[PATCH 1/N] x86_64 vectorization support: vectorized math functions addition to Glibc

[Andi Kleen]

> But this will not help in case of a binary compiled, say, for AVX512 target and launched on a system with glibc which contains vector versions up to AVX2, right?

You always need a glibc or newer than what you build with to run.
It's not different from any other new symbol in glibc.

Just shouldn't have newer subset glibcs that do not contain some
new symbols, but I don't think anyone is proposing that.

-andi