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[Bug optimization/13712] Executable runs 25% slower than when compiled with INTEL compiler
- From: "falk at debian dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 29 Jan 2004 16:01:34 -0000
- Subject: [Bug optimization/13712] Executable runs 25% slower than when compiled with INTEL compiler
- References: <20040116211131.13712.william.crocker@analog.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From falk at debian dot org 2004-01-29 16:01 -------
Thanks for the test case. I see it's using FP math heavily. Could you also
try the options -ffast-math and -mfpmath=sse? AFAIK the Intel compiler does
the equivalent of these switches by default so they are needed for a fair
comparison.
--
What |Removed |Added
----------------------------------------------------------------------------
GCC build triplet|??? |
GCC host triplet|DELL, Pentium4, Linux RedHat|
|7.3 |
GCC target triplet|??? |i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13712