Make a simple handler, align device_global

Author: Fznamznon

clang/include/clang/Basic/Attr.td

@@ -1267,6 +1267,7 @@ def SYCLDeviceGlobal : InheritableAttr {
   let LangOpts = [SYCLIsDevice, SilentlyIgnoreSYCLIsHost];
   // Only used internally by the SYCL implementation
   let Documentation = [Undocumented];
+  let SimpleHandler = 1;
 }
 
 // Marks functions which must not be vectorized via horizontal SIMT widening,

clang/lib/Sema/SemaDeclAttr.cpp

@@ -10429,9 +10429,6 @@ static void ProcessDeclAttribute(Sema &S, Scope *scope, Decl *D,
   case ParsedAttr::AT_SYCLSpecialClass:
     handleSimpleAttribute<SYCLSpecialClassAttr>(S, D, AL);
     break;
-  case ParsedAttr::AT_SYCLDeviceGlobal:
-    handleSimpleAttribute<SYCLDeviceGlobalAttr>(S, D, AL);
-    break;
   case ParsedAttr::AT_SYCLDevice:
     handleSYCLDeviceAttr(S, D, AL);
     break;

clang/test/CodeGenSYCL/Inputs/sycl.hpp

@@ -134,7 +134,7 @@ template <typename T>
 class [[__sycl_detail__::device_global]] device_global {
 public:
   const T &get() const noexcept { return *Data; }
-  device_global() = default;
+  device_global() {}
 
 private:
   T *Data;

clang/test/CodeGenSYCL/device_global_int_footer_header.cpp

@@ -104,7 +104,7 @@ namespace {
 struct HasVarTemplate {
   constexpr HasVarTemplate() {}
   template <typename T>
-  static constexpr device_global<T> VarTempl{};
+  static const device_global<T> VarTempl;
 };
 
 } // namespace