[Bug middle-end/56770] Partial sums loop optimization

[dje at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56770



--- Comment #5 from David Edelsohn <dje at gcc dot gnu.org> 2013-03-29 19:53:44 
UTC ---

Segher pointed out that the transformed code example is has a bug.  The first

revised loop should test j+1 < NZ.



    for (j = 0; j+1 < NZ; j += 2){

        fValue += Q[j] / r[j];

        fValue1 += Q[j+1] / r[j+1];

    }