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Go adds experimental SIMD APIs for arm64 and wasm

go.dev by Junyang Shao and David Chase 12 min read Editor score 7/10

Go 1.27 extends its experimental SIMD API to arm64 and wasm, with a lower-level architecture-specific intrinsics layer. The API design and compiler optimizations matter to teams pursuing portable performance in Go.

What

Go 1.27 adds experimental architecture-specific SIMD APIs for arm64 and wasm, alongside existing amd64 support.

How

The `simd/archsimd` package exposes vector types and operations; users enable it with `GOEXPERIMENT=simd`.

Why it matters

Go developers can use parallel vector operations without writing assembly, and shared method names keep equivalent operations consistent across architectures.

Read on go.dev →

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