Support 128-bit SIMD on AArch64 via LLVM backend
Currently, SIMD primitives are only available on x86(_64). It would be nice to extend SIMD support to AArch64.
The initial step would be supporting 128-bit width SIMD with ASIMD (NEON) via LLVM backend. Support via NCG or consideration of SVE can follow.
I opened a MR at !10456 (closed).