Fix ROCm 6.4 warnings (#47)

* Removed __AMDGCN_WAVEFRONT_SIZE

* Added unit test to validate WF_SIZE

tests/unit_tests/wavefront_size_gtest.cpp

@@ -0,0 +1,41 @@
+/******************************************************************************
+ * Copyright (c) 2024 Advanced Micro Devices, Inc. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *****************************************************************************/
+
+#include "wavefront_size_gtest.hpp"
+
+#include "../src/util.hpp"
+
+using namespace rocshmem;
+
+TEST_F(WavefrontSizeTestFixture, constant_matches_runtime) {
+  int device_count = 0;
+  hipDeviceProp_t prop;
+
+  CHECK_HIP(hipGetDeviceCount(&device_count));
+  ASSERT_GT(device_count, 0);
+
+  for (int i = 0; i < device_count; i++) {
+    CHECK_HIP(hipGetDeviceProperties(&prop, i));
+    ASSERT_EQ(WF_SIZE, prop.warpSize);
+  }
+}
+