109 lines
2.5 KiB
C++
109 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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*/
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#pragma once
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#include <sal/config.h>
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#include <tools/toolsdllapi.h>
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#include <o3tl/typed_flags_set.hxx>
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#include <rtl/ustring.hxx>
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/*
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Do NOT include this header in source files compiled with CPU-specific code.
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TODO: For the header to be safe that way, it should be free of any templates
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or inline functions, otherwise their possibly emitted copies compiled
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with the CPU-specific instructions might be chosen by the linker as the copy
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to keep.
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Also see the note at the top of simdsupport.hxx .
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*/
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namespace cpuid {
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enum class InstructionSetFlags
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{
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NONE = 0x00,
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HYPER = 0x01,
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SSE2 = 0x02,
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SSSE3 = 0x04,
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SSE41 = 0x08,
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SSE42 = 0x10,
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AVX = 0x20,
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AVX2 = 0x40,
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AVX512F = 0x80
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};
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} // end cpuid
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namespace o3tl {
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template<> struct typed_flags<cpuid::InstructionSetFlags> : is_typed_flags<cpuid::InstructionSetFlags, 0x0ff> {};
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}
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namespace cpuid {
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/** Get supported instruction set flags determined at runtime by probing the CPU.
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*/
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TOOLS_DLLPUBLIC InstructionSetFlags getCpuInstructionSetFlags();
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/** Check if a certain instruction set is supported by the CPU at runtime.
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*/
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TOOLS_DLLPUBLIC bool isCpuInstructionSetSupported(InstructionSetFlags eInstructions);
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/** Returns a string of supported instructions.
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*/
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TOOLS_DLLPUBLIC OUString instructionSetSupportedString();
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/** Check if SSE2 is supported by the CPU
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*/
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inline bool hasSSE2()
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{
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return isCpuInstructionSetSupported(InstructionSetFlags::SSE2);
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}
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/** Check if SSSE3 is supported by the CPU
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*/
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inline bool hasSSSE3()
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{
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return isCpuInstructionSetSupported(InstructionSetFlags::SSSE3);
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}
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/** Check if AVX is supported by the CPU
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*/
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inline bool hasAVX()
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{
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return isCpuInstructionSetSupported(InstructionSetFlags::AVX);
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}
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/** Check if AVX2 is supported by the CPU
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*/
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inline bool hasAVX2()
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{
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return isCpuInstructionSetSupported(InstructionSetFlags::AVX2);
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}
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/** Check if AVX512F is supported by the CPU
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*/
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inline bool hasAVX512F()
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{
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return isCpuInstructionSetSupported(InstructionSetFlags::AVX512F);
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}
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/** Check if Hyper Threading is supported
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*/
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inline bool hasHyperThreading()
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{
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return isCpuInstructionSetSupported(InstructionSetFlags::HYPER);
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}
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} // end cpuid
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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