[clangd][NFC] Add traces for PreamblePatch::create

diff --git a/clang-tools-extra/clangd/Preamble.cpp b/clang-tools-extra/clangd/Preamble.cpp
index 667fa04..d02685f 100644 (file)
--- a/clang-tools-extra/clangd/Preamble.cpp
+++ b/clang-tools-extra/clangd/Preamble.cpp
@@ -385,6 +385,8 @@ void escapeBackslashAndQuotes(llvm::StringRef Text, llvm::raw_ostream &OS) {
 PreamblePatch PreamblePatch::create(llvm::StringRef FileName,
                                     const ParseInputs &Modified,
                                     const PreambleData &Baseline) {
+  trace::Span Tracer("CreatePreamblePatch");
+  SPAN_ATTACH(Tracer, "File", FileName);
   assert(llvm::sys::path::is_absolute(FileName) && "relative FileName!");
   // First scan preprocessor directives in Baseline and Modified. These will be
   // used to figure out newly added directives in Modified. Scanning can fail,