[llvm] [orc-rt] Add Windows dynamic library support (PR #225076)

[Lang Hames via llvm-commits]

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@@ -0,0 +1,14 @@
+#ifndef ORC_RT_TEST_UNIT_INPUTS_TESTVISIBILITY_H
+#define ORC_RT_TEST_UNIT_INPUTS_TESTVISIBILITY_H
+
+#if defined(_WIN32)
+#if defined(ORC_RT_TEST_DLL_EXPORTS)
+#define TEST_EXPORT __declspec(dllexport)
+#else
+#define TEST_EXPORT __declspec(dllimport)
+#endif
+#else
+#define TEST_EXPORT __attribute__((visibility("default")))
+#endif
+
+#endif // ORC_RT_TEST_UNIT_INPUTS_TESTVISIBILITY_H
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lhames wrote:

This looks general purpose -- it could probably go in `orc-rt/test/unit` with the other generic test utils, but that can be a follow-up.

https://github.com/llvm/llvm-project/pull/225076