82f6f164a1
Key.PtrType is now an extern struct so that hashing it can be done by reinterpreting bytes directly. It also uses the same representation for type_pointer Tag encoding and the Key. Accessing pointer attributes now requires packed struct access, however, many operations are now a copy of a u32 rather than several independent fields. This function moves the top two most used Key variants - pointer types and pointer values - to use a single-shot hash function that branches for small keys instead of calling memcpy. As a result, perf against merge-base went from 1.17x ± 0.04 slower to 1.12x ± 0.04 slower. After the pointer value hashing was changed, total CPU instructions spent in memcpy went from 4.40% to 4.08%, and after additionally improving pointer type hashing, it further decreased to 3.72%.
A general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
Resources
- Introduction
- Download & Documentation
- Chapter 0 - Getting Started | ZigLearn.org
- Community
- Contributing
- Code of Conduct
- Frequently Asked Questions
- Community Projects
Installation
- download a pre-built binary
- install from a package manager
- build from source
- bootstrap zig for any target
License
The ultimate goal of the Zig project is to serve users. As a first-order effect, this means users of the compiler, helping programmers to write better software. Even more important, however, are the end-users.
Zig is intended to be used to help end-users accomplish their goals. Zig should be used to empower end-users, never to exploit them financially, or to limit their freedom to interact with hardware or software in any way.
However, such problems are best solved with social norms, not with software licenses. Any attempt to complicate the software license of Zig would risk compromising the value Zig provides.
Therefore, Zig is available under the MIT (Expat) License, and comes with a humble request: use it to make software better serve the needs of end-users.
This project redistributes code from other projects, some of which have other licenses besides MIT. Such licenses are generally similar to the MIT license for practical purposes. See the subdirectories and files inside lib/ for more details.