/jonesforth/perf_dupdrop.c
<< Back/* Ideal DUP DROP * 1000 assuming perfect inlining.
$Id: perf_dupdrop.c,v 1.1 2007-10-10 13:01:05 rich Exp $
*/
#include <stdio.h>
#include <stdlib.h>
#define DUP \
asm volatile ("mov (%%esp),%%eax\n" \
"\tpush %%eax" \
: : : "eax")
#define DROP \
asm volatile ("pop %%eax" \
: : : "eax")
#define DUPDROP DUP; DROP;
#define DUPDROP10 DUPDROP DUPDROP DUPDROP DUPDROP DUPDROP DUPDROP DUPDROP DUPDROP DUPDROP DUPDROP
#define DUPDROP100 DUPDROP10 DUPDROP10 DUPDROP10 DUPDROP10 DUPDROP10 DUPDROP10 DUPDROP10 DUPDROP10 DUPDROP10 DUPDROP10
#define DUPDROP1000 DUPDROP100 DUPDROP100 DUPDROP100 DUPDROP100 DUPDROP100 DUPDROP100 DUPDROP100 DUPDROP100 DUPDROP100 DUPDROP100
int
main (int argc, char *argv[])
{
unsigned long long start_time, end_time;
asm volatile ("rdtsc" : "=A" (start_time));
DUPDROP1000
asm volatile ("rdtsc" : "=A" (end_time));
printf ("%llu\n", end_time - start_time);
exit (0);
}