This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug target/53967] GCC produces slow code for convolution algorithm with -mfpmath=sse (the AMD_64 default)
- From: "bfriesen at simple dot dallas.tx.us" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 21 Jul 2012 01:04:55 +0000
- Subject: [Bug target/53967] GCC produces slow code for convolution algorithm with -mfpmath=sse (the AMD_64 default)
- Auto-submitted: auto-generated
- References: <bug-53967-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53967
--- Comment #17 from bfriesen at simple dot dallas.tx.us 2012-07-21 01:04:55 UTC ---
I discovered that GCC's __attribute__((__optimize__())) and optimization
pragmas do not work for OpenMP code because OpenMP uses a different function
name for the actual working code. This makes it much more painful to work
around this bug.