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[Bug c/35709] severe perfromance degradation with "float complex" type
- From: "sergstesh at yahoo dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 26 Mar 2008 20:58:13 -0000
- Subject: [Bug c/35709] severe perfromance degradation with "float complex" type
- References: <bug-35709-13529@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from sergstesh at yahoo dot com 2008-03-26 20:58 -------
(In reply to comment #5)
> As mentioned, use -fcx-limited-range.
>
Can't you add just _one_ command line switch: -old_behavior ?
Or -gcc_4_2_3_behavior ?
For example, I need FFTW3 with "float" rather than "double", and I need its
speed. I am not sure FFTW3 'configure' will add -fcx-limited-range.
Thanks in advance.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35709