[PATCH] D41962: Fix TestYMMRegisters for older machines without AVX2

[Jason Molenda via Phabricator via llvm-commits]

jasonmolenda added a comment.

I suppose a possible alternative would be to figure out the avx2 / avx512 features manually based on the cpuid instead of letting the compiler do it for us.  e.g. https://stackoverflow.com/questions/1666093/cpuid-implementations-in-c and then checking the bits as e.g. described in https://en.wikipedia.org/wiki/CPUID .  Bummer to do it so low level if we can delegate this to the compiler though.


Repository:
  rL LLVM

https://reviews.llvm.org/D41962