Jun Aruga writes: > I recommend using the simde (SIMD Everywhere) library for the packaging and contribution > to the upstream. https://github.com/nemequ/simde
This does not help unless the project LPCNet maintainers are willing to built the fat binaries and support dynamic selection. Otherwise every user is rebuilding from source. > You do not need to care about the availability by arch or compiler when using this library. This is exactly what the Power Vector Library PVECLIB <https://github.com/open-power-sdk/pveclib/wiki> is doing for ppc64le. PVECLIB provides POWER7/8/9 VMX/VSX operations equivalent to <altivec.h> while smoothing over compiler version and platform ISA differences. PVECLIB also provides useful operations beyond the "Power Vector Intrinsic Programming Reference" defined set (like Multiply 128-bit Quadword). Net you can write using power9 operation extensions and still compile for -mcpu=power7/8. PVECLIB provides the appropriate implementation. Also for GCC (and I think Clang) provide ppc64le equivalent headers to Intel MMX and SSE intrinsic headers (at least for SSE3 and some SSE4). This could be more of a performance compromise (vs PVECLIB) but would be a place to start if you have an existing SSE implementation and want to vectorize ppc64le. But again someone needs to build and distribute the fat binaries for each project.
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