[llvm] [AMDGPU] prevent shrinking udiv/urem if either operand is in (SignedMax,UnsignedMax] (PR #116733)

[Shilei Tian via llvm-commits]

shiltian wrote:

> Definitely seems like it. The LLVM libc tests tend to trigger a lot of different edge cases because it compiles a lot of non-standard GPU code.

👍 which is really nice to have :-)

https://github.com/llvm/llvm-project/pull/116733