Disable AVX, AVX2, AVX-512, SSE support while building a go binary

aditi sinha

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Apr 6, 2023, 1:18:03 AM4/6/23

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Hi

I want to build a simple go binary that prints "hello world" but disablesthe use of all optional instruction set extensions e.g disable AVX, AVX2, AVX-512, SSE support .

Thanks

Aditi

Brian Candler

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Apr 6, 2023, 3:49:46 AM4/6/23

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See https://github.com/golang/go/wiki/MinimumRequirements#amd64

The default is GOAMD64=v1 so the fancy extensions are disabled by default (or guarded).

Uli Kunitz

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Apr 7, 2023, 2:22:14 AM4/7/23

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Note that SSE2 is not optional and is used for floating point operations on 386 and AMD64. Before 1.16 there has been a GO386 option that supported 387 instructions but it has been removed. GOAMD64 has no influence on it.

Uli Kunitz

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Apr 7, 2023, 2:35:46 AM4/7/23

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After reading the documentation I have to correct. GO386 supports the softfloat option to support older processors which don't support SSE2.

Information can be found here: https://github.com/golang/go/wiki/MinimumRequirements#386

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