[llvm] r191787 - [MC] When MCInstPrint::printAnnotation uses a comment stream, it has to ensure

[Quentin Colombet]

Author: qcolombet
Date: Tue Oct  1 14:21:24 2013
New Revision: 191787

URL: http://llvm.org/viewvc/llvm-project?rev=191787&view=rev
Log:
[MC] When MCInstPrint::printAnnotation uses a comment stream, it has to ensure
that each comment ends with a newline to match the definition in the header
file.

This is part of <rdar://problem/14687488>.

Modified:
    llvm/trunk/lib/MC/MCInstPrinter.cpp

Modified: llvm/trunk/lib/MC/MCInstPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/MCInstPrinter.cpp?rev=191787&r1=191786&r2=191787&view=diff
==============================================================================
--- llvm/trunk/lib/MC/MCInstPrinter.cpp (original)
+++ llvm/trunk/lib/MC/MCInstPrinter.cpp Tue Oct  1 14:21:24 2013
@@ -31,9 +31,13 @@ void MCInstPrinter::printRegName(raw_ost
 
 void MCInstPrinter::printAnnotation(raw_ostream &OS, StringRef Annot) {
   if (!Annot.empty()) {
-    if (CommentStream)
+    if (CommentStream) {
       (*CommentStream) << Annot;
-    else
+      // By definition (see MCInstPrinter.h), CommentStream must end with
+      // a newline after each comment.
+      if (Annot.back() != '\n')
+        (*CommentStream) << '\n';
+    } else
       OS << " " << MAI.getCommentString() << " " << Annot;
   }
 }