------- Comment #6 from hubicka at gcc dot gnu dot org 2007-10-09 14:54 ------- It is little bit sick, but what about implying -mfpmath=sse when -ftree-vectorize is used and SSE is available?
The reason why we don't default to fpmath=sse is because the extra precision is told to be part of i386 ABI, with vectorization we are not going to maintain this "feature" anyway. I can easily imagine that many users will try -ftree-vectorize and forget about -mfpmath... Honza -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31897
