[libcxx] [clang-tools-extra] [llvm] [libc] [clang] [compiler-rt] [flang] [Clang] Generate the GEP instead of adding AST nodes (PR #73730)

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h-vetinari wrote:

> #75857 has been merged in. This PR is no longer valid.

Couldn't you just rebase it like:
- base: `main`
- pick revert of #75857 
- all the commits of this PR

It's a bit of a matter of taste obviously how to deal with such situations. I tend to prefer not to split the context across several PRs...

https://github.com/llvm/llvm-project/pull/73730