Added support for attribute "noreturn."


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@47689 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Parse/AttributeList.cpp b/Parse/AttributeList.cpp
index 63d07b3..4ceece8 100644
--- a/Parse/AttributeList.cpp
+++ b/Parse/AttributeList.cpp
@@ -49,7 +49,7 @@
     Str += 2;
     Len -= 4;
   }
-  
+
   switch (Len) {
   case 6: 
     if (!memcmp(Str, "packed", 6)) return AT_packed;
@@ -59,6 +59,7 @@
     break;
   case 8:
     if (!memcmp(Str, "annotate", 8)) return AT_annotate;
+    if (!memcmp(Str, "noreturn", 8)) return AT_noreturn;
     break;
   case 11:   
     if (!memcmp(Str, "vector_size", 11)) return AT_vector_size;