[Bug tree-optimization/46590] [14/16 Regression] long compile time with -O2 and many loops

[tkoenig at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46590

Thomas Koenig <tkoenig at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|4.6.0                       |16.0
      Known to work|4.4.1                       |15.2.0
   Last reconfirmed|2010-11-22 13:13:03         |2025-12-15
            Version|4.6.0                       |14.3.1
            Summary|[14 Regression] long        |[14/16 Regression] long
                   |compile time with -O2 and   |compile time with -O2 and
                   |many loops                  |many loops

--- Comment #59 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Timing for gcc-8:

real    38m51.275s
user    37m49.899s
sys     1m1.319s

Timing for gcc-10:

real    42m20.489s
user    41m19.053s
sys     1m1.338s

Summing up (time in seconds)

Gcc-8   2331.26
Gcc-10  2540.48
Gcc-12  2490.37
Gcc-13  2459.99
Gcc-14  13530.79
Gcc-15  2268.68
Gcc-16  2520.38

So, a very large regression for gcc-14, and a small one for gcc-16 vs. gcc-15.