MultiSource/UnitTests/Float/CMakeLists.txt - third_party/llvm-test-suite - Git at Google

 # Tests in Rounding can run only if the target implements builtin functions for
 # manipulation of rounding mode.
 set(SUPPORTED_ARCHS x86 AArch64)
 if(ARCH IN_LIST SUPPORTED_ARCHS)
   add_subdirectory(rounding)
 endif()
	# Tests in Rounding can run only if the target implements builtin functions for
	# manipulation of rounding mode.
	set(SUPPORTED_ARCHS x86 AArch64)
	if(ARCH IN_LIST SUPPORTED_ARCHS)
	add_subdirectory(rounding)
	endif()