When lowering the return type for Wasm if the calling convention is `C`, it now correctly lower it according to what clang does as specified in: https://github.com/WebAssembly/tool-conventions/blob/main/BasicCABI.md This makes use of the same logic as the Wasm backend, ensuring the generated code does not diverge in function signatures. When passing arguments accross the C-ABI for the Wasm target, we want slightly different behavior than x86_64. For instance: a struct with multiple fields must always be passed by reference, even if its ABI size fits in a single integer. However, we do pass larger integers such as 128bit by value, which LLVM will correctly lower to use double arguments instead.
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.