CPU intrinsics detection (SSE, AVX)

Adds CPU intrinsics detection in configure pass for compile time
detection and "cpuid" runtime detection of which CPU instruction
sets are available on the user device.

Change-Id: I0ee4d0b22a7c51f72796d43e7383a31d03b437ad
Reviewed-on: https://gerrit.libreoffice.org/75175
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

1 files changed, 74 insertions, 0 deletions

diff --git a/tools/qa/cppunit/test_cpuid.cxx b/tools/qa/cppunit/test_cpuid.cxx
new file mode 100644
index 000000000000..fdb19d0ec133
--- /dev/null
+++ b/tools/qa/cppunit/test_cpuid.cxx
@@ -0,0 +1,74 @@
+/* -*- 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 <cppunit/TestAssert.h>
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
+#include <cppunit/plugin/TestPlugIn.h>
+#include <tools/cpuid.hxx>
+#include <tools/simd.hxx>
+#include <rtl/ustring.hxx>
+
+namespace
+{
+class CpuInstructionSetSupport : public CppUnit::TestFixture
+{
+public:
+    void testCpuInstructionSetSupport();
+
+    CPPUNIT_TEST_SUITE(CpuInstructionSetSupport);
+    CPPUNIT_TEST(testCpuInstructionSetSupport);
+    CPPUNIT_TEST_SUITE_END();
+};
+
+void CpuInstructionSetSupport::testCpuInstructionSetSupport()
+{
+    OUString aString = cpuid::instructionSetSupportedString();
+
+    if (cpuid::isCpuInstructionSetSupported(cpuid::InstructionSetFlags::SSE2))
+    {
+        CPPUNIT_ASSERT(aString.indexOf("SSE2") >= 0);
+    }
+
+    if (cpuid::isCpuInstructionSetSupported(cpuid::InstructionSetFlags::SSSE3))
+    {
+        CPPUNIT_ASSERT(aString.indexOf("SSSE3") >= 0);
+    }
+
+    if (cpuid::isCpuInstructionSetSupported(cpuid::InstructionSetFlags::AVX))
+    {
+        CPPUNIT_ASSERT(aString.indexOf("AVX") > 0);
+    }
+
+    if (cpuid::isCpuInstructionSetSupported(cpuid::InstructionSetFlags::AVX2))
+    {
+        CPPUNIT_ASSERT(aString.indexOf("AVX2") > 0);
+    }
+
+#ifdef LO_SSE2_AVAILABLE
+    CPPUNIT_ASSERT_EQUAL(cpuid::hasSSE2(),
+                         cpuid::isCpuInstructionSetSupported(cpuid::InstructionSetFlags::SSE2));
+#endif
+
+#ifdef LO_SSSE3_AVAILABLE
+    CPPUNIT_ASSERT_EQUAL(cpuid::hasSSSE3(),
+                         cpuid::isCpuInstructionSetSupported(cpuid::InstructionSetFlags::SSE2));
+#endif
+
+#ifdef LO_AVX2_AVAILABLE
+    CPPUNIT_ASSERT_EQUAL(cpuid::hasAVX2(),
+                         cpuid::isCpuInstructionSetSupported(cpuid::InstructionSetFlags::AVX2));
+#endif
+}
+
+CPPUNIT_TEST_SUITE_REGISTRATION(CpuInstructionSetSupport);
+
+} // end anonymous namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */