[SYCL] Stop throwing exception when passing empty accessor to handler::require() (#10597)

According to the changes made in
https://github.com/KhronosGroup/SYCL-Docs/pull/434/files, empty
accessors can now be passed to `handler::require()` without throwing.

---------

Signed-off-by: Maronas, Marcos <[email protected]>

Author: maarquitos14

sycl/include/sycl/handler.hpp

@@ -1601,9 +1601,6 @@ class __SYCL_EXPORT handler {
   template <typename DataT, int Dims, access::mode AccMode,
             access::target AccTarget, access::placeholder isPlaceholder>
   void require(accessor<DataT, Dims, AccMode, AccTarget, isPlaceholder> Acc) {
-    if (Acc.empty())
-      throw sycl::exception(make_error_code(errc::invalid),
-                            "require() cannot be called on empty accessors");
     if (Acc.is_placeholder())
       associateWithHandler(&Acc, AccTarget);
   }

sycl/test-e2e/Basic/accessor/accessor.cpp

@@ -818,20 +818,18 @@ int main() {
     }
   }
 
-  // SYCL2020 4.9.4.1: calling require() on empty accessor should throw
+  // SYCL2020 4.9.4.1: calling require() on empty accessor should not throw.
   {
     sycl::queue q;
     try {
       AccT acc;
 
       q.submit([&](sycl::handler &cgh) { cgh.require(acc); });
       q.wait_and_throw();
-      assert(false && "we should not be here, missing exception");
     } catch (sycl::exception &e) {
-      std::cout << "exception received: " << e.what() << std::endl;
-      assert(e.code() == sycl::errc::invalid && "error code should be invalid");
+      assert("Unexpected exception");
     } catch (...) {
-      std::cout << "Some other exception (line " << __LINE__ << ")"
+      std::cout << "Some other unexpected exception (line " << __LINE__ << ")"
                 << std::endl;
       return 1;
     }