FGFS-4.1/simgear
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Split up SIMD support in ENABLE_SIMD which enables sse2 support for the compiler and ENABLE_SIMD_CODE which enables the hand crafted SIMD math functions which defaults to OFF now since compilers have catched up on generating optimized vectorized SIMD code.

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Erik Hofman
2019-01-15 10:36:23 +01:00
parent 61f322f201
commit ef1cbae22b
4 changed files with 15 additions and 9 deletions
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15
CMakeLists.txt
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@@ -125,9 +125,14 @@ option(ENABLE_SOUND "Set to OFF to disable building SimGear's sound support"
option(USE_AEONWAVE "Set to ON to use AeonWave instead of OpenAL" ON)
option(ENABLE_PKGUTIL "Set to ON to build the sg_pkgutil application (default)" ON)
option(ENABLE_DNS "Set to ON to use udns library and DNS service resolver" ON)
option(ENABLE_SIMD "Enable SSE/SSE2 support for x86 compilers" ON)
option(ENABLE_SIMD "Enable SSE/SSE2 support for compilers" ON)
option(ENABLE_SIMD_CODE "Enable SSE/SSE2 support code for compilers" OFF)
option(ENABLE_OPENMP "Enable OpenMP compiler support" OFF)
if (NOT ENABLE_SIMD AND ENABLE_SIMD_CODE)
set(ENABLE_SIMD_CODE OFF)
endif()
include (DetectArch)
# until the fstream fix is applied and generally available in OSG,
@@ -412,8 +417,8 @@ if(CMAKE_COMPILER_IS_GNUCXX)
"${CMAKE_CXX_FLAGS} -O0 -fno-omit-frame-pointer -fno-inline")
elseif (ENABLE_SIMD)
if (X86 OR X86_64)
set(CMAKE_C_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
set(CMAKE_CXX_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
set(CMAKE_C_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse -ftree-vectorize -ftree-slp-vectorize")
set(CMAKE_CXX_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse -ftree-vectorize -ftree-slp-vectorize")
endif()
endif()
@@ -440,8 +445,8 @@ if (CLANG)
"${CMAKE_CXX_FLAGS} -O0 -fno-omit-frame-pointer -fno-inline-functions")
elseif (ENABLE_SIMD)
if (X86 OR X86_64)
set(CMAKE_C_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
set(CMAKE_CXX_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
set(CMAKE_C_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse -ftree-vectorize -ftree-slp-vectorize")
set(CMAKE_CXX_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse -ftree-vectorize -ftree-slp-vectorize")
endif()
endif()
endif()