Fixes NEON support on Windows ARM64. Most of the changes deal with the somewhat odd way in which Microsoft deals with the uint8x16_t, etc types.
Additionally, MSVC on ARM/ARM64 does not support any inline assembly. Therefore __VOLK_ASM does not work, so a few workarounds have been implemented. One of these workarounds is to assume NEON is present if you're using MSVC, and building for ARM64 instead of running a check. NEON is a requirement for Windows on ARM as shown here: https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170.
Note that NEONv7 on Windows is not supported in this PR, as it would require re-wiring all the kernels into MASM (or some other format) to build on MSVC. Windows on 32-bit ARM is being deprecated anyway, so I'm thinking the neonv7 kernels can be ignored on Windows.
Fixes NEON support on Windows ARM64. Most of the changes deal with the somewhat odd way in which Microsoft deals with the uint8x16_t, etc types.
Additionally, MSVC on ARM/ARM64 does not support any inline assembly. Therefore
__VOLK_ASMdoes not work, so a few workarounds have been implemented. One of these workarounds is to assume NEON is present if you're using MSVC, and building for ARM64 instead of running a check. NEON is a requirement for Windows on ARM as shown here: https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170.Note that NEONv7 on Windows is not supported in this PR, as it would require re-wiring all the kernels into MASM (or some other format) to build on MSVC. Windows on 32-bit ARM is being deprecated anyway, so I'm thinking the neonv7 kernels can be ignored on Windows.