[llvm] [BOLT][WIP] Always treat function entry as code (PR #160161)

[Alexey Moksyakov via llvm-commits]

yavtuk wrote:

> @yavtuk do you have an example where we have data at the start of the function? I'd like to consider us treating such cases differently, i.e. shift the function entry point to an actual code location.

https://github.com/yavtuk/openssl/commit/28b80f26eed28cd0163e159663d870eafbb6804e

https://github.com/llvm/llvm-project/pull/160161