------- Comment #9 from dominiq at lps dot ens dot fr 2010-05-16 11:16 ------- > You cant' compare -fwhole-file numbers to -fwhole-program numbers. > -fwhole-file is a correctness option, w/o it the Frontend generates > an invalid representation for the middle-end.
Well, from what I saw running the polyhedron tests, -fwhole-file is more than a correctness option. I think it exposes more optimization opportunities to the middle end, giving faster executable for ac, aermod, and doduc. Note that adding -flto gives also some speed up for these tests. Due to this pr one cannot test the effect of -fwhole-program on half the tests. However using it for fatigue gives a quite large speed up I do not see for the seven other tests. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40873
