test/MC/Disassembler/X86/lit.local.cfg - llvm - Git at Google

 config.suffixes = ['.txt']

 targets = set(config.root.targets_to_build.split())
 if not 'X86' in targets:
     config.unsupported = True
	config.suffixes = ['.txt']

	targets = set(config.root.targets_to_build.split())
	if not 'X86' in targets:
	config.unsupported = True