------- Additional Comments From rakdver at atrey dot karlin dot mff dot cuni dot cz 2005-01-25 00:49 ------- Subject: Re: [4.0 Regression] IV-OPTS is O(N^3)
> >>>> Uh, symbolic references are or will be used to do data dependence when > >>>> MEM_REF and ARRAY_REF couldn't be generated from the pointers. > >>> > >>> How? If the reference is left in symbolic form, it means that you know > >>> nothing about its value, > >> > >> Wrong. > >> > >> We could know things about it's value, such as ranges. We just don't know > >> an exact number. > > > > OK. This is work for VRP, not scev. > > And once we have it, we can talk about removing the symbolic stuff from > SCEV :) Once we use any value range info from SCEV, we can speak about leaving symbolic references in SCEV until we have a proper VRP :-) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18595
