[Bug optimization/6588] throw() takes 20,000 cycles : is it expected ?

[Bug optimization/6588] throw() takes 20,000 cycles : is it expected ?

[dhazeghi@yahoo.com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6588



------- Additional Comments From dhazeghi@yahoo.com  2003-05-25 04:17 -------
Hello,

I can confirm that this problem is still present on gcc 3.2, 3.3 branch and mainline (20030524). 
Takes ~18 seconds on a P-III 733MHZ...

Dara





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[Bug optimization/6588] throw() takes 20,000 cycles : is it expected ?

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6588


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |SUSPENDED


------- Additional Comments From pinskia at physics dot uc dot edu  2003-08-05 15:22 -------
Suspending this as the same reason for changing this to an enhancement.

[Bug other/6588] throw() takes 20,000 cycles : is it expected ?

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-01-13 21:23 -------
Hmm, this is one of the cases where we should be able optimize away really but the general case we 
can try to.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|rtl-optimization            |other
   Last reconfirmed|2004-02-08 05:35:11         |2005-01-13 21:23:12
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6588

[Bug other/6588] throw() takes 20,000 cycles : is it expected ?

[sylvain dot pion at sophia dot inria dot fr]

------- Comment #9 from sylvain dot pion at sophia dot inria dot fr  2009-04-09 10:06 -------
There seems to have been some progress : it now takes 6000-9000 cycles instead
of 20000.

This is 6000 with g++ 4.3.1 on a Fedora 10 x86_64 box, and 9000 on a MacBook
Pro with various g++ versions up to current mainline.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6588

[Bug other/6588] throw() takes 20,000 cycles : is it expected ?

[bangerth at gmail dot com]

------- Comment #8 from bangerth at gmail dot com  2009-04-08 23:10 -------
We're about 8 generations of gcc later now. Is this still true? Still
20,000 cycles?

W.


-- 

bangerth at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bangerth at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6588