Intel
Note:
Not all CPUs from the listed families support AVX. Generally, CPUs with the commercial denomination “Core i3/i5/i7” support them, whereas “Pentium” and “Celeron” CPUs don’t.
Sandy Bridge - Q1 2011
https://en.wikipedia.org/wiki/Sandy_Bridge
Ivy Bridge - Q1 2012
https://en.wikipedia.org/wiki/Ivy_Bridge_(microarchitecture)
Haswell - Q2 2013
https://en.wikipedia.org/wiki/Haswell_(microarchitecture)
Broadwell - Q4 2014
https://en.wikipedia.org/wiki/Broadwell_(microarchitecture)
Skylake - Q3 2015
https://en.wikipedia.org/wiki/Skylake_(microarchitecture)
Kaby Lake - Q3 2016(ULV mobile)/Q1 2017(desktop/mobile)
https://en.wikipedia.org/wiki/Kaby_Lake
Skylake - Q2 2017
https://en.wikipedia.org/wiki/Skylake_(microarchitecture)
Coffee Lake - processor, Q4 2017
https://en.wikipedia.org/wiki/Coffee_Lake
Cannon Lake
https://en.wikipedia.org/wiki/Cannon_Lake_(microprocessor)
Ice Lake
https://en.wikipedia.org/wiki/Ice_Lake_(microprocessor)
AMD
Jaguar
https://en.wikipedia.org/wiki/Jaguar_(microarchitecture)
Puma
https://en.wikipedia.org/wiki/Puma_(microarchitecture)
Bulldozer - Q4 2011
https://en.wikipedia.org/wiki/Bulldozer_(microarchitecture)
Piledriver - Q4 2012
https://en.wikipedia.org/wiki/Piledriver_(microarchitecture)
Steamroller - Q1 2014
https://en.wikipedia.org/wiki/Steamroller_(microarchitecture)
Excavator- based processors and newer, 2015
https://en.wikipedia.org/wiki/Excavator_(microarchitecture)
Hope that helps some people to find out their processor and if the AVX issue affects them.
Cheers