f4d5fcde72
Whenever a `ref` instruction is needed, it is created and saved in `AstGen.ref_table` instead of being immediately appended to the current block body. Then, when the referenced instruction is being added to the parent block (e.g. from setBlockBody), if it has a ref_table entry, then the ref instruction is added directly after the instruction being referenced. This makes sure two properties are upheld: 1. All pointers to the same locals return the same address. This is required to be compliant with the language specification. 2. `ref` instructions will dominate their uses. This is a required property of ZIR. A complication arises when a ref instruction refs another ref instruction. The logic in appendBodyWithFixups must take this into account, recursively handling ref refs.
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.