[llvm] [InstCombine] Fold `ceil(X / (2 ^ C)) == 0` -> `X == 0` (PR #143683)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

Can you file a separate patch for https://github.com/llvm/llvm-project/pull/143683/commits/4811b7ddfdd0818aa3226471f228fa049be13dff? I think we can land this change first :)


https://github.com/llvm/llvm-project/pull/143683