[Bug tree-optimization/14741] graphite with loop blocking and interchanging doesn't optimize a matrix multiplication loop

[spop at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14741

--- Comment #23 from Sebastian Pop <spop at gcc dot gnu.org> ---
If possible, we need to maintain the subscripted version of arrays:
C(I,J)
A(I,K)
B(K,J)

Without a representation of multi dimensional arrays, we would need to
delinearize the arrays prior to graphite.