don't use write barriers for frozen objects (dotnet#76135)

jkotas · Sep 26, 2022 · 315bdd4 · 315bdd4
1 parent b34abe1
commit 315bdd4
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/coreclr/jit/gcinfo.cpp b/src/coreclr/jit/gcinfo.cpp
@@ -252,6 +252,12 @@ GCInfo::WriteBarrierForm GCInfo::gcIsWriteBarrierCandidate(GenTreeStoreInd* stor
         return WBF_NoBarrier;
     }
 
+    if (store->Data()->IsIconHandle(GTF_ICON_OBJ_HDL))
+    {
+        // Ignore frozen objects
+        return WBF_NoBarrier;
+    }
+
     WriteBarrierForm wbf = gcWriteBarrierFormFromTargetAddress(store->Addr());
 
     if (wbf == WBF_BarrierUnknown)