[Support] Remove getPathFromOpenFD, it was unused

Summary:
It was added to support clang warnings about includes with case
mismatches, but it ended up not being necessary.

Reviewers: twoh, rafael

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D36328

llvm-svn: 310078

1 files changed, 0 insertions, 36 deletions

diff --git a/llvm/lib/Support/Windows/Path.inc b/llvm/lib/Support/Windows/Path.inc
index b00d3905f65..60c03645a57 100644
--- a/llvm/lib/Support/Windows/Path.inc
+++ b/llvm/lib/Support/Windows/Path.inc
@@ -959,42 +959,6 @@ std::error_code openFileForWrite(const Twine &Name, int &ResultFD,
   return std::error_code();
 }
 
-std::error_code getPathFromOpenFD(int FD, SmallVectorImpl<char> &ResultPath) {
-  HANDLE FileHandle = reinterpret_cast<HANDLE>(::_get_osfhandle(FD));
-  if (FileHandle == INVALID_HANDLE_VALUE)
-    return make_error_code(errc::bad_file_descriptor);
-
-  DWORD CharCount;
-  SmallVector<wchar_t, 1024> TempPath;
-  do {
-    CharCount = ::GetFinalPathNameByHandleW(FileHandle, TempPath.begin(),
-                                            TempPath.capacity(),
-                                            FILE_NAME_NORMALIZED);
-    if (CharCount < TempPath.capacity())
-      break;
-
-    // Reserve sufficient space for the path as well as the null character. Even
-    // though the API does not document that it is required, if we reserve just
-    // CharCount space, the function call will not store the resulting path and
-    // still report success.
-    TempPath.reserve(CharCount + 1);
-  } while (true);
-
-  if (CharCount == 0)
-    return mapWindowsError(::GetLastError());
-
-  TempPath.set_size(CharCount);
-
-  // On earlier Windows releases, the character count includes the terminating
-  // null.
-  if (TempPath.back() == L'\0') {
-    --CharCount;
-    TempPath.pop_back();
-  }
-
-  return windows::UTF16ToUTF8(TempPath.data(), CharCount, ResultPath);
-}
-
 std::error_code remove_directories(const Twine &path, bool IgnoreErrors) {
   // Convert to utf-16.
   SmallVector<wchar_t, 128> Path16;