[Bug libstdc++/13351] [3.3 Regression] Generated code is noticeable slower (compared to 3.2)

[cline at parashift dot com]

------- Additional Comments From cline at parashift dot com  2003-12-08 13:00 -------
Subject: RE:  [3.3 Regression] Generated code is noticeable slower (compared to 3.2)

Actually you got pretty close to what I got.  Your numbers show a slow-down
of roughly 6x or 7x (the ns/per number is the significant one; the others
are merely used to compute that number).

Marshall


-----Original Message-----
From: giovannibajo at libero dot it [mailto:gcc-bugzilla@gcc.gnu.org] 
Sent: Monday, December 08, 2003 6:11 AM
To: cline@parashift.com
Subject: [Bug libstdc++/13351] [3.3 Regression] Generated code is noticeable
slower (compared to 3.2)



------- Additional Comments From giovannibajo at libero dot it  2003-12-08
12:10 -------
Under cygwin, I get a slowdown, but it's nowhere as significant as 10x:

$ g++-3.2.2 -O pr13351.cc && time ./a.exe
Testing: 9000000 in 1.032 sec = 0.114667 ns/per

real    0m1.120s
user    0m0.010s
sys     0m0.040s

$ g++-3.3.1 -O pr13351.cc && time ./a.exe
Testing: 2000000 in 1.509 sec = 0.7545 ns/per

real    0m1.776s
user    0m1.502s
sys     0m0.050s


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-12-08 12:10:42
               date|                            |
            Summary|[3.3 Regression] 10x slower |[3.3 Regression] Generated
                   |generated code (GCC 3.3     |code is noticeable slower
                   |compared with GCC 3.2)      |(compared to 3.2)


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13351

------- You are receiving this mail because: -------
You reported the bug, or are watching the reporter.




-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13351