[lld] [lld][ELF] Add --debug-names to create merged .debug_names. (PR #86508)

[Fangrui Song via llvm-commits]

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@@ -1,10 +1,10 @@
-# This file was generated by first compiling main.cpp:
-# clang++ -g -O0 -S -gpubnames -fdebug-compilation-dir='debug-names-test' \
-#      main.cpp
+# This file was generated by first compiling a.cpp:
+# clang++ -g -O0 -S -gpubnames -fdebug-compilation-dir='/proc/self/cwd' a.cpp
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MaskRay wrote:

Thanks for making all tests use `/proc/self/cwd`. Yes, it looks better.

https://github.com/llvm/llvm-project/pull/86508