Revert "[Driver] Move detectLibcxxIncludePath to ToolChain"

This reverts commit a594fd28e373cb7cd348cf01f6a90e055bf6cf6d which
is failign on some bots.

1 files changed, 0 insertions, 23 deletions

diff --git a/clang/lib/Driver/ToolChain.cpp b/clang/lib/Driver/ToolChain.cpp
index 8e98e32..8991216 100644
--- a/clang/lib/Driver/ToolChain.cpp
+++ b/clang/lib/Driver/ToolChain.cpp
@@ -924,29 +924,6 @@ void ToolChain::addExternCSystemIncludeIfExists(const ArgList &DriverArgs,
   }
 }
 
-std::string ToolChain::detectLibcxxIncludePath(StringRef Base) const {
-  std::error_code EC;
-  int MaxVersion = 0;
-  std::string MaxVersionString;
-  for (llvm::vfs::directory_iterator LI = getVFS().dir_begin(Base, EC), LE;
-       !EC && LI != LE; LI = LI.increment(EC)) {
-    StringRef VersionText = llvm::sys::path::filename(LI->path());
-    int Version;
-    if (VersionText[0] == 'v' &&
-        !VersionText.slice(1, StringRef::npos).getAsInteger(10, Version)) {
-      if (Version > MaxVersion) {
-        MaxVersion = Version;
-        MaxVersionString = std::string(VersionText);
-      }
-    }
-  }
-  if (!MaxVersion)
-    return "";
-  SmallString<128> P(Base);
-  llvm::sys::path::append(P, MaxVersionString);
-  return std::string(P.str());
-}
-
 void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
                                              ArgStringList &CC1Args) const {
   // Header search paths should be handled by each of the subclasses.