[clang] [dyndbg][Clang] Implement nested-ELF dynamic debugging support (PR #194860)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp,c -- clang/test/DebugInfo/DynamicDebugging/EndToEnd/X86/globalopt.c clang/test/DebugInfo/DynamicDebugging/EndToEnd/X86/obj-emission-target/no-target.c clang/test/DebugInfo/DynamicDebugging/EndToEnd/X86/section.c clang/test/DebugInfo/DynamicDebugging/attr-outer-no-specialization.c clang/test/DebugInfo/DynamicDebugging/attr-outer-tail-pad-unsupported.c clang/test/DebugInfo/DynamicDebugging/attr-outer-tail-pad.c clang/test/DebugInfo/DynamicDebugging/compiler-used.cpp clang/test/DebugInfo/DynamicDebugging/embed.c clang/test/DebugInfo/DynamicDebugging/inner-attrs.c clang/test/DebugInfo/DynamicDebugging/profile-coverage.c clang/test/DebugInfo/DynamicDebugging/symbols-functions.cpp clang/test/DebugInfo/DynamicDebugging/symbols-globals.cpp clang/test/DebugInfo/DynamicDebugging/symbols-internal-comdat.cpp clang/test/Driver/dynamic-debugging-flags.c clang/include/clang/Basic/CodeGenOptions.h clang/lib/CodeGen/BackendUtil.cpp clang/lib/Driver/ToolChains/Clang.cpp clang/lib/Frontend/CompilerInvocation.cpp clang/test/Misc/warning-flags.c --diff_from_common_commit
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index 7920d1d25..72c3ba96c 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -1473,7 +1473,6 @@ void clang::emitBackendOutput(CompilerInstance &CI, CodeGenOptions &CGOpts,
     }
   }
 
-
   bool EnableDynamicDebugging = CGOpts.DynamicDebugging;
   // Disable dyndbg if the target isn't available as we're compiling to the
   // inner module to object regardless of other options. (This may change).

``````````

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https://github.com/llvm/llvm-project/pull/194860