use Benchmark
;timethese (200, {
	'if_cond_then_statement'=> sub  {
		;my $ris=0
		;for my $i (0..100000) {
			if (int ($i/2)>7) { $ris+=1 }
		}
	}	
	,'statement_if_cond'=> sub  {
		;my $ris=0
		;for my $i (0..100000) {
			$ris+=1 if int ($i/7)>0			
		}
	}
})

Benchmark: timing 200 iterations of if_cond_then_statement, statement_if_cond...if_cond_then_statement: 61 wallclock secs (58.33 usr +  0.03 sys = 58.36 CPU) @
 3.43/s (n=200)
statement_if_cond: 60 wallclock secs (59.15 usr +  0.01 sys = 59.16 CPU) @  3.38/s (n=200)