Uday Bondhugula 1e9bfcd9a4 [MLIR][Affine] Fix/complete access index invariance, add isInvariantAccess (#84602) ...

isAccessIndexInvariant had outdated code and didn't handle IR with
multiple
affine.apply ops, which is inconvenient when used as a utility.  This is
addressed by switching to use the proper API on AffineValueMap. Add
mlir::affine::isInvariantAccess exposed for outside use and tested via
the test pass. Add a method on AffineValueMap.  Add test cases to
exercise simplification and composition for invariant access analysis.

A TODO/FIXME has been added but this issue existed before.

2024-03-14 09:14:21 +05:30

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