[llvm] [BOLT] Push code to higher addresses under options (PR #146180)

[Amir Ayupov via llvm-commits]

https://github.com/aaupov approved this pull request.

General question: with use-old-text and hot-functions-at-end, what's in the space that is not used? Is it the original code, or emitted padding/traps?

https://github.com/llvm/llvm-project/pull/146180