[SYCL][Level Zero][USM] Add a test for read-only shared alloc (#1409)

Author: aelovikov-intel

SYCL/USM/shared_read_only.cpp

@@ -0,0 +1,22 @@
+// REQUIRES: level_zero
+// RUN: %clangxx -fsycl -fsycl-targets=%sycl_triple %s -o %t.out
+// RUN: env ZE_DEBUG=1 %GPU_RUN_PLACEHOLDER  %t.out 2> %t1.out; cat %t1.out %GPU_CHECK_PLACEHOLDER
+
+#include <sycl/sycl.hpp>
+
+int main() {
+  sycl::queue q;
+  auto *p1 = sycl::malloc_shared<float>(
+      42, q, {sycl::ext::oneapi::property::usm::device_read_only()});
+  auto *p2 = sycl::malloc_shared<float>(42, q);
+
+  // CHECK: zeMemAllocShared
+  // CHECK: {{zeCommandListAppendMemAdvise.*ZE_MEMORY_ADVICE_SET_READ_MOSTLY}}
+  // CHECK: {{zeCommandListAppendMemAdvise.*ZE_MEMORY_ADVICE_SET_PREFERRED_LOCATION*}}
+  // CHECK: zeMemAllocShared
+  // CHECK-NOT: MemAdvise
+
+  free(p2, q);
+  free(p1, q);
+  return 0;
+}