[llvm] [CodeGenPrepare] Identify tail calls for reassembled aggregates (PR #219702)

[Jinpeng Wang via llvm-commits]

jjppp wrote:

> I think this addresses the issue as I described it, but not as I meant it.

Sorry for the delayed response. IIUC, what you want is tail recursion elimination, and should be done in the middle-end ;-)

I'll remove the link to the original issue and leave this PR as a bare codegen improvement.

https://github.com/llvm/llvm-project/pull/219702