Implement the __is_trivially_copyable type trait

llvm-svn: 131270
diff --git a/clang/lib/Parse/ParseTentative.cpp b/clang/lib/Parse/ParseTentative.cpp
index 1c4e2b3..12152c3 100644
--- a/clang/lib/Parse/ParseTentative.cpp
+++ b/clang/lib/Parse/ParseTentative.cpp
@@ -664,6 +664,7 @@
   case tok::kw___is_pod:
   case tok::kw___is_polymorphic:
   case tok::kw___is_trivial:
+  case tok::kw___is_trivially_copyable:
   case tok::kw___is_union:
   case tok::kw___uuidof:
     return TPResult::True();