[llvm] Fix scalar overload name constructed by ReplaceWithVeclib.cpp (PR #111095)

[Maciej Gabka via llvm-commits]

================
@@ -100,20 +100,39 @@ static void replaceWithTLIFunction(IntrinsicInst *II, VFInfo &Info,
 static bool replaceWithCallToVeclib(const TargetLibraryInfo &TLI,
                                     IntrinsicInst *II) {
   assert(II != nullptr && "Intrinsic cannot be null");
-  // At the moment VFABI assumes the return type is always widened unless it is
----------------
mgabka wrote:

this comment was useful as it explains the why EC is computed in such a way please do not delete it

https://github.com/llvm/llvm-project/pull/111095