llvm-project/mlir/lib/Analysis/Presburger
Arjun P 33f574672f [MLIR] Redundancy detection for FlatAffineConstraints using Simplex
This patch adds the capability to perform constraint redundancy checks for `FlatAffineConstraints` using `Simplex`, via a new member function `FlatAffineConstraints::removeRedundantConstraints`. The pre-existing redundancy detection algorithm runs a full rational emptiness check for each inequality separately for checking redundancy. Leveraging the existing `Simplex` infrastructure, in this patch we have an algorithm for redundancy checks that can check each constraint by performing pivots on the tableau, which provides an alternative to running Fourier-Motzkin elimination for each constraint separately.

Differential Revision: https://reviews.llvm.org/D84935
2020-08-20 13:38:51 +05:30
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CMakeLists.txt
Matrix.cpp
Simplex.cpp [MLIR] Redundancy detection for FlatAffineConstraints using Simplex 2020-08-20 13:38:51 +05:30