Add ARM Neon and scalar implementations of SIMD functions#359

Merged

lh3 merged 4 commits intolh3:masterfrom jmarshall:neon

Aug 31, 2022

+194-6

Commits on Jun 17, 2022

Make _mm_load_si128() explicit
jmarshall
committed

Commits on Jun 20, 2022

On ARM, rewrite SSE2 SIMD calls using Neon intrinsics
jmarshall
committed

Commits on Jun 26, 2022

On other platforms, emulate SSE2 SIMD calls using scalar code
jmarshall
committed

Commits on Jun 27, 2022

Use native SSE2 intrinsics on i386 as well as x86-64
jmarshall
committed