simd/archsimd: architecture-specific SIMD intrinsics under a GOEXPERIMENT

Update (06/23/2026): Go 1.27 RC1 is released, which includes the experimental support of the portable size-agnostic simd package (https://github.com/golang/go/issues/78902), an update of the archisimd API for AMD64, and the inclusion of archsimd support for Wasm and ARM64, all under `GOEXPERIMENT=simd`. There are some breaking API changes for AMD64 archisimd API; please update the code accordingly. See https://github.com/golang/go/issues/73787#issuecomment-4780641599 . --- Update (02/11/2026): The AMD64 low-level SIMD package is now available in Go 1.26 under `GOEXPERIMENT=simd`. There were minor bug fixes since the RC2. We'll continue the development for Go 1.27 on the `dev.simd` branch. See https://github.com/golang/go/issues/73787#issuecomment-3885173105 . --- Update (01/15/2026): The AMD64 low-level SIMD package is now available in Go 1.26 RC2 under `GOEXPERIMENT=simd`. The RC2 includes a few bug fixes, some of which involve API changes from the RC1. See https://github.com/golang/go/issues/73787#issuecomment-3757458447 . --- Update (12/16/2025): The AMD64 low-level SIMD package is now available in Go 1.26 RC1 under `GOEXPERIMENT=simd`. Also, the package is renamed to `simd/archsimd`, per #76473,. See https://github.com/golang/go/issues/73787#issuecomment-3662797649 . --- Update (08/20/2025): A preliminary implementation of AMD64 low-level SIMD package is being developed on the dev.simd branch. You're welcome to check it out and try it with your use cases. Feedback

Posted by cherrymui on May 19, 2025, 8:43 PM

Tags

• support (Software)

Related issues

• Add 65536 size support for maps
• TypeScript 7.1 Iteration Plan
• nvim-treeconfig: upstream nvim-treesitter
• Add the "action" and "method" attributes to <button>
• [FEATURE] Support multiple Connector accounts (same connector, different accounts) in Claude and Claude Code on the web (claude.ai/code)
• > We were imposed GitHub for so many exercises!