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cmake: Detect AVX + allow build system to disable Intel intrinsics

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This commit is contained in:
Anonymous Maarten
2023-02-25 00:21:15 +01:00
committed by Anonymous Maarten
parent 683411e96f
commit 4681240241
16 changed files with 175 additions and 116 deletions
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72
CMakeLists.txt
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@@ -367,6 +367,7 @@ option_string(SDL_ASSERTIONS "Enable internal sanity checks (auto/disabled/relea
#set_option(SDL_DEPENDENCY_TRACKING "Use gcc -MMD -MT dependency tracking" ON)
set_option(SDL_ASSEMBLY "Enable assembly routines" ${SDL_ASSEMBLY_DEFAULT})
dep_option(SDL_SSEMATH "Allow GCC to use SSE floating point math" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_AVX "Use AVX assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_SSE "Use SSE assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_SSE2 "Use SSE2 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
dep_option(SDL_SSE3 "Use SSE3 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
@@ -711,6 +712,32 @@ if(SDL_ASSEMBLY)
# TODO: Those all seem to be quite GCC specific - needs to be
# reworked for better compiler support
set(HAVE_ASSEMBLY TRUE)
if(SDL_AVX)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mavx")
check_c_source_compiles("
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <immintrin.h>
#endif
#else
#include <immintrin.h>
#endif
#ifndef __AVX__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" CPU_SUPPORTS_AVX)
cmake_pop_check_state()
if(CPU_SUPPORTS_AVX)
set(HAVE_AVX TRUE)
target_compile_options(sdl-build-options INTERFACE "-mavx")
endif()
endif()
if(SDL_MMX)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mmmx")
@@ -728,9 +755,10 @@ if(SDL_ASSEMBLY)
#ifndef __MMX__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" HAVE_MMX)
int main(int argc, char **argv) { return 0; }" CPU_SUPPORTS_MMX)
cmake_pop_check_state()
if(HAVE_MMX)
if(CPU_SUPPORTS_MMX)
set(HAVE_MMX TRUE)
target_compile_options(sdl-build-options INTERFACE "-mmmx")
endif()
endif()
@@ -823,8 +851,6 @@ if(SDL_ASSEMBLY)
set(HAVE_SSEMATH TRUE)
endif()
check_include_file("immintrin.h" HAVE_IMMINTRIN_H)
if(SDL_ALTIVEC)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -maltivec")
@@ -954,10 +980,46 @@ if(SDL_ASSEMBLY)
if(SDL_SSE3)
set(HAVE_SSE3 TRUE)
endif()
check_include_file("immintrin.h" HAVE_IMMINTRIN_H)
if(SDL_AVX)
cmake_push_check_state()
# FIXME: should be CMAKE_REQUIRED_LINK_OPTIONS for CMake 3.14+
list(APPEND CMAKE_REQUIRED_LIBRARIES "/ARCH:AVX")
check_c_source_compiles("
#include <immintrin.h>
#ifndef __AVX__
#error Assembler CPP flag not enabled
#endif
int main(int argc, char **argv) { return 0; }" CPU_SUPPORTS_AVX)
cmake_pop_check_state()
if(CPU_SUPPORTS_AVX)
# FIXME: should be target_link_options for CMake 3.13+
target_link_libraries(sdl-build-options INTERFACE "/ARCH:AVX")
set(HAVE_AVX TRUE)
endif()
endif()
endif()
endif()
if(NOT HAVE_AVX)
set(SDL_DISABLE_AVX 1)
endif()
if(NOT HAVE_MMX)
set(SDL_DISABLE_MMX 1)
endif()
if(NOT HAVE_SSE)
set(SDL_DISABLE_SSE 1)
endif()
if(NOT HAVE_SSE2)
set(SDL_DISABLE_SSE2 1)
endif()
if(NOT HAVE_SSE3)
set(SDL_DISABLE_SSE3 1)
endif()
# TODO: Can't deactivate on FreeBSD? w/o LIBC, SDL_stdinc.h can't define
# anything.
if(SDL_LIBC)