[Bug c++/42194] performance degradation with STL complex convolution operation

2011-09-23 Thread paolo.carlini at oracle dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42194 Paolo Carlini changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|

[Bug c++/42194] performance degradation with STL complex convolution operation

2010-01-09 Thread jagjeet dot nain at gmail dot com
--- Comment #3 from jagjeet dot nain at gmail dot com 2010-01-10 05:54 --- Got the speedup improvement with fcx-limited-range flag. but got into another problem. This particular code when run on Sunx4100 server(with OpenSuse 10.1) shows unusual behavior. Different runs have different ru

[Bug c++/42194] performance degradation with STL complex convolution operation

2009-11-30 Thread jagjeet dot nain at gmail dot com
--- Comment #2 from jagjeet dot nain at gmail dot com 2009-11-30 09:57 --- Will -fcx-limited-range or -fcx-fortran-rules change the results compared to compiled with 4.0.2 without these flags ? Or in otherwords, A complex division program compiled with and without -fcx-limited-range fl

[Bug c++/42194] performance degradation with STL complex convolution operation

2009-11-27 Thread rguenth at gcc dot gnu dot org
--- Comment #1 from rguenth at gcc dot gnu dot org 2009-11-27 15:02 --- This is because with GCC 4.3 we properly implement complex arithmetic. Use -fcx-fortran-rules or -fcx-limited-range for speed. -- rguenth at gcc dot gnu dot org changed: What|Removed