[SYCL] make intel::reqd_sub_group_size deprecat`ed

Author: dklochkov-emb

clang/lib/Sema/SemaSYCLDeclAttr.cpp

@@ -132,6 +132,13 @@ void SemaSYCL::checkDeprecatedSYCLAttributeSpelling(const ParsedAttr &A,
     return;
   }
 
+  // Additionally, diagnose deprecated [[intel::reqd_sub_group_size]] spelling
+  if (A.getKind() == ParsedAttr::AT_IntelReqdSubGroupSize &&
+      A.getAttrName()->isStr("reqd_sub_group_size") && A.getScopeName()->isStr("intel")) {
+    diagnoseDeprecatedAttribute(A, "sycl", "reqd_sub_group_size");
+    return;
+  }
+
   // Diagnose SYCL 2020 spellings in later SYCL modes.
   if (getLangOpts().getSYCLVersion() >= LangOptions::SYCL_2020) {
     // All attributes in the cl vendor namespace are deprecated in favor of a

sycl/test/warnings/warnings.cpp

@@ -4,6 +4,14 @@
 #include <sycl/sycl.hpp>
 
 using namespace sycl;
+
+
+class FunctorModern {
+public:
+  [[sycl::reqd_sub_group_size(16)]] void operator()() const {}
+};
+
+
 int main() {
   vec<long, 4> newVec;
   queue myQueue;
@@ -13,6 +21,8 @@ int main() {
     cgh.single_task<class kernel_name>([=]() {
       writeResult[0] = (vec<int, 4>{1, 2, 3, 4}).template convert<long>();
     });
+    FunctorModern fModern;
+    cgh.single_task<class kernel_name2>(fModern);
   });
   (void)event;
   return 0;

sycl/test/warnings/warnings_deprecated.cpp

@@ -0,0 +1,24 @@
+// RUN: %clangxx -fsycl -sycl-std=2020 -fsycl-device-only -Xclang -verify -Xclang -verify-ignore-unexpected=note %s -fsyntax-only -Wall -Wdeprecated -Wextra
+
+#include <sycl/sycl.hpp>
+
+
+using namespace sycl;
+queue q;
+
+
+class FunctorDeprecated {
+public:
+  // expected-warning@+1{{attribute 'intel::reqd_sub_group_size' is deprecated}}
+  [[intel::reqd_sub_group_size(16)]] void operator()() const {}
+};
+
+int main() {
+
+  q.submit([&](handler &h) {
+    FunctorDeprecated fDeprecated;
+    h.single_task<class kernel_name1>(fDeprecated);
+  });
+
+  return 0;
+}