[llvm] [BOLT] Add x86-64 large code model support (.ltext sections) (PR #190637)

[Farid Zakaria via llvm-commits]

fzakaria wrote:

Mostly for mimicry so things "look similar" -- I guess would be my simple argument.

Seeing `.ltext` or SHF_X86_64_LARGE would be an easy way to know the prior code-model used to build the binary; I guess if both of those were gone it's more difficult to determine the code-model (you'd have to disassemble the instructions).

https://github.com/llvm/llvm-project/pull/190637