[llvm] [llvm-exegesis] Add support for loading X86 segment registers (PR #76368)

[Aiden Grossman via llvm-commits]

boomanaiden154 wrote:

> The reland breaks building on windows: http://45.33.8.238/

3e6e09609d8cef3c7cc99ced1a043869c8e984b8 will hopefully fix that. I'll keep an eye on your CI and the buildbots. If that doesn't fix it, I'll pull the patch and retest on a couple other platforms before relanding it again to make sure I have the preprocessor setup correct.

https://github.com/llvm/llvm-project/pull/76368