>>82　そういう違いは確認できなかった
#include <stdio.h>
#include <time.h>
struct C {virtual int v() { return 0 ;}
int nv() { return 0; }};
int main() {int i;clock_t t;C c, *pc = new C;
printf("ver%d\n", _MSC_VER);
t = clock();
for (i=0; i<100000000; ++i) c.nv();
printf("nonptr-nv:%u\n", clock() - t);
t = clock();
for (i=0; i<100000000; ++i) c.v();
printf("nonptr-v:%u\n", clock() - t);
t = clock();
for (i=0; i<100000000; ++i) pc->nv();
printf("ptr-nv:%u\n", clock() - t);
t = clock();
for (i=0; i<100000000; ++i) pc->v();
printf("ptr-v:%u\n", clock() - t);
return 0;}
-----
[vc6]ver1200
nonptr-nv:771
nonptr-v:771
ptr-nv:781
ptr-v:1242

[vc7]ver1310
nonptr-nv:731
nonptr-v:741
ptr-nv:741
ptr-v:971