[llvm] OrcV2: also set COFF flag overrides when custom linking layer is used (PR #129533)

[Lang Hames via llvm-commits]

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@@ -949,8 +949,18 @@ Expected<std::unique_ptr<ObjectLayer>>
 LLJIT::createObjectLinkingLayer(LLJITBuilderState &S, ExecutionSession &ES) {
 
   // If the config state provided an ObjectLinkingLayer factory then use it.
-  if (S.CreateObjectLinkingLayer)
-    return S.CreateObjectLinkingLayer(ES);
+  if (S.CreateObjectLinkingLayer) {
+    auto Layer = S.CreateObjectLinkingLayer(ES);
+    if (Layer && S.JTMB->getTargetTriple().isOSBinFormatCOFF()) {
+      auto *RTDyldLayer =
+          dyn_cast_or_null<RTDyldObjectLinkingLayer>(Layer.get().get());
+      if (RTDyldLayer) {
+        RTDyldLayer->setOverrideObjectFlagsWithResponsibilityFlags(true);
+        RTDyldLayer->setAutoClaimResponsibilityForObjectSymbols(true);
+      }
+    }
+    return Layer;
+  }
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lhames wrote:

Thanks for catching the `isOSBinFormatCOFF` check that I'd left out! :)

https://github.com/llvm/llvm-project/pull/129533