mirror of https://github.com/wb2osz/direwolf.git
385 lines
18 KiB
CMake
385 lines
18 KiB
CMake
# Clang or AppleClang (see CMP0025)
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if(NOT DEFINED C_CLANG AND CMAKE_CXX_COMPILER_ID MATCHES "Clang")
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set(C_CLANG 1)
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elseif(NOT DEFINED C_GCC AND CMAKE_CXX_COMPILER_ID MATCHES "GNU")
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set(C_GCC 1)
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elseif(NOT DEFINED C_MSVC AND CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
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set(C_MSVC 1)
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endif()
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# Detect current compilation architecture and create standard definitions
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include(CheckSymbolExists)
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function(detect_architecture symbol arch)
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if (NOT DEFINED ARCHITECTURE)
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set(CMAKE_REQUIRED_QUIET 1)
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check_symbol_exists("${symbol}" "" ARCHITECTURE_${arch})
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unset(CMAKE_REQUIRED_QUIET)
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# The output variable needs to be unique across invocations otherwise
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# CMake's crazy scope rules will keep it defined
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if (ARCHITECTURE_${arch})
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set(ARCHITECTURE "${arch}" PARENT_SCOPE)
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set(ARCHITECTURE_${arch} 1 PARENT_SCOPE)
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add_definitions(-DARCHITECTURE_${arch}=1)
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endif()
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endif()
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endfunction()
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# direwolf versions thru 1.5 were available pre-built for 32 bit Windows targets.
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# Research and experimentation revealed that the SSE instructions made a big
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# difference in runtime speed but SSE2 and later were not significantly better
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# for this application. I decided to build with only the SSE instructions making
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# the Pentium 3 the minimum requirement. SSE2 would require at least a Pentium 4
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# and offered no significant performance advantage.
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# These are ancient history - from the previous Century - but old computers, generally
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# considered useless for anything else, often end up in the ham shack.
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#
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# When cmake was first used for direwolf, the default target became 64 bit and the
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# SSE2, SSE3, SSE4.1, and SSE4.2 instructions were automatically enabled based on the
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# build machine capabilities. This was fine until I tried running the application
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# on a computer much older than where it was built. It did not have the SSE4 instructions
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# and the application died without a clue for the reason.
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# Just how much benefit do these new instructions provide for this application?
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#
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# These were all run on the same computer, but compiled in different ways.
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# Times to run atest with Track 1 of the TNC test CD:
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#
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# direwolf 1.5 - 32 bit target - gcc 6.3.0
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#
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# 60.4 sec. Pentium 3 with SSE
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#
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# direwolf 1.6 - 32 bit target - gcc 7.4.0
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#
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# 81.0 sec. with no SIMD instructions enabled.
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# 54.4 sec. with SSE
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# 52.0 sec. with SSE2
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# 52.4 sec. with SSE2, SSE3
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# 52.3 sec. with SSE2, SSE3, SSE4.1, SSE4.2
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# 49.9 sec. Fedora standard: -m32 -march=i686 -mtune=generic -msse2 -mfpmath=sse
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# 50.4 sec. sse not sse2: -m32 -march=i686 -mtune=generic -msse -mfpmath=sse
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#
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# That's what I found several years ago with a much older compiler.
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# The original SSE helped a lot but SSE2 and later made little difference.
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#
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# direwolf 1.6 - 64 bit target - gcc 7.4.0
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#
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# 34.8 sec. with no SIMD instructions enabled.
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# 34.8 sec. with SSE
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# 34.8 sec. with SSE2
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# 34.2 sec. with SSE2, SSE3
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# 33.5 sec. with SSE2, SSE3, SSE4.1, SSE4.2
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# 33.4 Fedora standard: -mtune=generic
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#
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# Why do we see such little variation? 64-bit target implies
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# SSE, SSE2, SSE3 instructions are available.
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#
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# Building for a 64 bit target makes it run about 1.5x faster on the same hardware.
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#
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# The default will be set for maximum portability so packagers won't need to
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# to anything special.
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#
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set(FORCE_SSE 1)
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#
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# While ENABLE_GENERIC also had the desired result (for x86_64), I don't think
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# it is the right approach. It prevents the detection of the architecture,
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# i.e. x86, x86_64, ARM, ARM64. That's why it did not go looking for the various
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# SSE instructions. For x86, we would miss out on using SSE.
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if (NOT ENABLE_GENERIC)
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if (C_MSVC)
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detect_architecture("_M_AMD64" x86_64)
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detect_architecture("_M_IX86" x86)
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detect_architecture("_M_ARM" ARM)
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detect_architecture("_M_ARM64" ARM64)
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else()
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detect_architecture("__x86_64__" x86_64)
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detect_architecture("__i386__" x86)
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detect_architecture("__arm__" ARM)
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detect_architecture("__aarch64__" ARM64)
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endif()
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endif()
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if (NOT DEFINED ARCHITECTURE)
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set(ARCHITECTURE "GENERIC")
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set(ARCHITECTURE_GENERIC 1)
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add_definitions(-DARCHITECTURE_GENERIC=1)
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endif()
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message(STATUS "Target architecture: ${ARCHITECTURE}")
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set(TEST_DIR ${PROJECT_SOURCE_DIR}/cmake/cpu_tests)
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# flag that set the minimum cpu flag requirements
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# used to create re-distribuitable binary
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if (${ARCHITECTURE} MATCHES "x86_64|x86" AND (FORCE_SSE OR FORCE_SSSE3 OR FORCE_SSE41))
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if (FORCE_SSE)
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set(HAS_SSE ON CACHE BOOL "SSE SIMD enabled")
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if(C_GCC OR C_CLANG)
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if (${ARCHITECTURE} MATCHES "x86_64")
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# All 64-bit capable chips support MMX, SSE, SSE2, and SSE3
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# so they are all enabled automatically. We don't want to use
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# SSE4, based on build machine capabilites, because the application
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# would not run properly on an older CPU.
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mtune=generic" )
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mtune=generic" )
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else()
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# Fedora standard uses -msse2 here.
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# I dropped it down to -msse for greater compatibility and little penalty.
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32 -march=i686 -mtune=generic -msse -mfpmath=sse" )
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32 -march=i686 -mtune=generic -msse -mfpmath=sse" )
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endif()
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message(STATUS "Use SSE SIMD instructions")
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add_definitions(-DUSE_SSE)
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elseif(C_MSVC)
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set( CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /arch:SSE" )
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set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /arch:SSE" )
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set( CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG" )
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message(STATUS "Use MSVC SSSE3 SIMD instructions")
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add_definitions (/D "_CRT_SECURE_NO_WARNINGS")
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add_definitions(-DUSE_SSSE3)
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endif()
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elseif (FORCE_SSSE3)
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set(HAS_SSSE3 ON CACHE BOOL "SSSE3 SIMD enabled")
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if(C_GCC OR C_CLANG)
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mssse3" )
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mssse3" )
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message(STATUS "Use SSSE3 SIMD instructions")
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add_definitions(-DUSE_SSSE3)
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elseif(C_MSVC)
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set( CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /arch:SSSE3" )
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set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /arch:SSSE3" )
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set( CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG" )
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message(STATUS "Use MSVC SSSE3 SIMD instructions")
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add_definitions (/D "_CRT_SECURE_NO_WARNINGS")
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add_definitions(-DUSE_SSSE3)
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endif()
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elseif (FORCE_SSE41)
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set(HAS_SSSE3 ON CACHE BOOL "SSSE3 SIMD enabled")
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set(HAS_SSE4_1 ON CACHE BOOL "Architecture has SSE 4.1 SIMD enabled")
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if(C_GCC OR C_CLANG)
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse4.1" )
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.1" )
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message(STATUS "Use SSE 4.1 SIMD instructions")
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add_definitions(-DUSE_SSSE3)
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add_definitions(-DUSE_SSE4_1)
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elseif(C_MSVC)
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# seems that from MSVC 2015 comiler doesn't support those flags
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set( CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /arch:SSE4_1" )
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set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /arch:SSE4_1" )
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set( CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG" )
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message(STATUS "Use SSE 4.1 SIMD instructions")
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add_definitions (/D "_CRT_SECURE_NO_WARNINGS")
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add_definitions(-DUSE_SSSE3)
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add_definitions(-DUSE_SSE4_1)
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endif()
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endif()
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else ()
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if (${ARCHITECTURE} MATCHES "x86_64|x86")
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if(C_MSVC)
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try_run(RUN_SSE2 COMPILE_SSE2 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_sse2.cxx" COMPILE_DEFINITIONS /O0)
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else()
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try_run(RUN_SSE2 COMPILE_SSE2 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_sse2.cxx" COMPILE_DEFINITIONS -msse2 -O0)
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endif()
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if(COMPILE_SSE2 AND RUN_SSE2 EQUAL 0)
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set(HAS_SSE2 ON CACHE BOOL "Architecture has SSSE2 SIMD enabled")
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message(STATUS "Use SSE2 SIMD instructions")
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if(C_GCC OR C_CLANG)
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse2" )
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse2" )
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add_definitions(-DUSE_SSE2)
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elseif(C_MSVC)
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set( CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /arch:SSE2" )
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set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /arch:SSE2" )
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set( CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Oi /GL /Ot /Ox /arch:SSE2" )
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set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox /arch:SSE2" )
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set( CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG" )
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add_definitions (/D "_CRT_SECURE_NO_WARNINGS")
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add_definitions(-DUSE_SSE2)
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endif()
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else()
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set(HAS_SSE2 OFF CACHE BOOL "Architecture does not have SSSE2 SIMD enabled")
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endif()
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if(C_MSVC)
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try_run(RUN_SSSE3 COMPILE_SSSE3 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_ssse3.cxx" COMPILE_DEFINITIONS /O0)
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else()
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try_run(RUN_SSSE3 COMPILE_SSSE3 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_ssse3.cxx" COMPILE_DEFINITIONS -mssse3 -O0)
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endif()
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if(COMPILE_SSSE3 AND RUN_SSSE3 EQUAL 0)
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set(HAS_SSSE3 ON CACHE BOOL "Architecture has SSSE3 SIMD enabled")
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message(STATUS "Use SSSE3 SIMD instructions")
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if(C_GCC OR C_CLANG)
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mssse3" )
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mssse3" )
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add_definitions(-DUSE_SSSE3)
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elseif(C_MSVC)
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# seems not present on MSVC 2017
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#set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox /arch:SSSE3" )
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set( CMAKE_C_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG" )
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add_definitions (/D "_CRT_SECURE_NO_WARNINGS")
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add_definitions(-DUSE_SSSE3)
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endif()
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else()
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set(HAS_SSSE3 OFF CACHE BOOL "Architecture does not have SSSE3 SIMD enabled")
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endif()
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if(C_MSVC)
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try_run(RUN_SSE4_1 COMPILE_SSE4_1 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_sse41.cxx" COMPILE_DEFINITIONS /O0)
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else()
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try_run(RUN_SSE4_1 COMPILE_SSE4_1 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_sse41.cxx" COMPILE_DEFINITIONS -msse4.1 -O0)
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endif()
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if(COMPILE_SSE4_1 AND RUN_SSE4_1 EQUAL 0)
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set(HAS_SSE4_1 ON CACHE BOOL "Architecture has SSE 4.1 SIMD enabled")
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message(STATUS "Use SSE 4.1 SIMD instructions")
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if(C_GCC OR C_CLANG)
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse4.1" )
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.1" )
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add_definitions(-DUSE_SSE4_1)
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elseif(C_MSVC)
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# seems not present on MSVC 2017
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#set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /arch:SSE4_1" )
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#set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox /arch:SSE4_1" )
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set( CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG" )
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add_definitions (/D "_CRT_SECURE_NO_WARNINGS")
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add_definitions(-DUSE_SSE4_1)
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endif()
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else()
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set(HAS_SSE4_1 OFF CACHE BOOL "Architecture does not have SSE 4.1 SIMD enabled")
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endif()
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if(C_MSVC)
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try_run(RUN_SSE4_2 COMPILE_SSE4_2 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_sse42.cxx" COMPILE_DEFINITIONS /O0)
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else()
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try_run(RUN_SSE4_2 COMPILE_SSE4_2 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_sse42.cxx" COMPILE_DEFINITIONS -msse4.2 -O0)
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endif()
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if(COMPILE_SSE4_2 AND RUN_SSE4_2 EQUAL 0)
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set(HAS_SSE4_2 ON CACHE BOOL "Architecture has SSE 4.2 SIMD enabled")
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message(STATUS "Use SSE 4.2 SIMD instructions")
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if(C_GCC OR C_CLANG)
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse4.2" )
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.2" )
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add_definitions(-DUSE_SSE4_2)
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elseif(C_MSVC)
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# seems not present on MSVC 2017
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#set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /arch:SSE4_2" )
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#set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox /arch:SSE4_2" )
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set( CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Oi /GL /Ot /Ox" )
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set( CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG" )
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add_definitions (/D "_CRT_SECURE_NO_WARNINGS")
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add_definitions(-DUSE_SSE4_2)
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endif()
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else()
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set(HAS_SSE4_2 OFF CACHE BOOL "Architecture does not have SSE 4.2 SIMD enabled")
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endif()
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if(C_MSVC)
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try_run(RUN_AVX COMPILE_AVX "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_avx.cxx" COMPILE_DEFINITIONS /O0)
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else()
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try_run(RUN_AVX COMPILE_AVX "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_avx.cxx" COMPILE_DEFINITIONS -mavx -O0)
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endif()
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if(COMPILE_AVX AND RUN_AVX EQUAL 0)
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set(HAS_AVX ON CACHE BOOL "Architecture has AVX SIMD enabled")
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message(STATUS "Use AVX SIMD instructions")
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if(C_GCC OR C_CLANG)
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mavx" )
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx" )
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add_definitions(-DUSE_AVX)
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elseif(C_MSVC)
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set( CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /arch:AVX" )
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set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /arch:AVX" )
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set( CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Oi /GL /Ot /Ox /arch:AVX" )
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set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox /arch:AVX" )
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set( CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG" )
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add_definitions (/D "_CRT_SECURE_NO_WARNINGS")
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add_definitions(-DUSE_AVX)
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endif()
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else()
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set(HAS_AVX OFF CACHE BOOL "Architecture does not have AVX SIMD enabled")
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endif()
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if(C_MSVC)
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try_run(RUN_AVX2 COMPILE_AVX2 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_avx2.cxx" COMPILE_DEFINITIONS /O0)
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else()
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try_run(RUN_AVX2 COMPILE_AVX2 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_avx2.cxx" COMPILE_DEFINITIONS -mavx2 -O0)
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endif()
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if(COMPILE_AVX2 AND RUN_AVX2 EQUAL 0)
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set(HAS_AVX2 ON CACHE BOOL "Architecture has AVX2 SIMD enabled")
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message(STATUS "Use AVX2 SIMD instructions")
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if(C_GCC OR C_CLANG)
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mavx2" )
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx2" )
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add_definitions(-DUSE_AVX2)
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elseif(C_MSVC)
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set( CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /arch:AVX2" )
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set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /arch:AVX2" )
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set( CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Oi /GL /Ot /Ox /arch:AVX2" )
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set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox /arch:AVX2" )
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set( CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG" )
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add_definitions (/D "_CRT_SECURE_NO_WARNINGS")
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add_definitions(-DUSE_AVX2)
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endif()
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else()
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set(HAS_AVX2 OFF CACHE BOOL "Architecture does not have AVX2 SIMD enabled")
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endif()
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if(C_MSVC)
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try_run(RUN_AVX512 COMPILE_AVX512 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_avx512.cxx" COMPILE_DEFINITIONS /O0)
|
|
else()
|
|
try_run(RUN_AVX512 COMPILE_AVX512 "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_x86_avx512.cxx" COMPILE_DEFINITIONS -mavx512f -O0)
|
|
endif()
|
|
if(COMPILE_AVX512 AND RUN_AVX512 EQUAL 0)
|
|
set(HAS_AVX512 ON CACHE BOOL "Architecture has AVX512 SIMD enabled")
|
|
message(STATUS "Use AVX512 SIMD instructions")
|
|
if(C_GCC OR C_CLANG)
|
|
set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mavx512f" )
|
|
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx512f" )
|
|
add_definitions(-DUSE_AVX512)
|
|
elseif(C_MSVC)
|
|
set( CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /arch:AVX512" )
|
|
set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /arch:AVX512" )
|
|
set( CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Oi /GL /Ot /Ox /arch:AVX512" )
|
|
set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi /GL /Ot /Ox /arch:AVX512" )
|
|
set( CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG" )
|
|
add_definitions (/D "_CRT_SECURE_NO_WARNINGS")
|
|
add_definitions(-DUSE_AVX512)
|
|
endif()
|
|
else()
|
|
set(HAS_AVX512 OFF CACHE BOOL "Architecture does not have AVX512 SIMD enabled")
|
|
endif()
|
|
elseif(ARCHITECTURE_ARM)
|
|
if(C_MSVC)
|
|
try_run(RUN_NEON COMPILE_NEON "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_arm_neon.cxx" COMPILE_DEFINITIONS /O0)
|
|
else()
|
|
if(${CMAKE_HOST_SYSTEM_PROCESSOR} STREQUAL ${CMAKE_SYSTEM_PROCESSOR})
|
|
try_run(RUN_NEON COMPILE_NEON "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_arm_neon.cxx" COMPILE_DEFINITIONS -mfpu=neon -O0)
|
|
else()
|
|
try_compile(COMPILE_NEON "${CMAKE_BINARY_DIR}/tmp" "${TEST_DIR}/test_arm_neon.cxx" COMPILE_DEFINITIONS -mfpu=neon -O0)
|
|
set(RUN_NEON 0)
|
|
endif()
|
|
endif()
|
|
if(COMPILE_NEON AND RUN_NEON EQUAL 0)
|
|
set(HAS_NEON ON CACHE BOOL "Architecture has NEON SIMD enabled")
|
|
message(STATUS "Use NEON SIMD instructions")
|
|
if(C_GCC OR C_CLANG)
|
|
set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpu=neon" )
|
|
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=neon" )
|
|
add_definitions(-DUSE_NEON)
|
|
endif()
|
|
else()
|
|
set(HAS_NEON OFF CACHE BOOL "Architecture does not have NEON SIMD enabled")
|
|
endif()
|
|
elseif(ARCHITECTURE_ARM64)
|
|
# Advanced SIMD (aka NEON) is mandatory for AArch64
|
|
set(HAS_NEON ON CACHE BOOL "Architecture has NEON SIMD enabled")
|
|
message(STATUS "Use NEON SIMD instructions")
|
|
add_definitions(-DUSE_NEON)
|
|
endif()
|
|
endif()
|
|
|
|
# clear binary test folder
|
|
FILE(REMOVE_RECURSE ${CMAKE_BINARY_DIR}/tmp)
|