[SYCL] Add SYCL device code attribute to clang.

Signed-off-by: Vladimir Lazarev <vladimir.lazarev@intel.com>

clang/include/clang/Basic/Attr.td

@@ -294,6 +294,7 @@ class LangOpt<string name, bit negated = 0> {
 def MicrosoftExt : LangOpt<"MicrosoftExt">;
 def Borland : LangOpt<"Borland">;
 def CUDA : LangOpt<"CUDA">;
+def SYCL : LangOpt<"SYCL">;
 def COnly : LangOpt<"CPlusPlus", 1>;
 def CPlusPlus : LangOpt<"CPlusPlus">;
 def OpenCL : LangOpt<"OpenCL">;
@@ -983,6 +984,13 @@ def CUDAShared : InheritableAttr {
   let Documentation = [Undocumented];
 }
 
+def SYCLDevice : InheritableAttr {
+  let Spellings = [GNU<"sycl_device">];
+  let Subjects = SubjectList<[Function, Var]>;
+  let LangOpts = [SYCL];
+  let Documentation = [Undocumented];
+}
+
 def C11NoReturn : InheritableAttr {
   let Spellings = [Keyword<"_Noreturn">];
   let Subjects = SubjectList<[Function], ErrorDiag>;

clang/lib/CodeGen/CodeGenModule.cpp

@@ -2148,7 +2148,7 @@ void CodeGenModule::EmitGlobal(GlobalDecl GD) {
     return emitIFuncDefinition(GD);
 
   if (LangOpts.SYCL) {
-    if (!Global->hasAttr<OpenCLKernelAttr>())
+    if (!Global->hasAttr<SYCLDeviceAttr>())
       return;
   }
 

clang/lib/Sema/SemaSYCL.cpp

@@ -46,8 +46,11 @@ FunctionDecl *CreateSYCLKernelFunction(ASTContext &Context, StringRef Name,
   Result->setParams(Params);
   // TODO: Add SYCL specific attribute for kernel and all functions called
   // by kernel.
+  Result->addAttr(SYCLDeviceAttr::CreateImplicit(Context));
   Result->addAttr(OpenCLKernelAttr::CreateImplicit(Context));
   Result->addAttr(AsmLabelAttr::CreateImplicit(Context, Name));
+  // To see kernel in ast-dump.
+  DC->addDecl(Result);
   return Result;
 }
 

clang/test/Misc/pragma-attribute-supported-attributes-list.test

@@ -116,6 +116,7 @@
 // CHECK-NEXT: ReturnTypestate (SubjectMatchRule_function, SubjectMatchRule_variable_is_parameter)
 // CHECK-NEXT: ReturnsNonNull (SubjectMatchRule_objc_method, SubjectMatchRule_function)
 // CHECK-NEXT: ReturnsTwice (SubjectMatchRule_function)
+// CHECK-NEXT: SYCLDevice (SubjectMatchRule_function, SubjectMatchRule_variable)
 // CHECK-NEXT: ScopedLockable (SubjectMatchRule_record)
 // CHECK-NEXT: Section (SubjectMatchRule_function, SubjectMatchRule_variable_is_global, SubjectMatchRule_objc_method, SubjectMatchRule_objc_property)
 // CHECK-NEXT: SetTypestate (SubjectMatchRule_function_is_member)

clang/test/SemaSYCL/sycl-device-attr.cpp

@@ -0,0 +1,20 @@
+// RUN: %clang -S --sycl -I /sycl_include_path -I /opencl_include_path -Xclang -ast-dump %s | FileCheck %s
+// XFAIL: *
+#include <CL/sycl.hpp>
+
+
+using namespace cl::sycl;
+
+int main() {
+
+  queue myQueue;
+
+  myQueue.submit([&](handler &cgh) {
+
+    cgh.single_task<class kernel_function>([=]() {
+    });
+  });
+
+  myQueue.wait();
+}
+// CHECK: SYCLDeviceAttr