Index: lib/MC/MCAsmStreamer.cpp
===================================================================
--- lib/MC/MCAsmStreamer.cpp
+++ lib/MC/MCAsmStreamer.cpp
@@ -664,6 +664,7 @@
       case '\n': OS << "\\n"; break;
       case '\r': OS << "\\r"; break;
       case '\t': OS << "\\t"; break;
+      case '\v': OS << "\\v"; break;
       default:
         OS << '\\';
         OS << toOctal(C >> 6);
Index: lib/MC/MCParser/AsmParser.cpp
===================================================================
--- lib/MC/MCParser/AsmParser.cpp
+++ lib/MC/MCParser/AsmParser.cpp
@@ -2480,6 +2480,7 @@
     case 'n': Data += '\n'; break;
     case 'r': Data += '\r'; break;
     case 't': Data += '\t'; break;
+    case 'v': Data += '\v'; break;
     case '"': Data += '"'; break;
     case '\\': Data += '\\'; break;
     }
Index: test/MC/AsmParser/directive_ascii.s
===================================================================
--- test/MC/AsmParser/directive_ascii.s
+++ test/MC/AsmParser/directive_ascii.s
@@ -28,9 +28,9 @@
         .ascii "\1\01\07\08\001\0001\200\0"
         
 # CHECK: TEST5:
-# CHECK: .ascii "\b\f\n\r\t\\\""
+# CHECK: .ascii "\b\f\n\r\t\v\\\""
 TEST5:
-        .ascii "\b\f\n\r\t\\\""
+        .ascii "\b\f\n\r\t\v\\\""
         
 # CHECK: TEST6:
 # CHECK: .byte 66