Re:Optimizations on Linear Search (2016)
by gameswithgo on Saturday October 03, 2020 @12:21PM
(#24673000)
standard libraries are only just now starting to use SIMD at all. .NET has been working hard on SIMDifying their core libraries lately. Do any C++ implementations of the std do so? Or do they just lean on llvm/gcc to autovectorize when possible?
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Re:Optimizations on Linear Search (2016)
by formerly_proven on Saturday October 03, 2020 @12:26PM
(#24673024)
There's really no point providing a hand-rolled SIMD implementation for stuff like std::max_element. It's a very trivial loop that any compiler can and will vectorize.
Auto-vectorization in general "just works" for basic stuff. It's only the complex stuff where you can really benefit from hand-rolled SIMD implementations; you'll know it when you see it.