[lld] [ELF][LTO] Add baseline test for invalid relocations against runtime calls (PR #127286)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,125 @@
+; REQUIRES: arm
+;; https://github.com/llvm/llvm-project/issues/127284
+;; Test for LTO optimizing out references to symbols that are pulled in by
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MaskRay wrote:

"optimizing out references " might not be the best way to phrase this issue. As this is no "optimizing out" step involved. My phrasing in https://github.com/llvm/llvm-project/issues/127284#issuecomment-2661091430 might be useful?

https://github.com/llvm/llvm-project/pull/127286