[Bug target/53967] GCC produces slow code for convolution algorithm with -mfpmath=sse (the AMD_64 default)

[bfriesen at simple dot dallas.tx.us]

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.