kc3-lang/angle/src/tests/perf_tests/BitSetIteratorPerf.cpp

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• Author : Alexey Knyazev
  Date : 2020-03-12 19:02:03
  Hash : e6519445
  Message : Implement ScanForward64 on 32-bit platforms This unlocks opt-in usage of BitSet64 on 32-bit platforms. It is slightly faster than IterableBitSet when the amount of bits is greater than 32. Bug: angleproject:4473 Change-Id: I230784acc871e13b1f94c87503f6bb869dcd3a68 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2100969 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• src/tests/perf_tests/BitSetIteratorPerf.cpp

• //
  // Copyright 2015 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // IndexDataManagerPerfTest:
  //   Performance test for index buffer management.
  //
  
  #include "ANGLEPerfTest.h"
  
  #include <gmock/gmock.h>
  
  #include "common/bitset_utils.h"
  
  using namespace testing;
  
  namespace
  {
  
  template <typename T>
  class BitSetIteratorPerfTest : public ANGLEPerfTest
  {
    public:
      BitSetIteratorPerfTest();
  
      void step() override;
  
      T mBits;
  };
  
  template <typename T>
  BitSetIteratorPerfTest<T>::BitSetIteratorPerfTest()
      : ANGLEPerfTest("BitSetIteratorPerf", "", "_run", 1)
  {}
  
  template <typename T>
  void BitSetIteratorPerfTest<T>::step()
  {
      mBits.flip();
  
      for (size_t bit : mBits)
      {
          ANGLE_UNUSED_VARIABLE(bit);
      }
  
      mBits.reset();
  }
  
  // These type names unfortunately don't get printed correctly in Gtest.
  using TestTypes = Types<angle::IterableBitSet<32>,
                          angle::BitSet32<32>,
                          angle::BitSet64<32>,
                          angle::IterableBitSet<64>,
                          angle::BitSet64<64>>;
  TYPED_TEST_SUITE(BitSetIteratorPerfTest, TestTypes);
  
  TYPED_TEST(BitSetIteratorPerfTest, Run)
  {
      this->run();
  }
  
  }  // anonymous namespace