------- Comment #12 from dberlin at gcc dot gnu dot org 2007-11-01 21:24 ------- Subject: Re: [4.3 Regression] Exponential time behavior in PRE
Yes, the heuristics can sometimes generate a very large number of copies to eliminate a single redundancy. This is jsut the way the standard PRE heuristics work. If you want to try to come up with a better one, you are welcome to :) On 1 Nov 2007 21:16:45 -0000, jakub at gcc dot gnu dot org <[EMAIL PROTECTED]> wrote: > > > ------- Comment #11 from jakub at gcc dot gnu dot org 2007-11-01 21:16 > ------- > This isn't just a compile time hog, but sometimes (see PR33922) it creates > many > times bigger and far slower code as well. > > > -- > > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32540 > > ------- You are receiving this mail because: ------- > You are on the CC list for the bug, or are watching someone who is. > -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32540
