Uday Bondhugula 6e3462d251 Fix b/122139732; update FlatAffineConstraints::isEmpty() to eliminate IDs in a ... better order. - update isEmpty() to eliminate IDs in a better order. Speed improvement for complex cases (for eg. high-d reshape's involving mod's/div's). - minor efficiency update to projectOut (was earlier making an extra albeit benign call to gaussianEliminateIds) (NFC). - move getBestIdToEliminate further up in the file (NFC). - add the failing test case. - add debug info to checkMemRefAccessDependence. PiperOrigin-RevId: 227244634		2019-03-29 14:47:13 -07:00
mlir	Fix b/122139732; update FlatAffineConstraints::isEmpty() to eliminate IDs in a	2019-03-29 14:47:13 -07:00