[MC] Fix regression tests on Windows when git “core.autocrlf” is set to true.

Differential Revision: https://reviews.llvm.org/D39737

This is the second attempt to commit this. The test was broken on Linux in the first attempt.

llvm-svn: 318560

.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

docs/GettingStartedVS.rst

@@ -76,6 +76,11 @@ Here's the short story for getting up and running quickly with LLVM:
 
    * With anonymous Subversion access:
 
+     *Note:* some regression tests require Unix-style line ending (``\n``). To
+     pass all regression tests, please add two lines *enable-auto-props = yes*
+     and *\* = svn:mime-type=application/octet-stream* to
+     ``C:\Users\<username>\AppData\Roaming\Subversion\config``.
+
       1. ``cd <where-you-want-llvm-to-live>``
       2. ``svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm``
       3. ``cd llvm``

lib/MC/MCParser/AsmLexer.cpp

@@ -210,6 +210,8 @@ AsmToken AsmLexer::LexLineComment() {
   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) {