[llvm] Refactored llvm::UpgradeIntrinsicCall() function in lib/IR/AutoUpgrade.cpp with lookup table based on #30382 (PR #128611)

[Ali Raeisdanaei via llvm-commits]

aliraeisdanaei wrote:

> > What do you propose be done?
> 
> I don't believe anything needs to be done.

Ok fair enough. Why don't we close this PR and Issue #30382 

https://github.com/llvm/llvm-project/pull/128611