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Author SHA1 Message Date
Arjun P 9f32f1d6fb [MLIR] Support checking if two FlatAffineConstraints are equal 
This patch adds support for checking if two PresburgerSets are equal. In particular, one can check if two FlatAffineConstraints are equal by constructing PrebsurgerSets from them and comparing these.

Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D94915
 2021-01-18 21:46:01 +05:30
Arjun P 63dead2096 Introduce subtraction for FlatAffineConstraints 
Subtraction is a foundational arithmetic operation that is often used when computing, for example, data transfer sets or cache hits. Since the result of subtraction need not be a convex polytope, a new class `PresburgerSet` is introduced to represent unions of convex polytopes.

Reviewed By: ftynse, bondhugula

Differential Revision: https://reviews.llvm.org/D87068
 2020-10-07 17:31:06 +02:00