Introduce benchmark test for rotate_cpx_vector

This commit introduces google benchmark library and one benchmark for
rotate_cpx_vector.  Also extracted common tools used in testcases for
generation and allocation of byte aligned vectors in phy_test_tools.hpp

openair1/PHY/TOOLS/tests/benchmark_rotate_vector.cpp

@@ -0,0 +1,59 @@
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#include <stdint.h>
+#include <vector>
+#include <algorithm>
+#include <numeric>
+extern "C" {
+#include "openair1/PHY/TOOLS/tools_defs.h"
+struct configmodule_interface_s;
+struct configmodule_interface_s *uniqCfg = NULL;
+void exit_function(const char *file, const char *function, const int line, const char *s, const int assert)
+{
+  if (assert) {
+    abort();
+  } else {
+    exit(EXIT_SUCCESS);
+  }
+}
+}
+#include <cstdio>
+#include "common/utils/LOG/log.h"
+#include "benchmark/benchmark.h"
+#include "openair1/PHY/TOOLS/phy_test_tools.hpp"
+
+static void BM_rotate_cpx_vector(benchmark::State &state)
+{
+  int vector_size = state.range(0);
+  auto input_complex_16 = generate_random_c16(vector_size);
+  auto input_alpha = generate_random_c16(vector_size);
+  AlignedVector512<c16_t> output;
+  output.resize(vector_size);
+  int shift = 2;
+  for (auto _ : state) {
+    rotate_cpx_vector(input_complex_16.data(), input_alpha.data(), output.data(), vector_size, shift);
+  }
+}
+
+BENCHMARK(BM_rotate_cpx_vector)->RangeMultiplier(4)->Range(100, 20000);
+
+BENCHMARK_MAIN();