mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-12-26 18:54:29 +01:00
72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
// Copyright 2015 Dolphin Emulator Project
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#pragma once
|
|
|
|
#if defined(_M_X86_64)
|
|
|
|
/**
|
|
* It is assumed that all compilers used to build Dolphin support intrinsics up to and including
|
|
* SSE 4.2 on x86/x64.
|
|
*/
|
|
|
|
#if defined(__GNUC__) || defined(__clang__)
|
|
|
|
/**
|
|
* Due to limitations in GCC, SSE intrinsics are only available when compiling with the
|
|
* corresponding instruction set enabled. However, using the target attribute, we can compile
|
|
* single functions with a different target instruction set, while still creating a generic build.
|
|
*
|
|
* Since this instruction set is enabled per-function, any callers should verify that the
|
|
* instruction set is supported at runtime before calling it, and provide a fallback implementation
|
|
* when not supported.
|
|
*
|
|
* When building with -march=native, or enabling the instruction sets in the compile flags, permit
|
|
* usage of the instrinsics without any function attributes. If the command-line architecture does
|
|
* not support this instruction set, enable it via function targeting.
|
|
*/
|
|
|
|
#include <x86intrin.h>
|
|
#ifndef __SSE4_2__
|
|
#define FUNCTION_TARGET_SSE42 [[gnu::target("sse4.2")]]
|
|
#endif
|
|
#ifndef __SSE4_1__
|
|
#define FUNCTION_TARGET_SSR41 [[gnu::target("sse4.1")]]
|
|
#endif
|
|
#ifndef __SSSE3__
|
|
#define FUNCTION_TARGET_SSSE3 [[gnu::target("ssse3")]]
|
|
#endif
|
|
#ifndef __SSE3__
|
|
#define FUNCTION_TARGET_SSE3 [[gnu::target("sse3")]]
|
|
#endif
|
|
|
|
#elif defined(_MSC_VER) || defined(__INTEL_COMPILER)
|
|
|
|
/**
|
|
* MSVC and ICC support intrinsics for any instruction set without any function attributes.
|
|
*/
|
|
#include <intrin.h>
|
|
|
|
#endif // defined(_MSC_VER) || defined(__INTEL_COMPILER)
|
|
|
|
#endif // _M_X86_64
|
|
|
|
/**
|
|
* Define the FUNCTION_TARGET macros to nothing if they are not needed, or not on an X86 platform.
|
|
* This way when a function is defined with FUNCTION_TARGET you don't need to define a second
|
|
* version without the macro around a #ifdef guard. Be careful when using intrinsics, as all use
|
|
* should still be placed around a #ifdef _M_X86_64 if the file is compiled on all architectures.
|
|
*/
|
|
#ifndef FUNCTION_TARGET_SSE42
|
|
#define FUNCTION_TARGET_SSE42
|
|
#endif
|
|
#ifndef FUNCTION_TARGET_SSR41
|
|
#define FUNCTION_TARGET_SSR41
|
|
#endif
|
|
#ifndef FUNCTION_TARGET_SSSE3
|
|
#define FUNCTION_TARGET_SSSE3
|
|
#endif
|
|
#ifndef FUNCTION_TARGET_SSE3
|
|
#define FUNCTION_TARGET_SSE3
|
|
#endif
|