yosys_pass(flatten
  flatten.cc
)
yosys_pass(hierarchy
	hierarchy.cc
	LIBRARIES
		verific
	REQUIRES
		read_rtlil
		read_verilog
)
yosys_pass(keep_hierarchy
	keep_hierarchy.cc
)
yosys_pass(submod
	submod.cc
	REQUIRES
		opt_clean
)
yosys_pass(uniquify
	uniquify.cc
)