[llvm] [llvm-ar][Object][COFF] Add support for EC symbols to llvm-ar. (PR #85230)

[James Henderson via llvm-commits]

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@@ -807,6 +827,30 @@ computeMemberData(raw_ostream &StringTable, raw_ostream &SymNames,
     }
   }
 
+  if (SymMap) {
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jh7370 wrote:

Perhaps worth showing in a test that if symbols are not requested (i.e. `llvm-ar S ...`), no EC map is generated?

https://github.com/llvm/llvm-project/pull/85230