Matthias Springer ee7c474150 [mlir][affine][analysis][NFC] Simplify FlatAffineConstraints API ...

* Remove `reset` function. Use copy assignment directly (instead of within `reset`).
* Fix potential `nullptr` dereference in `getFlattenedAffineExprs`.
* Make constraint set optional in `checkMemrefAccessDependence`.

Differential Revision: https://reviews.llvm.org/D145935

2023-03-15 09:22:53 +01:00

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