[Lldb-commits] [clang] [lld] [lldb] [llvm] [Option] Shrink Info from 40 to 24 bytes (PR #224807)

[Alexis Engelke via lldb-commits]

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@@ -433,6 +427,29 @@ static void emitOptionParser(const RecordKeeper &Records, raw_ostream &OS) {
   }
   OS << "\n};\n\n";
 
+  // Rarely set fields, in OptTable::InfoExtra order. Options with equal values
+  // share a row; row 0 is all zero.
+  OS << "constexpr llvm::opt::OptTable::InfoExtra OptionInfoExtrasTable[] = "
+        "{\n  {0, 0, 0, 0, 0},\n";
+  std::map<std::array<unsigned, 5>, unsigned> ExtraRows;
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aengelke wrote:

DenseMap (maybe with reserve)?

https://github.com/llvm/llvm-project/pull/224807