Commit: 81eee0f536763f6ee660bfc8f359bc7853d3161c
Author: Sergey Sharybin
Date: Mon Feb 13 16:25:35 2017 +0100
Branches: master
https://developer.blender.org/rB81eee0f536763f6ee660bfc8f359bc7853d3161c
Cycles: Use fast math without finite optimization
This allows us to use faster math and still have reliable
isnan/isfinite tests.
Only do it for host side, kernels stays unchanged.
Thanks Lukas Stockner for the tip!
===================================================================
M intern/cycles/CMakeLists.txt
===================================================================
diff --git a/intern/cycles/CMakeLists.txt b/intern/cycles/CMakeLists.txt
index 79c1c3e3e8..31fa15a204 100644
--- a/intern/cycles/CMakeLists.txt
+++ b/intern/cycles/CMakeLists.txt
@@ -74,6 +74,7 @@ elseif(CMAKE_COMPILER_IS_GNUCC)
if(CXX_HAS_AVX2)
set(CYCLES_AVX2_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3
-mssse3 -msse4.1 -mavx -mavx2 -mfma -mlzcnt -mbmi -mbmi2 -mf16c -mfpmath=sse")
endif()
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffast-math
-fno-finite-math-only")
elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
check_cxx_compiler_flag(-msse CXX_HAS_SSE)
check_cxx_compiler_flag(-mavx CXX_HAS_AVX)
@@ -89,6 +90,7 @@ elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
if(CXX_HAS_AVX2)
set(CYCLES_AVX2_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3
-mssse3 -msse4.1 -mavx -mavx2 -mfma -mlzcnt -mbmi -mbmi2 -mf16c")
endif()
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffast-math
-fno-finite-math-only")
endif()
if(CXX_HAS_SSE)
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