Add null check again for queue

Author: uditagarwal97

sycl/source/handler.cpp

@@ -1908,27 +1908,28 @@ void handler::verifyDeviceHasProgressGuarantee(
 }
 
 bool handler::supportsUSMMemcpy2D() {
-  assert(impl->MSubmissionPrimaryQueue &&
-         "handler should not have a null primary queue.");
-  return checkContextSupports(
-      impl->MSubmissionPrimaryQueue->getContextImplPtr(),
-      UR_CONTEXT_INFO_USM_MEMCPY2D_SUPPORT);
+  auto &PrimQueue = impl->MSubmissionPrimaryQueue;
+  if (PrimQueue)
+    return checkContextSupports(PrimQueue->getContextImplPtr(),
+                                UR_CONTEXT_INFO_USM_MEMCPY2D_SUPPORT);
+  else
+    // Return true when handler_impl is constructed with a graph.
+    return true;
 }
 
 bool handler::supportsUSMFill2D() {
-  assert(impl->MSubmissionPrimaryQueue &&
-         "handler should not have a null primary queue.");
-  return checkContextSupports(
-      impl->MSubmissionPrimaryQueue->getContextImplPtr(),
-      UR_CONTEXT_INFO_USM_FILL2D_SUPPORT);
+  auto &PrimQueue = impl->MSubmissionPrimaryQueue;
+  if (PrimQueue)
+    return checkContextSupports(PrimQueue->getContextImplPtr(),
+                                UR_CONTEXT_INFO_USM_FILL2D_SUPPORT);
+  else
+    // Return true when handler_impl is constructed with a graph.
+    return true;
 }
 
 bool handler::supportsUSMMemset2D() {
-  assert(impl->MSubmissionPrimaryQueue &&
-         "handler should not have a null primary queue.");
-  return checkContextSupports(
-      impl->MSubmissionPrimaryQueue->getContextImplPtr(),
-      UR_CONTEXT_INFO_USM_FILL2D_SUPPORT);
+  // memset use the same UR check as fill2D.
+  return supportsUSMFill2D();
 }
 
 id<2> handler::computeFallbackKernelBounds(size_t Width, size_t Height) {