[SYCL] Add test for usm buffer location properties (#955)

Resolves intel/llvm#5750
The test intended to test changes in PR: intel/llvm#5634

Author: sherry-yuan

SYCL/USM/buffer_location.cpp

@@ -0,0 +1,77 @@
+// RUN: %clangxx -fsycl -fsycl-targets=%sycl_triple %s -o %t1.out
+// RUN: %HOST_RUN_PLACEHOLDER %t1.out
+// RUN: %CPU_RUN_PLACEHOLDER %t1.out
+// RUN: %ACC_RUN_PLACEHOLDER %t1.out
+
+//==------------------- buffer_location.cpp - USM buffer location ----------==//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <CL/sycl.hpp>
+#include <iostream>
+#include <memory>
+
+using namespace cl::sycl;
+
+// Pointer wrapper allows custom deleter to clean up resources
+struct ptr_wrapper {
+  sycl::context m_ctx;
+  int *m_ptr;
+  ptr_wrapper(sycl::context ctx, int *ptr) {
+    m_ctx = ctx;
+    m_ptr = ptr;
+  }
+  ~ptr_wrapper() { sycl::free(m_ptr, m_ctx); }
+};
+
+int main() {
+  queue q;
+  auto dev = q.get_device();
+  auto ctxt = q.get_context();
+
+  if (!dev.get_info<info::device::usm_device_allocations>())
+    return 0;
+
+  int true_buf_loc = 3;
+  auto test_src_ptr_unq = std::unique_ptr<ptr_wrapper>(new ptr_wrapper(
+      ctxt, malloc_device<int>(
+                1, dev, ctxt,
+                property_list{
+                    ext::intel::experimental::property::usm::buffer_location(
+                        true_buf_loc)})));
+  if (test_src_ptr_unq == nullptr) {
+    return -1;
+  }
+  auto test_dst_ptr_unq = std::unique_ptr<ptr_wrapper>(new ptr_wrapper(
+      ctxt, malloc_device<int>(
+                1, dev, ctxt,
+                property_list{
+                    ext::intel::experimental::property::usm::buffer_location(
+                        true_buf_loc)})));
+  if (test_dst_ptr_unq == nullptr) {
+    return -1;
+  }
+  int src_val = 3;
+  int dst_val = 4;
+  int *test_src_ptr = test_src_ptr_unq.get()->m_ptr;
+  int *test_dst_ptr = test_dst_ptr_unq.get()->m_ptr;
+  event e0 = q.memcpy(test_src_ptr, &src_val, sizeof(int));
+  e0.wait();
+  event e1 = q.memcpy(test_dst_ptr, &dst_val, sizeof(int));
+  e1.wait();
+
+  auto e2 = q.submit([=](handler &cgh) {
+    cgh.single_task<class foo>([=]() { *test_src_ptr = *test_dst_ptr; });
+  });
+  e2.wait();
+
+  if (*test_src_ptr != dst_val) {
+    return -1;
+  }
+
+  return 0;
+}