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sse - Do all CPUs which support AVX2 also support SSE4.2 and AVX?

I am planning to implement runtime detection of SIMD extensions. Is it such that if I find out that the processor ... SSE4.2 and AVX support? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sse - efficient way to convert scatter indices into gather indices?

I'm trying to write a stream compaction (take an array and get rid of empty elements) with SIMD intrinsics. Each ... ? I can give that up. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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