[llvm] [InstCombine] Transform (fcmp + fadd + sel) into (fcmp + sel + fadd) (PR #106492)

[Matt Arsenault via llvm-commits]

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@@ -3668,6 +3668,51 @@ static bool hasAffectedValue(Value *V, SmallPtrSetImpl<Value *> &Affected,
   return false;
 }
 
+static Value *foldSelectAddConstant(SelectInst &SI,
+                                    InstCombiner::BuilderTy &Builder) {
+  Value *Cmp;
+  Instruction *FAdd;
+  ConstantFP *C;
+
+  // select((fcmp OGT/OLT, X, 0), (fadd X, C), C) => fadd((select (fcmp OGT/OLT,
+  // X, 0), X, 0), C)
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arsenm wrote:

Can you reflow the comment so the result dag isn't split across lines?

https://github.com/llvm/llvm-project/pull/106492