Change subject from FunctionLike to Function; add tests for subject

FunctionLike also applies to function pointers, which is probably not
what we want.

Signed-off-by: Andrew Savonichev <[email protected]>

Author: Andrew Savonichev

clang/include/clang/Basic/Attr.td

@@ -1093,7 +1093,7 @@ def SYCLDeviceIndirectlyCallable : InheritableAttr {
 }
 def SYCLIntelKernelArgsRestrict : InheritableAttr {
   let Spellings = [ CXX11<"intel", "kernel_args_restrict"> ];
-  let Subjects = SubjectList<[ FunctionLike ], ErrorDiag>;
+  let Subjects = SubjectList<[Function], ErrorDiag>;
   let LangOpts = [ SYCLIsDevice, SYCLIsHost ];
   let Documentation = [ SYCLIntelKernelArgsRestrictDocs ];
 }

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

@@ -131,7 +131,7 @@
 // CHECK-NEXT: ReturnsTwice (SubjectMatchRule_function)
 // CHECK-NEXT: SYCLDevice (SubjectMatchRule_function)
 // CHECK-NEXT: SYCLDeviceIndirectlyCallable (SubjectMatchRule_function)
-// CHECK-NEXT: SYCLIntelKernelArgsRestrict (SubjectMatchRule_hasType_functionType)
+// CHECK-NEXT: SYCLIntelKernelArgsRestrict (SubjectMatchRule_function)
 // CHECK-NEXT: SYCLKernel (SubjectMatchRule_function)
 // CHECK-NEXT: ScopedLockable (SubjectMatchRule_record)
 // CHECK-NEXT: Section (SubjectMatchRule_function, SubjectMatchRule_variable_is_global, SubjectMatchRule_objc_method, SubjectMatchRule_objc_property)

clang/test/SemaSYCL/intel-restrict.cpp

@@ -4,7 +4,6 @@
 [[intel::kernel_args_restrict]] // expected-warning{{'kernel_args_restrict' attribute ignored}}
 void func_ignore() {}
 
-
 struct FuncObj {
   [[intel::kernel_args_restrict]]
   void operator()() {}
@@ -13,6 +12,9 @@ struct FuncObj {
 template <typename name, typename Func>
 __attribute__((sycl_kernel)) void kernel(Func kernelFunc) {
   kernelFunc();
+#ifdef CHECKDIAG
+  [[intel::kernel_args_restrict]] int invalid = 42; // expected-error{{'kernel_args_restrict' attribute only applies to functions}}
+#endif
 }
 
 int main() {