[llvm-branch-commits] [llvm] release/18.x: [X86][Driver] Do not add `-evex512` for `-march=native` when the target doesn't support AVX512 (#91694) (PR #91705)

[Phoebe Wang via llvm-branch-commits]

phoebewang wrote:

This patch fixes build failures when compiling AVX512 code using `-march=native` on machines without AVX512. The problem was introduced by https://github.com/llvm/llvm-project/commit/a7b8b890600a33e0c88d639f311f1d73ccb1c8d2 which is included in LLVM 18.1.5 release.

https://github.com/llvm/llvm-project/pull/91705