Currently, isConsecutiveAccess() detects two pointers(PtrA and PtrB) as consecutive by comparing PtrB with BaseDelta+PtrA. This works when both pointers are factorized or both of them are not factorized. But isConsecutiveAccess() fails if one of the pointers is factorized but the other one is not.
Here is an example:
PtrA = 4 * (A + B)
PtrB = 4 + 4A + 4B
This patch uses getMinusSCEV() to compute the distance between two pointers. getMinusSCEV() allows combining the expressions and computing the simplified distance.