use strict;
use constant FALSE 	=> 1==0;
use Benchmark qw(:all);

cmpthese(1E7, {
	'return;'		=>	sub { return 		},
	'return FALSE;'	=>	sub { return FALSE 	},
	'return 1==0;'	=>	sub { return 1==0 	},
	'implicit'		=>	sub { 				},
	'implicit FALSE'=>	sub { FALSE 		},
	'implicit 1==0'	=>	sub { 1==0 			},
});