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

[Jacek Caban via llvm-commits]

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@@ -807,6 +827,30 @@ computeMemberData(raw_ostream &StringTable, raw_ostream &SymNames,
     }
   }
 
+  if (SymMap) {
+    if (IsEC) {
+      SymMap->UseECMap = *IsEC;
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cjacek wrote:

Yes, it's covered. `llvm-lib/empty.test` from this PR checks its corner cases. That's also what existing `llvm-lib` and import libraries in general use.

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