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Nov 9, 2020 at 00:11
LLVM is introducing v1 to v4 of x86-64, so you can target newer chips: https://github.com/llvm/llvm-project/commit/012dd42e027e (gcc will do the same thing)
[X86] Support -march=x86-64-v[234] · llvm/llvm-project@012dd42
[X86] Support -march=x86-64-v[234] · llvm/llvm-project@012dd42
PR47686. These micro-architecture levels are defined in the x86-64 psABI: https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9 GCC 11 will support these levels. Note, -mtun...

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