Core dumped without AVX2 instructiom (VM instance)

[sweihub]

Yes, I know that sonic-cpp relies on the AVX2 instruction, for most VM instance, especially the cloud VMs, there's no AVX2 supported yet. But why the simdjson works normally? Can you fall back to sse/sse2 if no AVX2?

❯ ./build/benchmark/bench
[1]    2624172 illegal hardware instruction (core dumped)  ./build/benchmark/bench

CPU flags

❯ cat  /proc/cpuinfo | grep flags | uniq

flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 ht syscall nx lm rep_good nopl xtopology cpuid tsc_known_freq pni cx16 x2apic hypervisor lahf_lm pti

[xiegx94]

You can compile your program using any architecture， but it will coredump when platform doesn't support such architecture。

SSE/NEON will be supported in future.

[liuq19]

Fixed it. sonic-cpp has supported only sse. #56