Add OpenCL samplers as Clang builtin types and check sampler related restrictions.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174601 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/DeclSpec.cpp b/lib/Sema/DeclSpec.cpp
index 6d30b89..569352e 100644
--- a/lib/Sema/DeclSpec.cpp
+++ b/lib/Sema/DeclSpec.cpp
@@ -286,6 +286,7 @@
     case TST_image2d_t:
     case TST_image2d_array_t:
     case TST_image3d_t:
+    case TST_sampler_t:
     case TST_event_t:
       return false;
 
@@ -428,6 +429,7 @@
   case DeclSpec::TST_image2d_t:   return "image2d_t";
   case DeclSpec::TST_image2d_array_t: return "image2d_array_t";
   case DeclSpec::TST_image3d_t:   return "image3d_t";
+  case DeclSpec::TST_sampler_t:   return "sampler_t";
   case DeclSpec::TST_event_t:     return "event_t";
   case DeclSpec::TST_error:       return "(error)";
   }