[ARITH] Enhance IterMapSimplify for symbolic #14547
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depends on #14538 |
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junrushao
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Very cool. Let's get it in!
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This PR should be good to go as #14571 has been merged |
This PR refactors and enhances DetectIterMap and IterMapSimplify to enable symbolic shape simplification. Specifically, we add a routine to combine multiple IterSplitExpr into one if they come from the same source. It is helpful to distinguish iterator from normal constants in the simplification process. IterMapSimplify takes advantage of these information. This improvements is helpful to simplify the indices in flattened buffer when there is symbolic shape involved and normal simplifier. Also updated FlattenBuffer to take benefit of the enhanced simplifier. Test cases are added.
ordering and simplifcations. Co-authored-by: Junru Shao <[email protected]>
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This PR refactors and enhances DetectIterMap and IterMapSimplify
to enable symbolic shape simplification. Specficially, we add
a routine to combine multiple IterSplitExpr into one if they
come from the same source.
It is helpful to distinguish iterator from normal constants
in the simplification process. IterMapSimplify takes advantage
of these information.
This improvements is helpful to simplify the indices in flattened buffer
when there is symbolic shape involved and normal simplifier.
Also updated FlattenBuffer to take benefit of the enhanced simplifier.
Test cases are added.