[llvm] [CodeGen] Declare command line options in TableGen (PR #228729)

[Alexis Engelke via llvm-commits]

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@@ -498,44 +307,44 @@ void TargetPassConfig::setStartStopPasses() {
   Started = (StartAfter == nullptr) && (StartBefore == nullptr);
 }
 
+static cl::boolOrDefault toBoolOrDefault(std::optional<bool> B) {
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aengelke wrote:

Side remark (I missed this earlier?): std::optional<bool> is technically accurate, but easy to misuse and 2B large. I think the option should eventually store a bool-or-default enum.

https://github.com/llvm/llvm-project/pull/228729