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A comment on Vectorization: Introduction. Parent comment

Re:Vectorization: Introduction by crest on Friday June 02, 2023 @02:05PM (#36168663)
The cheeky answer would be to throw away the trash every decade, but the real answer is that there is tooling in place to pick the best possible implementation of a function at link time on modern *nix systems to target several levels of SIMD support e.g. SSE2 only, SSE4.2, AVX2, common collection of AVX512 extensions.
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Re:Vectorization: Introduction by iamcreasy on Sunday June 04, 2023 @12:23AM (#36183079)
What tool you are referring to? Can you please forward me to those resources?
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Re:Vectorization: Introduction by janwas on Monday June 05, 2023 @05:51AM (#36194277)
I think crest may be referring to function multiversioning, but that only helps choose/call the implementation, not generate it.

github.com/google/highway supports compiling your single source code once into several versions, and then dispatching to the best one.

Disclosure: I am the main author.

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