[llvm] Implement foldICmpRemConstant in InstCombineCompares (PR #77410)

[via llvm-commits]

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@@ -3708,7 +3748,12 @@ Instruction *InstCombinerImpl::foldICmpBinOpWithConstant(ICmpInst &Cmp,
   case Instruction::SRem:
     if (Instruction *I = foldICmpSRemConstant(Cmp, BO, C))
       return I;
+   [[fallthrough]]; 
+  case Instruction::URem:
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Baxi-codes wrote:

How do I do this? Do I undo the changes, add tests, and commit, then do the changes again?

https://github.com/llvm/llvm-project/pull/77410