llvm/unittests/tools/llvm-exegesis/PerfHelperTest.cpp

   1 //===-- PerfHelperTest.cpp --------------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "PerfHelper.h"
  10 #include "llvm/Config/config.h"
  11 #include "gmock/gmock.h"
  12 #include "gtest/gtest.h"
  13
  14 namespace llvm {
  15 namespace exegesis {
  16 namespace pfm {
  17 namespace {
  18
  19 using ::testing::IsEmpty;
  20 using ::testing::Not;
  21
  22 TEST(PerfHelperTest, FunctionalTest) {
  23 #ifdef HAVE_LIBPFM
  24   ASSERT_FALSE(pfmInitialize());
  25   PerfEvent Event("CYCLES:u");
  26   ASSERT_TRUE(Event.valid());
  27   EXPECT_EQ(Event.name(), "CYCLES:u");
  28   EXPECT_THAT(Event.getPfmEventString(), Not(IsEmpty()));
  29   Counter Cnt(std::move(Event));
  30   Cnt.start();
  31   Cnt.stop();
  32   Cnt.read();
  33   pfmTerminate();
  34 #else
  35   ASSERT_TRUE(pfmInitialize());
  36 #endif
  37 }
  38
  39 } // namespace
  40 } // namespace pfm
  41 } // namespace exegesis
  42 } // namespace llvm