[llvm] [InstCombine] Fold scalbn libcalls to llvm.ldexp (PR #216573)

[Matt Arsenault via llvm-commits]

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@@ -1956,6 +1956,13 @@ static Value *replaceBinaryCall(CallInst *CI, IRBuilderBase &B,
   return copyFlags(*CI, NewCall);
 }
 
+static Value *replaceScalbnWithLdexp(CallInst *CI, IRBuilderBase &B) {
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arsenm wrote:

Don't need this single use function, it's not reusable 

https://github.com/llvm/llvm-project/pull/216573