A Wasm to Go Translator

What it does

A Wasm to Go translator. Contribute to ncruces/wasm2go development by creating an account on GitHub.

wasm2go < input.wasm > output.go The input is a Wasm module, and the output is a single Go source file, with no dependencies beyond the standard library. The generated Go file forms a self-contained package, that exports a structure called Module and a New function to initialize it. The methods of the Module structure are the Wasm module's exports, whereas imports are interfaces that New consumes. We assume the input Wasm modules can be trusted. At a minimum, you should run Wasm modules through a verifier before attempting to convert an untrustedfrom github.com

In the maker’s words, at launch

I've spent the past couple of weeks building a Wasm-to-Go translator. It supports a subset of Wasm useful enough to translate SQLite into 600k LoC (~20 MiB) of Go code. It already passes all of my Go SQLite driver's tests across the 20 platforms I support. Performance compared to https:&#x2F;&#x2F;wazero.io&#x2F; is…

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  (bits) of a Libc, Optimized for Wasm2025 · github.com · ▲78

  I make a no-CGO Go SQLite driver, by compiling the amalgamation to Wasm, then loading the result with wazero (a CGO-free Wasm runtime). To compile SQLite, I use wasi-sdk, which uses wasi-libc, which is based on musl. It's been said that musl is slow(er than glibc), which is true, to a point. musl uses SWAR on a size_t to implement various functions in string.h. This is fine, except size_t is just 32-bit on Wasm. I found that implementing a few of those functions with Wasm SIMD128 can make them go around 4x faster. Other functions don't even use SWAR; redoing those can make them 16x faster.…

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  My Go SQLite driver did poorly on a benchmark, so I fixed it2023 · github.com · ▲234

  https:&#x2F;&#x2F;github.com&#x2F;ncruces&#x2F;go-sqlite3 was doing poorly on this benchmark that was posted yesterday to HackerNews [1]. With the help of some pprof, I was able to trace it to a serious performance regression introduced two weeks ago, and come up with the fix (happy to field questions, if you're interested in the nitty gritty). It's not the fastest driver around, but it's no longer the slowest: comfortably middle of the pack. It's based on a WASM build of SQLite, and thanks to https:&#x2F;&#x2F;wazero.io doesn't need CGO. [1]:…

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