[llvm] [Passes] Enhance `--print-pipeline-passes` (PR #202892)

[Aiden Grossman via llvm-commits]

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@@ -999,8 +999,28 @@ class NoOpLoopAnalysis : public AnalysisInfoMixin<NoOpLoopAnalysis> {
   }
 };
 
+enum class PrintPipelinePassesFormat {
+  Text,
+  Tree,
+};
+
+struct PrintPipelinePassesFormatParser
+    : public cl::parser<std::optional<PrintPipelinePassesFormat>> {
+  // using cl::parser<std::optional<PrintPipelinePassesFormat>>::parser;
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boomanaiden154 wrote:

Leftover?

https://github.com/llvm/llvm-project/pull/202892