Re: Some questions about optimization and inline

From:

"Scot T Brennecke" <ScotB@MVPs.spamhater.org>

Newsgroups:

microsoft.public.vc.language

Date:

Sun, 11 Mar 2007 23:56:11 -0500

Message-ID:

<#tQdALGZHHA.1008@TK2MSFTNGP03.phx.gbl>

Optimization. If you simplify the function enough, or don't call it, it doesn't need to exist, so
it is excluded to reduce the size of the executable.

"telnet2008" <telnet2008@gmail.com> wrote in message news:enpfszFZHHA.2436@TK2MSFTNGP06.phx.gbl...

Hi,everyone:

the questionly code:
#include <iostream>

using namespace std;
class test
{
   int x;

void func()
       {

       };
void func1()
       {
  x = 1;
       };

public:
   void f()
       {
    printf("%x\n",&x);
           printf("%x\n",&test::func );
           printf("%x\n",&test::func1 );
       };
};

int main()
{
test a;
   a.f();
test * ap = &a;
void(test::*pmem)(void)=&test::f;
       printf("%x\n",pmem );
test b;
   b.f();
test * bp = &b;
   return 0;
}

if delete this 2 statements: printf("%x\n",&test::func );
                                 printf("%x\n",&test::func1 );
in vs2003-release,in export map file and disassemble output file(dumpbin),
cannot find the location of "func()"??"func1()".

if delete this 3 statements: test * ap = &a;

void(test::*pmem)(void)=&test::f;
                                             printf("%x\n",pmem );
                                             test b;
in vs2003-release,in export map file and disassemble output file, cannot
find the location of "f()".

why?

if I define test::f() out of the class test, like this:

class test
{
   int x;

void func()
       {

       };
void func1()
       {
  x = 1;
       };

public:
   void f();
};

void test::f()
       {
           printf("%x\n",&x);
           //printf("%x\n",&test::func );
           //printf("%x\n",&test::func1 );
       };

I also cannot find the location of "f()" in the output disassemble file
,why?