[llvm] [SandboxIR] Add extern templates for GlobalWithNodeAPI (PR #111940)

[via llvm-commits]

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@@ -797,6 +798,24 @@ class GlobalWithNodeAPI : public ParentT {
   }
 };
 
+extern template LLVM_TEMPLATE_ABI GlobalIFunc &
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vporpo wrote:

Please add a comment that this is for `LLVM_BUILD_LLVM_DYLIB`.

https://github.com/llvm/llvm-project/pull/111940