cmake HAVE_VISUAL_STUDIO_ARCH_AVX2 examples

google/snappy CMakeLists.txt :124 

CHECK_CXX_COMPILER_FLAG("/arch:AVX2" HAVE_VISUAL_STUDIO_ARCH_AVX2)

google/snappy CMakeLists.txt :130 

endif(HAVE_VISUAL_STUDIO_ARCH_AVX2)