1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/lib/Support/MemoryBuffer.cpp b/llvm/lib/Support/MemoryBuffer.cpp
index 689343206c5..a3a18c9283c 100644
--- a/llvm/lib/Support/MemoryBuffer.cpp
+++ b/llvm/lib/Support/MemoryBuffer.cpp
@@ -438,6 +438,18 @@ ErrorOr<std::unique_ptr<MemoryBuffer>> MemoryBuffer::getSTDIN() {
   return getMemoryBufferForStream(0, "<stdin>");
 }
 
+ErrorOr<std::unique_ptr<MemoryBuffer>>
+MemoryBuffer::getFileAsStream(const Twine &Filename) {
+  int FD;
+  std::error_code EC = sys::fs::openFileForRead(Filename, FD);
+  if (EC)
+    return EC;
+  ErrorOr<std::unique_ptr<MemoryBuffer>> Ret =
+      getMemoryBufferForStream(FD, Filename);
+  close(FD);
+  return Ret;
+}
+
 MemoryBufferRef MemoryBuffer::getMemBufferRef() const {
   StringRef Data = getBuffer();
   StringRef Identifier = getBufferIdentifier();