d53f0b1d8e
Enable -Zshare-generics for inline(never) functions This avoids inlining cross-crate generic items when possible that are already marked inline(never), implying that the author is not intending for the function to be inlined by callers. As such, having a local copy may make it easier for LLVM to optimize but mostly just adds to binary bloat and codegen time. In practice our benchmarks indicate this is indeed a win for larger compilations, where the extra cost in dynamic linking to these symbols is diminished compared to the advantages in fewer copies that need optimizing in each binary. It might also make sense it expand this with other heuristics (e.g., `#[cold]`) in the future, but this seems like a good starting point. FWIW, I expect that doing cleanup in where we make the decision what should/shouldn't be shared is also a good idea. Way too much code needed to be tweaked to check this. But I'm hoping to leave that for a follow-up PR rather than blocking this on it. |
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This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.
Why Rust?
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Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrate with other languages.
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Reliability: Our rich type system and ownership model ensure memory and thread safety, reducing bugs at compile-time.
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Productivity: Comprehensive documentation, a compiler committed to providing great diagnostics, and advanced tooling including package manager and build tool (Cargo), auto-formatter (rustfmt), linter (Clippy) and editor support (rust-analyzer).
Quick Start
Read "Installation" from The Book.
Installing from Source
If you really want to install from source (though this is not recommended), see INSTALL.md.
Getting Help
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Contributing
See CONTRIBUTING.md.
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Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.
See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.
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