[llvm] [InstCombine] Fold xored one-complemented operand comparisons (PR #69882)

[Yingwei Zheng via llvm-commits]

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@@ -6929,6 +6929,23 @@ static Instruction *foldReductionIdiom(ICmpInst &I,
   return nullptr;
 }
 
+// Gets the inverse of the predicate, but not the full predicate,
+// it doesn't change the equality, e.g SLE <-> SGE, SLT <-> SGT,
+// ULE <-> UGE, ULT <-> UGT
+static ICmpInst::Predicate ConvertPred(ICmpInst::Predicate Pred) {
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dtcxzyw wrote:

Please use `ICmpInst::getSwappedPredicate`.

https://github.com/llvm/llvm-project/pull/69882