[llvm] [NFC][HLSL] Replace uses of `getResourceName`/`printEnum` (PR #152211)

[Ashley Coleman via llvm-commits]

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@@ -46,9 +28,9 @@ static raw_ostream &printFlags(raw_ostream &OS, const T Value,
       if (FlagSet)
         OS << " | ";
 
-      auto MaybeFlag = getEnumName(T(Bit), Flags);
-      if (MaybeFlag)
-        OS << *MaybeFlag;
+      StringRef MaybeFlag = enumToStringRef(T(Bit), Flags);
+      if (0 < MaybeFlag.size())
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V-FEXrt wrote:

Yeah fair enough. Checking for `empty()` is also fine

https://github.com/llvm/llvm-project/pull/152211