libreoffice/tools/qa/cppunit/test_cpu_runtime_detection_SSSE3.cxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#include <tools/simdsupport.hxx>

#ifdef LO_SSSE3_AVAILABLE

#include <cppunit/TestAssert.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <cppunit/plugin/TestPlugIn.h>

#include <tools/cpuid.hxx>

namespace
{
class CpuRuntimeDetection_SSSE3 : public CppUnit::TestFixture
{
public:
    void checkSSSE3();
    void testCpuRuntimeDetection();

    CPPUNIT_TEST_SUITE(CpuRuntimeDetection_SSSE3);
    CPPUNIT_TEST(testCpuRuntimeDetection);
    CPPUNIT_TEST_SUITE_END();
};

void CpuRuntimeDetection_SSSE3::testCpuRuntimeDetection()
{
    // can only run if this function if CPU supports SSSE3
    if (cpuid::isCpuInstructionSetSupported(cpuid::InstructionSetFlags::SSSE3))
        checkSSSE3();
}

void CpuRuntimeDetection_SSSE3::checkSSSE3()
{
    // Try some SSSE3 intrinsics calculation
    __m128i a = _mm_set1_epi32(3);
    __m128i b = _mm_set1_epi32(3);
    __m128i c = _mm_maddubs_epi16(a, b);

    // Check result is 9
    CPPUNIT_ASSERT_EQUAL(0xFFFF, _mm_movemask_epi8(_mm_cmpeq_epi32(c, _mm_set1_epi32(9))));
}

CPPUNIT_TEST_SUITE_REGISTRATION(CpuRuntimeDetection_SSSE3);

} // end anonymous namespace

#endif

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