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Add the unstable option to reduce the binary size of dynamic library… # Motivation The average length of symbol names in the rust standard library is about 100 bytes, while the average length of symbol names in the C++ standard library is about 65 bytes. In some embedded environments where dynamic library are widely used, rust dynamic library symbol name space hash become one of the key bottlenecks of application, Especially when the existing C/C++ module is reconstructed into the rust module. The unstable option `-Z symbol_mangling_version=hashed` is added to solve the bottleneck caused by too long dynamic library symbol names. ## Test data The following is a set of test data on the ubuntu 18.04 LTS environment. With this plug-in, the space saving rate of dynamic libraries can reach about 20%. The test object is the standard library of rust (built based on Xargo), tokio crate, and hyper crate. The contents of the Cargo.toml file in the construction project of the three dynamic libraries are as follows: ```txt # Cargo.toml [profile.release] panic = "abort" opt-leve="z" codegen-units=1 strip=true debug=true ``` The built dynamic library also removes the `.rustc` segments that are not needed at run time and then compares the size. The detailed data is as follows: 1. libstd.so > | symbol_mangling_version | size | saving rate | > | --- | --- | --- | > | legacy | 804896 || > | hashed | 608288 | 0.244 | > | v0 | 858144 || > | hashed | 608288 | 0.291 | 2. libhyper.so > | symbol_mangling_version(libhyper.so) | symbol_mangling_version(libstd.so) | size | saving rate | > | --- | --- | --- | --- | > | legacy | legacy | 866312 || > | hashed | legacy | 645128 |0.255| > | legacy | hashed | 854024 || > | hashed | hashed | 632840 |0.259| |
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rust-analyzer is a modular compiler frontend for the Rust language. It is a part of a larger rls-2.0 effort to create excellent IDE support for Rust.
Quick Start
https://rust-analyzer.github.io/manual.html#installation
Documentation
If you want to contribute to rust-analyzer or are just curious about how things work under the hood, check the ./docs/dev folder.
If you want to use rust-analyzer's language server with your editor of choice, check the manual folder. It also contains some tips & tricks to help you be more productive when using rust-analyzer.
Security and Privacy
See the corresponding sections of the manual.
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For usage and troubleshooting requests, please use "IDEs and Editors" category of the Rust forum:
https://users.rust-lang.org/c/ide/14
For questions about development and implementation, join rust-analyzer working group on Zulip:
https://rust-lang.zulipchat.com/#narrow/stream/185405-t-compiler.2Frust-analyzer
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- Website: https://rust-analyzer.github.io/
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- API docs: https://rust-lang.github.io/rust-analyzer/ide/
- Changelog: https://rust-analyzer.github.io/thisweek
License
rust-analyzer is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0).
See LICENSE-APACHE and LICENSE-MIT for details.