Add support for the __has_trivial_constructor type trait.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69245 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ExprCXX.cpp b/lib/AST/ExprCXX.cpp
index c2fcc5f..3634c20 100644
--- a/lib/AST/ExprCXX.cpp
+++ b/lib/AST/ExprCXX.cpp
@@ -170,6 +170,10 @@
     if (const RecordType *RT = QueriedType->getAsRecordType())
       return cast<CXXRecordDecl>(RT->getDecl())->isAbstract();
     return false;
+  case UTT_HasTrivialConstructor:
+    if (const RecordType *RT = QueriedType->getAsRecordType())
+      return cast<CXXRecordDecl>(RT->getDecl())->hasTrivialConstructor();
+   return false;
   }
 }