[clang] [llvm] [InstallAPI] Add support for parsing dSYMs (PR #86852)

[Cyndy Ishida via cfe-commits]

================
@@ -0,0 +1,40 @@
+; RUN: rm -rf %t
+; RUN: split-file %s %t
+
+// Build a simple dylib with debug info.
+; RUN: %clang --target=arm64-apple-macos13 -g -dynamiclib %t/foo.c \
----------------
cyndyishida wrote:

@JDevlieghere Is there a better/known practice for generating full dylibs with debug info for tests? Hopefully, PR CI will let me know, but I'm a little worried about different linker semantics. 
e.g. Xcode's ld requires all userspace dylibs link against libSystem. 

https://github.com/llvm/llvm-project/pull/86852