[PATCH] D27840: COFF: Cache the result of library searches.

[Rui Ueyama via Phabricator via llvm-commits]

ruiu added a comment.

LGTM. Impressive speedup! Maybe we could speed this up even more by caching directory contents we visited? I don't know how much time we still spend on file searching after this patch though.



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Comment at: lld/COFF/Driver.h:93
   std::vector<StringRef> SearchPaths;
-  std::set<std::string> VisitedFiles;
+  std::set<std::string> VisitedFiles, VisitedLibs;
 
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https://reviews.llvm.org/D27840