[llvm] Sketch of build and code changes for llvm shared library build using explicit visibility annotations (PR #96630)

[Thomas Fransham via llvm-commits]

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@@ -1080,6 +1080,7 @@ END_TWO_BYTE_PACK()
   void printrWithDepth(raw_ostream &O, const SelectionDAG *G = nullptr,
                        unsigned depth = 100) const;
 
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
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fsfod wrote:

I also found SystemZAddressingMode was calling one these functions outside of a debug build, but the only use was indirectly in a LLVM_DEBUG macro.

https://github.com/llvm/llvm-project/pull/96630