Build without semantic analysis

[Omar-xt]

hey i am thinking about what if we have an compiler flag to build without simantic analysis. directly from src to bin to
boost compilation speed.

Usecases:

1. when we fetch any package we are pretty much sure the package is simanticly correct. so we can escape simantic analysis and build directly.
2. when we are writing code maybe the lsp or zig watch type something will checking for semantics analysis. as a result we can build directly the src to bin.

maybe in other cases it is going to be helpful.
feel free to correct me if I am wrong.

[AndrewKraevskii]

Note what semantic analysis also includes comptime code evaluations so you cant just skip it.

@mlugg

So, arguably the most important stage of the Zig compiler pipeline is known as Sema. This stage is responsible for semantic analysis – that’s type checking, comptime code evaluation, and generating the IR which is sent to codegen. In the compiler, Sema is a type – found in src/Sema.zig – which contains all of the state necessary to perform this analysis. It has all kinds of fields for different things, but what we’re interested in here is how memory allocation happens.