Benjamin Redelings I <benjamin_redelings@xxxxxxxx> wrote on 02/12/2009 16:35:45: > Is there a good place on the wiki to add the > following information, to help newcomers get up to speed? > > * -ffast-math is required to vectorize dot products and other sums. We can add it here: http://gcc.gnu.org/projects/tree-ssa/vectorization.html. > * if the loop is optimized out, then there will be no report of its > vectorizability. > * (?) this is the ONLY reason that there would be no such report. > * if a function is inlined into another function, then its > vectorizability will be reported again, in that function. > * if all uses of a function are inlined, then there will be no > "vectorized n loops in function" message. > * functions are (of course) not analyzed by the vectorizer in the order > in which they are declared. These are true for all optimizations. Ira > > I guess this doesn't matter now, but here is the corrected file, for > reference. > > Thanks a lot! > > -BenRI > [attachment "m3s.c" deleted by Ira Rosen/Haifa/IBM]
