[llvm] [NVPTX] Cleanup/Refactoring in NVPTX AsmPrinter and RegisterInfo (NFC) (PR #126800)

[Artem Belevich via llvm-commits]

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@@ -635,25 +635,23 @@ static bool usedInGlobalVarDef(const Constant *C) {
   return false;
 }
 
-static bool usedInOneFunc(const User *U, Function const *&oneFunc) {
-  if (const GlobalVariable *othergv = dyn_cast<GlobalVariable>(U)) {
-    if (othergv->getName() == "llvm.used")
+static bool usedInOneFunc(const User *U, Function const *&OneFunc) {
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Artem-B wrote:

`return bool + value via argument` may be converted to returning std::optional.

Definitely easier to grok than `const *& something`.

https://github.com/llvm/llvm-project/pull/126800