Huge compilation time of template based sources (AIX 5.2, VA C++ 6 compiler)

[vitalyt]

Hi,
I have cpp file which consist nested templates. Compilation time
without optimization is 1-2 minutes, with -O2 turned on more then 5
hours. Could anybody help with that problem?
AIX 5.2, Visual Age C++ 6 compiler

#include <pair>
using namespace std;
// value
typedef
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
int

>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>

internal_value;

 

[Victor Bazarov]

I have cpp file which consist nested templates. Compilation time
without optimization is 1-2 minutes, with -O2 turned on more then 5
hours. Could anybody help with that problem?
AIX 5.2, Visual Age C++ 6 compiler

[..nested templates..]

Have you tried contacting their Technical Support?

V

 

[vitalyt]

of course

 

[Victor Bazarov]

of course

yes

 

[Default User]

of course

Really?



Brian

 

[Peter Jansson]

of course

So, what did their Technical Support tell you about this?

Regards,
Peter Jansson

 

[Fei Liu]

Hi,
I have cpp file which consist nested templates. Compilation time
without optimization is 1-2 minutes, with -O2 turned on more then 5
hours. Could anybody help with that problem?
AIX 5.2, Visual Age C++ 6 compiler

#include <pair>
using namespace std;
// value
typedef
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
<
int,
int
internal_value;

what do you use this ugly beast for?

 

[Bill Baka]

what do you use this ugly beast for?

Too bad you can't compile on a DOS machine with huge ram drives. I have
tried things, not quite this big, but the old stuff sure beats the new
Windows junk. Even Linuxis getting a lot of bloat. I miss the good old
days but not the slow computers with only 16 MB of memory.
Bill Baka

 

[Jeff Flinn]

Hi,
I have cpp file which consist nested templates. Compilation time
without optimization is 1-2 minutes, with -O2 turned on more then 5
hours. Could anybody help with that problem?
AIX 5.2, Visual Age C++ 6 compiler

#include <pair>
using namespace std;
// value
typedef
std:air
<
int,
std:air
<
int,
std:air
<
int,
std:air
< ....
internal_value;

You might swith to boost::tuple or std::tri::tuple for such a beast, or even
look at boost::mpl for alternatives that have been architected with compile
efficiency in mind.

Jeff Flinn