the `FnSig` within `TyKind::FnPtr` into `FnSigTys` and `FnHeader`, which can be packed more efficiently. This reduces the size of the hot `TyKind` type from 32 bytes to 24 bytes on 64-bit platforms. This reduces peak memory usage by a few percent on some benchmarks. It also reduces cache misses and page faults similarly, though this doesn't translate to clear cycles or wall-time improvements on CI.

r? `@compiler-errors`
2024-08-14 00:56:53 +00:00
..
src Auto merge of #128812 - nnethercote:shrink-TyKind-FnPtr, r=compiler-errors 2024-08-14 00:56:53 +00:00
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.