[OpenCL] Add support of cl_intel_device_side_avc_motion_estimation extension

Summary:
Documentation can be found at https://www.khronos.org/registry/OpenCL/extensions/intel/cl_intel_device_side_avc_motion_estimation.txt

Patch by Kristina Bessonova


Reviewers: Anastasia, yaxunl, shafik

Reviewed By: Anastasia

Subscribers: arphaman, sidorovd, AlexeySotkin, krisb, bader, asavonic, cfe-commits

Differential Revision: https://reviews.llvm.org/D51484

llvm-svn: 346392
diff --git a/clang/lib/Sema/Sema.cpp b/clang/lib/Sema/Sema.cpp
index d6fe37f..064de02 100644
--- a/clang/lib/Sema/Sema.cpp
+++ b/clang/lib/Sema/Sema.cpp
@@ -320,6 +320,10 @@
 #define GENERIC_IMAGE_TYPE_EXT(Type, Id, Ext) \
     setOpenCLExtensionForType(Context.Id, Ext);
 #include "clang/Basic/OpenCLImageTypes.def"
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
+    addImplicitTypedef(#ExtType, Context.Id##Ty); \
+    setOpenCLExtensionForType(Context.Id##Ty, #Ext);
+#include "clang/Basic/OpenCLExtensionTypes.def"
     };
 
   if (Context.getTargetInfo().hasBuiltinMSVaList()) {