Index: .gitattributes
===================================================================
--- /dev/null
+++ .gitattributes
@@ -0,0 +1,12 @@
+# binary files
+test/Object/Inputs/*.a-* binary
+test/tools/dsymutil/Inputs/* binary
+test/tools/llvm-ar/Inputs/*.lib binary
+test/tools/llvm-objdump/Inputs/*.a binary
+test/tools/llvm-rc/Inputs/* binary
+test/tools/llvm-strings/Inputs/numbers binary
+test/MC/AsmParser/incbin_abcd binary
+test/YAMLParser/spec-09-02.test binary
+
+# Windows line ending test
+test/MC/AsmParser/preserve-comments-crlf.s text eol=crlf
Index: lib/MC/MCParser/AsmLexer.cpp
===================================================================
--- lib/MC/MCParser/AsmLexer.cpp
+++ lib/MC/MCParser/AsmLexer.cpp
@@ -210,6 +210,8 @@
   int CurChar = getNextChar();
   while (CurChar != '\n' && CurChar != '\r' && CurChar != EOF)
     CurChar = getNextChar();
+  if (CurChar == '\r' && CurPtr != CurBuf.end() && *CurPtr == '\n')
+    ++CurPtr;
 
   // If we have a CommentConsumer, notify it about the comment.
   if (CommentConsumer) {
Index: test/MC/AsmParser/preserve-comments-crlf.s
===================================================================
--- /dev/null
+++ test/MC/AsmParser/preserve-comments-crlf.s
@@ -0,0 +1,13 @@
+	#RUN: llvm-mc -preserve-comments -n -triple i386-linux-gnu < %s > %t
+	#RUN: diff %s %t
+	.text
+
+foo:	#Comment here
+	#comment here
+	nop
+	#if DIRECTIVE COMMENT
+	## WHOLE LINE COMMENT
+	cmpl	$196, %eax	## EOL COMMENT
+	#endif
+	.ident	"clang version 3.9.0"
+	.section	".note.GNU-stack","",@progbits