[llvm] [CGData][GMF] Skip No Params (PR #116548)

[Ellis Hoag via llvm-commits]

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@@ -159,22 +169,33 @@ static bool isProfitable(
   unsigned InstCount = SFS[0]->InstCount;
   if (InstCount < GlobalMergingMinInstrs)
     return false;
+  double Benefit =
+      InstCount * (StableFunctionCount - 1) * GlobalMergingInstOverhead;
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ellishg wrote:

This looks unused until after this loop. Can we move until after we compute cost? Or could we early return if `Cost >= Benefit` for any iteration in the loop?

https://github.com/llvm/llvm-project/pull/116548