[llvm] [ORC] Add auto-loading of shared libraries for unresolved symbols. (PR #148410)

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp,h -- llvm/include/llvm/ExecutionEngine/Orc/Shared/SymbolFilter.h llvm/include/llvm/ExecutionEngine/Orc/TargetProcess/DynamicLoader.h llvm/include/llvm/ExecutionEngine/Orc/TargetProcess/LibraryScanner.h llvm/lib/ExecutionEngine/Orc/TargetProcess/DynamicLoader.cpp llvm/lib/ExecutionEngine/Orc/TargetProcess/LibraryScanner.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/ExecutionEngine/Orc/TargetProcess/LibraryScanner.cpp b/llvm/lib/ExecutionEngine/Orc/TargetProcess/LibraryScanner.cpp
index 75dcabb9a..cd5ce39ea 100644
--- a/llvm/lib/ExecutionEngine/Orc/TargetProcess/LibraryScanner.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/TargetProcess/LibraryScanner.cpp
@@ -154,7 +154,7 @@ std::optional<std::string> DylibPathResolver::substAll(StringRef original,
   if (auto path = substOne(original, "$origin", loaderDir))
     return path;
 
-    // Optional: handle $lib or $platform later if needed
+  // Optional: handle $lib or $platform later if needed
 #endif
 
   return std::nullopt;
@@ -307,7 +307,7 @@ mode_t PathResolver::lstatCached(const std::string &path) {
     return it->second;
 
   // Not cached: perform lstat and store
-  struct stat buf {};
+  struct stat buf{};
   mode_t st_mode = (lstat(path.c_str(), &buf) == -1) ? 0 : buf.st_mode;
 
   cache.insert({path, st_mode});

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https://github.com/llvm/llvm-project/pull/148410