[llvm] [GlobalOpt] Prevent widenDestArray from shrinking an alloca. (PR #144641)

[Nikita Popov via llvm-commits]

nikic wrote:

TBH, the more I look at this code, the more unhappy I become. I submitted a full revert of the GlobalOpt code at https://github.com/llvm/llvm-project/pull/144652.

https://github.com/llvm/llvm-project/pull/144641