[llvm] [IR] Disallow recursive types (PR #114799)

[Jay Foad via llvm-commits]

jayfoad wrote:

Compile time tracker: https://llvm-compile-time-tracker.com/compare.php?from=ee29eb19f01bb6a0622e3e5112760228d0944188&to=4643e68faef4ab6af8d1c9c680908485306fe70d&stat=instructions:u

https://github.com/llvm/llvm-project/pull/114799