Allow disabling of SIMD for some cases

WohlSoft · Oct 31, 2023 · f859270 · f859270
1 parent 7f7c11f
commit f859270
Show file tree

Hide file tree

Showing 10 changed files with 51 additions and 0 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -63,6 +63,8 @@ else()
     set(ENABLE_FPIC OFF)
 endif()
 
+option(DISABLE_SIMD "Disable all SIMD optimizations as possible" OFF)
+
 # --- TODO: implement building or usage of pre-built libSDL here ---
 # set(SNDIO OFF) # Disable sndio that is not needed to us
 # add_subdirectory(libSDL2)

diff --git a/FluidLite/CMakeLists.txt b/FluidLite/CMakeLists.txt
@@ -11,6 +11,7 @@ include(TestBigEndian)
 
 set(CMAKE_C_STANDARD 99)
 
+set(AUDIO_CODECS_KEEP_SSE ON)
 include(${CMAKE_CURRENT_SOURCE_DIR}/../audio_codec_common.cmake)
 
 test_big_endian(WORDS_BIGENDIAN)

diff --git a/audio_codec_common.cmake b/audio_codec_common.cmake
@@ -36,6 +36,18 @@ macro(ac_disable_cxx_warning_flag WARNINGFLAG WARNING_VAR)
 endmacro()
 
 # Add compiler argument(s)
+macro(ac_add_opt_flag COMPILERFLAG COMPILERFLAG_VAR)
+    check_c_compiler_flag("${COMPILERFLAG}" HAVE_C_${COMPILERFLAG_VAR})
+    if(HAVE_C_${COMPILERFLAG_VAR})
+       set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${COMPILERFLAG}")
+    endif()
+
+    check_cxx_compiler_flag("${COMPILERFLAG}" HAVE_CXX_${COMPILERFLAG_VAR})
+    if(HAVE_CXX_${COMPILERFLAG_VAR})
+       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMPILERFLAG}")
+    endif()
+endmacro()
+
 macro(ac_add_c_compiler_flag COMPILERFLAG COMPILERFLAG_VAR)
     check_c_compiler_flag("${COMPILERFLAG}" HAVE_C_${COMPILERFLAG_VAR})
     if(HAVE_C_${COMPILERFLAG_VAR})
@@ -148,3 +160,17 @@ endif()
 if(WIN32)
     set(CMAKE_SHARED_LIBRARY_PREFIX "")
 endif()
+
+if(DISABLE_SIMD)
+    if(NOT AUDIO_CODECS_KEEP_SSE)
+        ac_add_opt_flag("-mno-sse" NO_SSE)
+    endif()
+    ac_add_opt_flag("-mno-sse2" NO_SSE2)
+    ac_add_opt_flag("-mno-sse3" NO_SSE3)
+    ac_add_opt_flag("-mno-ssse3" NO_SSSE3)
+    ac_add_opt_flag("-mno-sse4.1" NO_SSE41)
+    ac_add_opt_flag("-mno-sse4.2" NO_SSE42)
+    ac_add_opt_flag("-mno-avx" NO_AVX)
+    ac_add_opt_flag("-mno-avx2" NO_AVX2)
+    ac_add_opt_flag("-mno-avx512f" NO_AVX512F)
+endif()
diff --git a/download_sdl2_hg.cmake b/download_sdl2_hg.cmake
@@ -71,6 +71,21 @@ if(ANDROID)
     )
 endif()
 
+set(SDL2_CMAKE_NOSIMD_FLAGS)
+if(DISABLE_SIMD)
+    set(SDL2_CMAKE_NOSIMD_FLAGS
+        "-DSDL_SSEMATH=OFF"
+        "-DSDL_SSE=OFF"
+        "-DSDL_SSE2=OFF"
+        "-DSDL_SSE3=OFF"
+        "-DSDL_MMX=OFF"
+        "-DSDL_3DNOW=OFF"
+        "-DSDL_ALTIVEC=OFF"
+        "-DSDL_ARMSIMD=OFF"
+        "-DSDL_ARMNEON=OFF"
+    )
+endif()
+
 if(USE_USE_NDK_MAKE)
     if(CMAKE_BUILD_TYPE_LOWER STREQUAL "debug")
         set(SDL2_DEBUG_SUFFIX "d")
@@ -135,6 +150,7 @@ elseif(USE_LOCAL_SDL2)
             -DCMAKE_DEBUG_POSTFIX=${CMAKE_DEBUG_POSTFIX}
             ${SDL2_CMAKE_FPIC_FLAG}
             ${SDL2_WASAPI_FLAG}
+            ${SDL2_CMAKE_NOSIMD_FLAGS}
             ${APPLE_FLAGS}
             ${ANDROID_FLAGS}
             ${EMSCRIPTEN_FLAGS}

diff --git a/libFLAC/CMakeLists.txt b/libFLAC/CMakeLists.txt
@@ -4,6 +4,7 @@ project(libFLAC VERSION 1.3.4 LANGUAGES C)
 include(CheckIncludeFiles)
 include(CheckFunctionExists)
 include(TestBigEndian)
+set(AUDIO_CODECS_KEEP_SSE ON)
 include(${CMAKE_CURRENT_SOURCE_DIR}/../audio_codec_common.cmake)
 
 TEST_BIG_ENDIAN(WORDS_BIGENDIAN)

diff --git a/libgme/CMakeLists.txt b/libgme/CMakeLists.txt
@@ -1,6 +1,7 @@
 cmake_minimum_required(VERSION 3.2...3.5)
 project(libGME VERSION 0.6.2 LANGUAGES CXX)
 
+set(AUDIO_CODECS_KEEP_SSE ON)
 include(${CMAKE_CURRENT_SOURCE_DIR}/../audio_codec_common.cmake)
 include(TestBigEndian)
 

diff --git a/libmodplug/CMakeLists.txt b/libmodplug/CMakeLists.txt
@@ -45,6 +45,7 @@ include(CheckIncludeFile)
 include(CheckCCompilerFlag)
 include(CheckCSourceCompiles)
 include(TestBigEndian)
+set(AUDIO_CODECS_KEEP_SSE ON)
 include(${CMAKE_CURRENT_SOURCE_DIR}/../audio_codec_common.cmake)
 
 TEST_BIG_ENDIAN(WORDS_BIGENDIAN)

diff --git a/libopus/CMakeLists.txt b/libopus/CMakeLists.txt
@@ -9,6 +9,7 @@ include(CheckIncludeFile)
 include(CheckIncludeFiles)
 include(CheckLibraryExists)
 
+set(AUDIO_CODECS_KEEP_SSE ON)
 include(${CMAKE_CURRENT_SOURCE_DIR}/../audio_codec_common.cmake)
 
 if(NOT MSVC)

diff --git a/libtimidity-sdl/CMakeLists.txt b/libtimidity-sdl/CMakeLists.txt
@@ -1,6 +1,7 @@
 cmake_minimum_required(VERSION 3.2...3.5)
 project(libTimiditySDL VERSION 0.2 LANGUAGES C)
 
+set(AUDIO_CODECS_KEEP_SSE ON)
 include(${CMAKE_CURRENT_SOURCE_DIR}/../audio_codec_common.cmake)
 
 # Turn on warnings and legacy C/C++ standards to support more compilers

diff --git a/libvorbis/CMakeLists.txt b/libvorbis/CMakeLists.txt
@@ -5,6 +5,7 @@ include(CheckIncludeFile)
 
 set(CMAKE_C_STANDARD 99)
 
+set(AUDIO_CODECS_KEEP_SSE ON)
 include(${CMAKE_CURRENT_SOURCE_DIR}/../audio_codec_common.cmake)
 
 add_definitions(