forked from bartvdbraak/blender
Cycles: enable /arch:AVX in msvc 11 and later versions for avx kernel
This enables VEX-encoding in AVX kernel for windows msvc builds and gives 5-10% speedup for different scenes. Reviewers: juicyfruit, dingto, brecht Reviewed By: brecht CC: brecht Differential Revision: https://developer.blender.org/D284
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@ -15,17 +15,24 @@ include(cmake/external_libs.cmake)
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# todo: refactor this code to match scons
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if(WIN32 AND MSVC)
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# /arch:AVX for VC2012 and above
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if(NOT MSVC_VERSION LESS 1700)
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set(CYCLES_AVX_ARCH_FLAGS "/arch:AVX")
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elseif(NOT CMAKE_CL_64)
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set(CYCLES_AVX_ARCH_FLAGS "/arch:SSE2")
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endif()
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# there is no /arch:SSE3, but intrinsics are available anyway
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if(CMAKE_CL_64)
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set(CYCLES_SSE2_KERNEL_FLAGS "/fp:fast -D_CRT_SECURE_NO_WARNINGS /Gs-")
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set(CYCLES_SSE3_KERNEL_FLAGS "/fp:fast -D_CRT_SECURE_NO_WARNINGS /Gs-")
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set(CYCLES_SSE41_KERNEL_FLAGS "/fp:fast -D_CRT_SECURE_NO_WARNINGS /Gs-")
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set(CYCLES_AVX_KERNEL_FLAGS "/fp:fast -D_CRT_SECURE_NO_WARNINGS /Gs-") #/arch:AVX for VC2012 and above
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set(CYCLES_AVX_KERNEL_FLAGS "${CYCLES_AVX_ARCH_FLAGS} /fp:fast -D_CRT_SECURE_NO_WARNINGS /Gs-")
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else()
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set(CYCLES_SSE2_KERNEL_FLAGS "/arch:SSE2 /fp:fast -D_CRT_SECURE_NO_WARNINGS /Gs-")
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set(CYCLES_SSE3_KERNEL_FLAGS "/arch:SSE2 /fp:fast -D_CRT_SECURE_NO_WARNINGS /Gs-")
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set(CYCLES_SSE41_KERNEL_FLAGS "/arch:SSE2 /fp:fast -D_CRT_SECURE_NO_WARNINGS /Gs-")
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set(CYCLES_AVX_KERNEL_FLAGS "/arch:SSE2 /fp:fast -D_CRT_SECURE_NO_WARNINGS /Gs-") #/arch:AVX for VC2012 and above
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set(CYCLES_AVX_KERNEL_FLAGS "${CYCLES_AVX_ARCH_FLAGS} /fp:fast -D_CRT_SECURE_NO_WARNINGS /Gs-")
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endif()
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /fp:fast -D_CRT_SECURE_NO_WARNINGS /Gs-")
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