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Go adds experimental SIMD APIs for amd64, arm64 and wasm

go.dev 15 min read Editor score 7/10

Go 1.26 introduced experimental SIMD APIs for amd64, with Go 1.27 adding arm64 NEON and wasm support; the APIs avoid writing Go assembly for vector operations. This could make CPU acceleration more accessible in performance-sensitive Go code.

What

- Go 1.26 and 1.27 add experimental SIMD APIs, including a portable, platform- and vector-size-agnostic interface in Go 1.27.

How

- The simd package supports AVX, AVX2, AVX512, NEON, and wasm SIMD; its goal is near-assembly performance on supported hardware and emulation elsewhere.

Why it matters

- A portable SIMD interface could help Go programs use vector hardware for compute-intensive tasks such as AI, cryptography, and data processing.

Read on go.dev → Hacker News · 146 comments

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