[llvm] [llvm-objcopy] Add llvm-objcopy option --set-visibility-sym (PR #80872)

[James Henderson via llvm-commits]

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@@ -0,0 +1,155 @@
+
+# RUN: yaml2obj %s -o %t.o
+# RUN: echo '.*' > %t.symbols.regex
+
+# Check if the visibility of all symbols is properly set to DEFAULT
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jh7370 wrote:

```suggestion
# Check that the visibility of all symbols is properly set to DEFAULT
```

https://github.com/llvm/llvm-project/pull/80872