[llvm] [SelectionDAG] Handling Oversized Alloca Types under 32 bit Mode to Avoid Code Generator Crash (PR #71472)

[Qiongsi Wu via llvm-commits]

qiongsiwu wrote:

@arsenm Hi Matt! The PR description is also updated to avoid mentioning any specific optimization passes. Earlier change requests are either [addressed](https://github.com/llvm/llvm-project/pull/71472#discussion_r1384389359), or I have some follow up questions and I would like to seek your clarification ([here](https://github.com/llvm/llvm-project/pull/71472#discussion_r1385059881) and [here](https://github.com/llvm/llvm-project/pull/71472#issuecomment-1799085766)). 

Could you get back to me on the two questions? Thanks so much! 

https://github.com/llvm/llvm-project/pull/71472