[clang] [llvm] [llvm][support] Implement tracing virtual file system (PR #88326)

[Michael Spencer via cfe-commits]

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@@ -2933,8 +2933,21 @@ recursive_directory_iterator::increment(std::error_code &EC) {
   return *this;
 }
 
+void TracingFileSystem::printImpl(raw_ostream &OS, PrintType Type,
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Bigcheese wrote:

Should this print the current stat values?

https://github.com/llvm/llvm-project/pull/88326