[Bug c/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 #2 from bfriesen at simple dot dallas.tx.us 2012-07-14 20:56:55 UTC 
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Created attachment 27794
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27794
Sample portable source file