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Automatically use SSE registers for FP operations on i386 (#83)

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William L. DeRieux IV 2021-12-11 06:43:23 -05:00 committed by sfan5
parent 6d133e1bcc
commit 4bdecbc6b7
1 changed files with 18 additions and 0 deletions
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18
source/Irrlicht/CMakeLists.txt
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@ -18,10 +18,28 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "^(GNU|Clang|AppleClang)$")
set(CMAKE_CXX_FLAGS_DEBUG "-g")
add_compile_options(-Wall -pipe -fno-exceptions -fno-rtti)
# Enable SSE for floating point math on 32-bit x86 by default
# reasoning see minetest issue #11810 and https://gcc.gnu.org/wiki/FloatingPointMath
if(CMAKE_SIZEOF_VOID_P EQUAL 4)
include(CheckCXXSourceCompiles)
check_cxx_source_compiles("#ifndef __i686__\n#error\n#endif\nint main(){}" IS_I686)
if(IS_I686)
message(STATUS "Detected Intel x86: using SSE instead of x87 FPU")
add_compile_options(-mfpmath=sse -msse)
endif()
endif()
elseif(MSVC)
string(APPEND CMAKE_CXX_STANDARD_LIBRARIES " msvcrt.lib") # ???? fuck off
add_compile_options(/GR- /Zl)
# Enable SSE for floating point math on 32-bit x86 by default
# reasoning see minetest issue #11810 and https://gcc.gnu.org/wiki/FloatingPointMath
if(CMAKE_SIZEOF_VOID_P EQUAL 4)
add_compile_options(/arch:SSE)
endif()
endif()
# Required libs