- int size = SrcSubscripts.size();
- int dstSize = DstSubscripts.size();
- if (size != dstSize || size < 2)
+ // Second step: find subscript sizes.
+ SmallVector<const SCEV *, 4> Sizes;
+ SE->findArrayDimensions(Terms, Sizes, ElementSize);
+
+ // Third step: compute the access functions for each subscript.
+ SmallVector<const SCEV *, 4> SrcSubscripts, DstSubscripts;
+ SrcAR->computeAccessFunctions(*SE, SrcSubscripts, Sizes);
+ DstAR->computeAccessFunctions(*SE, DstSubscripts, Sizes);
+
+ // Fail when there is only a subscript: that's a linearized access function.
+ if (SrcSubscripts.size() < 2 || DstSubscripts.size() < 2 ||
+ SrcSubscripts.size() != DstSubscripts.size())