[llvm] [InstCombine] Fold fcmp ogt (x - y), 0 into fcmp ogt x, y #85245 (PR #85506)

[via llvm-commits]

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@@ -7867,6 +7867,51 @@ static Instruction *foldFCmpFNegCommonOp(FCmpInst &I) {
   return new FCmpInst(Pred, Op0, Zero, "", &I);
 }
 
+static Instruction *foldFCmpFSubIntoFCmp(FCmpInst &I, Instruction *LHSI,
+                                         Constant *RHSC, InstCombinerImpl &CI) {
+  const CmpInst::Predicate Pred = I.getPredicate();
+  Value *X, *Y;
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SahilPatidar wrote:

done.


https://github.com/llvm/llvm-project/pull/85506