b0edd8752a
Prior to this, Liveness encoded `asm`, `call`, and `aggregate_init` with a single 32-bit integer, allowing up to 35 operands (3 are provided by the regular tomb_bits). However, the Zig language allows function calls with more than 35 arguments, inline assembly with more than 35 inputs, and anonymous tuples with more than 35 elements. The new encoding stores an index to the extra array instead of the bits directly, and then as many extra elements as needed to encode all the operands. The MSB is used as a flag to tell which element is the last one, allowing for 31 bits per element. Prior to this, print_air did not bother correctly printing tombstones for these instructions; now it does. In addition to updating the BigTomb iteration logic in the machine code backends, this commit extracts the common logic into the Liveness namespace.
A general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
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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.