aganea added a comment. LGTM!
Some quick stats on our end (running Windows 10 on a Intel W-2135, 6-core, 3.7 GHz, NVMe SSD): on a large .SLN compiling approx. 16,000 .CPP files through 600 unity .CPPs and 23,000 .H files, out of **86 secs** spent in `ClangScanDeps`, about **32 secs** are spent in `DirectoryLookup::LookUpFile`. ================ Comment at: clang/include/clang/Tooling/DependencyScanning/DependencyScanningWorker.h:29 +/// sources either using a fast mode where the source files are minimized, or +/// using the regular processing run. +class DependencyScanningWorker { ---------------- How do you actually select between the fast mode or the regular preprocess? Repository: rC Clang CHANGES SINCE LAST ACTION https://reviews.llvm.org/D63681/new/ https://reviews.llvm.org/D63681 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits