[llvm] [InstSimplify] Fold `getelementptr inbounds null, idx -> null` (PR #130742)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> If this is causing a lot of issues can we possibly revert it while the fixes make their way through review, and then re-merge it with the fixes?

Sorry, we cannot add a workaround for the SDL2 case. The base pointer is not a constant null, so that clang doesn't know if it is safe to set `inbounds` flag. The best solution is to replace the pointer addition with an integer addition.


https://github.com/llvm/llvm-project/pull/130742