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

[James Henderson via llvm-commits]

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@@ -0,0 +1,139 @@
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+# RUN: yaml2obj %s -o %t.o
+# RUN: echo '.*' > %t.symbols.regex
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jh7370 wrote:

I think it would be useful to have a test case that uses the file-based option but which only matches some of the symbols, showing that the remainder are not modified.

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