------- Comment #17 from rguenther at suse dot de 2010-04-08 13:29 ------- Subject: Re: [4.4 Regression] A loop in tree_unroll_loops_completely never ends
On Thu, 8 Apr 2010, hubicka at ucw dot cz wrote: > ------- Comment #16 from hubicka at ucw dot cz 2010-04-08 13:26 ------- > Subject: Re: [4.4 Regression] A loop in > tree_unroll_loops_completely never ends > > > The main issue is that we are doing a very poor job in limiting the work > > we do during complete unrolling (as well as leaving as little work for > > subsequent passes as possible). > > Well, I guess in addition to number of instructions after optimizing we can > also estimate number of instruction we actually produce by unrolling and have > some cutoff (a lot bigger than for code size estimate growth) on those as > well... We do. But it all get's just smaller - but only after optimizing. Richard. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43186
